34934 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

DEPARTMENT OF ENERGY 

10 CFR Parts 429 and 430 

[EERE–2020–BT–TP–0029] 

RIN 1904–AF03 

Energy Conservation Program: Test 

Procedure for Portable Air 

Conditioners 

AGENCY: Office of Energy Efficiency and 

Renewable Energy, Department of 

Energy. 

ACTION: Notice of proposed rulemaking 

and request for comment. 

SUMMARY: The U.S. Department of 

Energy (‘‘DOE’’) proposes to amend the 

test procedure for portable air 

conditioners (‘‘portable ACs’’) to 

incorporate a measure of variable-speed 

portable AC performance and make 

minor clarifying edits. DOE also 

proposes a new test procedure to 

improve representativeness for all 

configurations of portable ACs, which 

relies on a substantively different 

measure of cooling capacity and energy 

consumption compared to the current 

portable AC test procedure. DOE is 

seeking comment from interested parties 

on the proposal. 

DATES: 

Comments: DOE will accept 

comments, data, and information 

regarding this proposal no later than 

August 8, 2022. See section V, ‘‘Public 

Participation,’’ for details. 

Meeting: DOE will hold a webinar on 

Wednesday, July 13, 2022, from 1:00 

p.m. to 4:00 p.m. See section V, ‘‘Public 

Participation,’’ for webinar registration 

information, participant instructions, 

and information about the capabilities 

available to webinar participants. 

ADDRESSES: Interested persons are 

encouraged to submit comments using 

the Federal eRulemaking Portal at 

www.regulations.gov. Follow the 

instructions for submitting comments. 

Alternatively, interested persons may 

submit comments, identified by docket 

number EERE–2020–BT–TP–0029, by 

any of the following methods: 

1. Federal eRulemaking Portal: 

www.regulations.gov. Follow the 

instructions for submitting comments. 

2. Email: PortableAC2020TP0029@

ee.doe.gov. Include the docket number 

EERE–2020–BT–TP–0029 in the subject 

line of the message. 

3. Postal Mail: Appliance and 

Equipment Standards Program, U.S. 

Department of Energy, Building 

Technologies Office, Mailstop EE–5B, 

1000 Independence Avenue SW, 

Washington, DC 20585–0121. 

Telephone: (202) 287–1445. If possible, 

please submit all items on a compact 

disc (‘‘CD’’), in which case it is not 

necessary to include printed copies. 

4. Hand Delivery/Courier: Appliance 

and Equipment Standards Program, U.S. 

Department of Energy, Building 

Technologies Office, 950 L’Enfant Plaza 

SW, 6th Floor, Washington, DC, 20024. 

Telephone: (202) 287–1445. If possible, 

please submit all items on a CD, in 

which case it is not necessary to include 

printed copies. 

No telefacsimiles (‘‘faxes’’) will be 

accepted. For detailed instructions on 

submitting comments and additional 

information on this process, see section 

V of this document. 

Docket: The docket, which includes 

Federal Register notices, public meeting 

attendee lists and transcripts (if a public 

meeting is held), comments, and other 

supporting documents/materials, is 

available for review at 

www.regulations.gov. All documents in 

the docket are listed in the 

www.regulations.gov index. However, 

some documents listed in the index, 

such as those containing information 

that is exempt from public disclosure, 

may not be publicly available. 

The docket web page can be found at 

www.regulations.gov/docket/EERE2020-BT-TP-0029. The docket web page 

contains instructions on how to access 

all documents, including public 

comments, in the docket. See section V 

for information on how to submit 

comments through 

www.regulations.gov. 

FOR FURTHER INFORMATION CONTACT: 

Mr. Lucas Adin, U.S. Department of 

Energy, Office of Energy Efficiency and 

Renewable Energy, Building 

Technologies Office, EE–5B, 1000 

Independence Avenue SW, Washington, 

DC 20585–0121. Telephone: (202) 287– 

5904. Email 

ApplianceStandardsQuestions@

ee.doe.gov. 

Ms. Sarah Butler, U.S. Department of 

Energy, Office of the General Counsel, 

GC–33, 1000 Independence Avenue SW, 

Washington, DC 20585–0121. 

Telephone: (202) 586–1777. Email: 

Sarah.Butler@hq.doe.gov. 

For further information on how to 

submit a comment, review other public 

comments and the docket, or participate 

in a public meeting, contact the 

Appliance and Equipment Standards 

Program staff at (202) 287–1445 or by 

email: ApplianceStandardsQuestions@

ee.doe.gov. 

SUPPLEMENTARY INFORMATION: DOE 

proposes to incorporate by reference the 

following draft industry standard into 

part 430: 

Association of Home Appliance 

Manufacturers (‘‘AHAM’’) PAC–1–2022 

Draft, (‘‘AHAM PAC–1–2022 Draft’’), 

‘‘Portable Air Conditioners’’. AHAM 

PAC–1–2022 Draft is in draft form and 

its text was provided to the Department 

for the purposes of review only during 

the drafting of this NOPR. DOE intends 

to update the reference to the final 

published version of AHAM PAC–1– 

2022 Draft in the Final Rule, unless 

there are substantive changes between 

the draft and published versions, in 

which case DOE may adopt the 

substance of the AHAM PAC–1–2022 

Draft or provide additional opportunity 

for comment on the changes to the 

industry consensus test procedure. 

A copy of AHAM PAC–1–2022 Draft 

is attached in this docket for review. 

DOE proposes to maintain and update 

the previously approved incorporations 

by reference for the following industry 

standards in part 430: 

ANSI/ASHRAE Standard 37–2009, 

(‘‘ASHRAE 37–2009’’), Methods of 

Testing for Rating Electrically Driven 

Unitary Air-Conditioning and Heat 

Pump Equipment, ANSI approved June 

25, 2009. 

IEC 62301 (‘‘IEC 62301’’), Household 

electrical appliances—Measurement of 

standby power, (Edition 2.0, 2011–01). 

DOE proposes to incorporate by 

reference the following industry 

standards into part 430: 

ANSI/ASHRAE 51–1999/ANSI/ 

AMCA 210–99 (‘‘ANSI/ASHRAE 51’’), 

Laboratory Methods of Testing Fans for 

Certified Aerodynamic Performance 

Rating, ANSI approved December 2, 

1999; ASHRAE approved June 23, 1999. 

ANSI/ASHRAE 41.1–1986 

(Reaffirmed 2006), Standard Method for 

Temperature Measurement, approved 

February 18, 1987. 

ANSI/ASHRAE Standard 41.6–1994 

(RA 2006), (‘‘ASHRAE 41.6–1994’’), 

Standard Method for Measurement of 

Moist Air Properties, ANSI reaffirmed 

on January 27, 2006. 

Copies of ANSI/ASHRAE Standard 

51–1999, ANSI/ASHRAE Standard 

41.1–1986, and ANSI/ASHRAE 

Standard 41.6–1994 can be obtained 

from the American National Standards 

Institute at https://webstore.ansi.org/. 

For a further discussion of these 

standards see section IV.M of this 

document. 

Table of Contents 

I. Authority and Background 

A. Authority 

B. Background 

II. Synopsis of the Notice of Proposed 

Rulemaking 

III. Discussion 

A. Scope of Applicability 


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1All references to EPCA in this document refer 

to the statute as amended through the Energy Act 

of 2020, Public Law 116–260 (Dec. 27, 2020), which 

reflect the last statutory amendments that impact 

Parts A and A–1 of EPCA. 

2For editorial reasons, upon codification in the 

U.S. Code, Part B was redesignated Part A. 

3 IEC 62301, Household electrical appliances— 

Measurement of standby power (Edition 2.0, 2011– 

01). 

4 IEC 62087, Methods of measurement for the 

power consumption of audio, video, and related 

equipment (Edition 3.0, 2011–04). 

B. Test Procedure 

1. Updates to Industry Standards 

2. Harmonization With Other AC Product 

Test Procedures 

3. Variable-Speed Technology 

4. Representative Average Period of Use 

5. Cooling Mode 

6. Heating Mode 

7. Air Circulation Mode 

8. Dehumidification Mode 

9. Network Connectivity 

10. Infiltration Air, Duct Heat Transfer, and 

Case Heat Transfer 

C. Representations of Energy Efficiency 

D. Test Procedure Costs and 

Harmonization 

1. Test Procedure Costs and Impact 

2. Harmonization With Industry Standards 

E. Compliance Date and Waivers 

IV. Procedural Issues and Regulatory Review 

A. Review Under Executive Order 12866 

and 13563 

B. Review Under the Regulatory Flexibility 

Act 

C. Review Under the Paperwork Reduction 

Act of 1995 

D. Review Under the National 

Environmental Policy Act of 1969 

E. Review Under Executive Order 13132 

F. Review Under Executive Order 12988 

G. Review Under the Unfunded Mandates 

Reform Act of 1995 

H. Review Under the Treasury and General 

Government Appropriations Act, 1999 

I. Review Under Executive Order 12630 

J. Review Under Treasury and General 

Government Appropriations Act, 2001 

K. Review Under Executive Order 13211 

L. Review Under Section 32 of the Federal 

Energy Administration Act of 1974 

M. Description of Materials Incorporated 

by Reference 

V. Public Participation 

A. Participation in the Webinar 

B. Procedure for Submitting Prepared 

General Statements for Distribution 

C. Conduct of the Webinar 

D. Submission of Comments 

E. Issues on Which DOE Seeks Comment 

VI. Approval of the Office of the Secretary 

I. Authority and Background 

DOE’s test procedures for portable 

ACs are currently prescribed at title 10 

of the Code of Federal Regulations 

(‘‘CFR’’), part 430, subpart B appendix 

CC (‘‘appendix CC’’). The DOE test 

procedure measures portable AC 

efficiency in terms of a combined energy 

efficiency ratio (‘‘CEER’’), which is the 

ratio of the amount of cooling provided 

by the portable AC to the amount of 

power it consumes to provide that 

cooling. The current portable AC test 

procedure calculates this using a 

weighted average of performance at two 

different test conditions. The following 

sections discuss DOE’s authority to 

establish test procedures for portable 

ACs and relevant background 

information regarding DOE’s 

consideration of test procedures for this 

product. 

A. Authority 

The Energy Policy and Conservation 

Act, as amended (‘‘EPCA’’),1 authorizes 

DOE to regulate the energy efficiency of 

a number of consumer products and 

certain industrial equipment. (42 U.S.C. 

6291–6317) Title III, Part B 2 of EPCA 

established the Energy Conservation 

Program for Consumer Products Other 

Than Automobiles, which sets forth a 

variety of provisions designed to 

improve energy efficiency. In addition 

to specifying a list of covered products, 

EPCA enables the Secretary of Energy to 

classify additional types of consumer 

products as covered products under 

EPCA. (42 U.S.C. 6292(a)(20)) In a final 

determination of coverage published in 

the Federal Register on April 18, 2016, 

DOE classified portable ACs as covered 

products under EPCA. 81 FR 22514. 

The energy conservation program 

under EPCA consists essentially of four 

parts: (1) testing, (2) labeling, (3) Federal 

energy conservation standards, and (4) 

certification and enforcement 

procedures. Relevant provisions of 

EPCA specifically include definitions 

(42 U.S.C. 6291), test procedures (42 

U.S.C. 6293), labeling provisions (42 

U.S.C. 6294), energy conservation 

standards (42 U.S.C. 6295), and the 

authority to require information and 

reports from manufacturers (42 U.S.C. 

6296). 

The Federal testing requirements 

consist of test procedures that 

manufacturers of covered products must 

use as the basis for: (1) certifying to DOE 

that their products comply with the 

applicable energy conservation 

standards adopted pursuant to EPCA (42 

U.S.C. 6295(s)), and (2) making 

representations about the efficiency of 

those consumer products (42 U.S.C. 

6293(c)). Similarly, DOE must use these 

test procedures to determine whether 

the products comply with relevant 

standards promulgated under EPCA. (42 

U.S.C. 6295(s)) 

Federal energy efficiency 

requirements for covered products 

established under EPCA generally 

supersede State laws and regulations 

concerning energy conservation testing, 

labeling, and standards. (42 U.S.C. 6297) 

DOE may, however, grant waivers of 

Federal preemption for particular State 

laws or regulations, in accordance with 

the procedures and other provisions of 

EPCA. (42 U.S.C. 6297(d)) 

Under 42 U.S.C. 6293, EPCA sets forth 

the criteria and procedures DOE must 

follow when prescribing or amending 

test procedures for covered products. 

EPCA requires that any test procedures 

prescribed or amended under this 

section be reasonably designed to 

produce test results which measure 

energy efficiency, energy use or 

estimated annual operating cost of a 

covered product during a representative 

average use cycle or period of use and 

not be unduly burdensome to conduct. 

(42 U.S.C. 6293(b)(3)) 

In addition, EPCA requires that DOE 

amend its test procedures for all covered 

products to integrate measures of 

standby mode and off mode energy 

consumption. (42 U.S.C. 6295(gg)(2)(A)) 

Standby mode and off mode energy 

consumption must be incorporated into 

the overall energy efficiency, energy 

consumption, or other energy descriptor 

for each covered product unless the 

current test procedures already account 

for and incorporate standby and off 

mode energy consumption or such 

integration is technically infeasible. If 

an integrated test procedure is 

technically infeasible, DOE must 

prescribe a separate standby mode and 

off mode energy use test procedure for 

the covered product, if technically 

feasible. (42 U.S.C. 6295(gg)(2)(A)(ii)) 

Any such amendment must consider the 

most current versions of the 

International Electrotechnical 

Commission (‘‘IEC’’) Standard 62301 3

and IEC Standard 62087 4 as applicable. 

(42 U.S.C. 6295(gg)(2)(A)) 

EPCA also requires that, at least once 

every 7 years, DOE evaluate test 

procedures for each type of covered 

product, including portable ACs, to 

determine whether amended test 

procedures would more accurately or 

fully comply with the requirements for 

the test procedures to not be unduly 

burdensome to conduct and be 

reasonably designed to produce test 

results that reflect energy efficiency, 

energy use, and estimated operating 

costs during a representative average 

use cycle or period of use. (42 U.S.C. 

6293(b)(1)(A)) 

If the Secretary determines, on her 

own behalf or in response to a petition 

by any interested person, that a test 

procedure should be prescribed or 

amended, the Secretary shall promptly 

publish in the Federal Register 

proposed test procedures and afford 

interested persons an opportunity to 


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5The parenthetical reference provides a reference 

for information located in the docket of DOE’s 

rulemaking to develop test procedures for portable 

ACs. (Docket No. EERE–2020–BT–TP0029, which is 

maintained at www.regulations.gov). The references 

are arranged as follows: (commenter name, 

comment docket ID number, page of that 

document). 

present oral and written data, views, 

and arguments with respect to such 

procedures. The comment period on a 

proposed rule to amend a test procedure 

shall be at least 60 days and may not 

exceed 270 days. In prescribing or 

amending a test procedure, the 

Secretary shall take into account such 

information as the Secretary determines 

relevant to such procedure, including 

technological developments relating to 

energy use or energy efficiency of the 

type (or class) of covered products 

involved. (42 U.S.C. 6293(b)(2)) If DOE 

determines that test procedure revisions 

are not appropriate, DOE must publish 

its determination not to amend the test 

procedures. DOE is publishing this 

notice of proposed rulemaking 

(‘‘NOPR’’) in satisfaction of the 7-year 

review requirement specified in EPCA. 

(42 U.S.C. 6293(b)(1)(A)) 

B. Background 

As stated, DOE’s existing test 

procedures for portable ACs appear at 

appendix CC. DOE established the test 

procedure for portable ACs on June 1, 

2016 (‘‘June 2016 Final Rule’’), to ensure 

it is representative of typical use and to 

improve accuracy and repeatability 

without undue test burden. 81 FR 

35241. The June 2016 Final Rule 

established provisions for measuring the 

energy consumption of single-duct and 

dual-duct portable ACs in active, 

standby, and off modes. The June 2016 

Final Rule also established provisions 

for certification, compliance, and 

enforcement for portable ACs in 10 CFR 

part 429. 

On June 2, 2020, DOE published a 

Decision and Order granting a waiver to 

LG Electronics USA, Inc. (‘‘LG’’) for 

basic models of single-duct variablespeed portable ACs to account for 

variable-speed portable AC performance 

under multiple outdoor temperature 

operating conditions, thus yielding 

more representative results. 85 FR 

33643 (Case No. 2018–004, ‘‘LG 

Waiver’’). 

On November 5, 2020, DOE published 

in the Federal Register an early 

assessment review request for 

information (‘‘RFI’’) (‘‘November 2020 

RFI’’) in which it sought data and 

information pertinent to whether 

amended test procedures would (1) 

more accurately or fully comply with 

the requirement that the test procedure 

produces results that measure energy 

use during a representative average use 

cycle or period of use for the product 

without being unduly burdensome to 

conduct, or (2) reduce testing burden. 85 

FR 70508. 

On April 6, 2021, DOE published a 

notice of interim waiver for GD Midea 

Air Conditioning Equipment Co. LTD. 

(‘‘Midea’’), which issued a similar 

alternate test procedure to that from the 

LG Waiver with additional 

specifications to accommodate the 

combined-duct configurations of the 

specified Midea basic models. 86 FR 

17803 (Case No. 2020–006, ‘‘Midea 

Interim Waiver’’). 

On April 16, 2021, DOE published in 

the Federal Register an RFI (‘‘April 

2021 RFI’’) seeking data and information 

regarding issues pertinent to whether 

amended test procedures would more 

accurately or fully comply with the 

requirement that the test procedure 

produces results that measure energy 

use during a representative average use 

cycle or period of use for the product 

without being unduly burdensome to 

conduct, or reduce testing burden. In 

the April 2021 RFI, DOE requested 

comments, information, and data about 

a number of issues, including (1) 

updates to industry test standards, (2) 

test harmonization, (3) energy use 

measurements, (4) representative 

average period of use, (5) test burden, 6) 

heat transfer measurements and 

calculations, (7) heating mode, fan-only 

mode, and dehumidification mode, (8) 

network connectivity, (9) part-load 

performance and load-based testing, (10) 

spot coolers, and (11) test procedure 

waivers. 86 FR 20044. 

DOE received comments in response 

to the April 2021 RFI from the 

interested parties listed in Table I.1. 

TABLE I.1—WRITTEN COMMENTS RECEIVED IN RESPONSE TO APRIL 2021 RFI 

Commenter(s) Reference in this NOPR Commenter type 

Association of Home Appliance Manufacturers ...................................... AHAM ............................................ Trade Association. 

Keith Rice ................................................................................................ Rice ................................................ Individual. 

Northwest Energy Efficiency Alliance ..................................................... NEEA ............................................. Efficiency Organization. 

Appliance Standards Awareness Project, Consumer Federation of 

America, Natural Resources Defense Council.

Joint Commenters ......................... Efficiency Organizations. 

Pacific Gas and Electric Company, Southern California Gas Company, 

Southern California Edison, and San Diego Gas and Electric Company (collectively, the California Investor-Owned Utilities).

California IOUs .............................. Utility. 

A parenthetical reference at the end of 

a comment quotation or paraphrase 

provides the location of the item in the 

public record.5

A list of additional abbreviations and 

acronyms for terms defined in this 

document are provided in Table I.2. 

TABLE I.1—LIST OF ABBREVIATIONS AND ACRONYMS

Abbreviation/acronym Term in this NOPR 

AC .............................................................. Air conditioner. 

ACC ........................................................... Adjusted cooling capacity. 

AEC ............................................................ Annual energy consumption. 

AEER ......................................................... Annualized energy efficiency ratio. 

AHRI .......................................................... Air-Conditioning, Heating, and Refrigeration Institute. 

ANSI ........................................................... American National Standard Institute. 

ASHRAE .................................................... American Society of Heating, Refrigerating and Air-Conditioning Engineers. 

Btu/h ........................................................... British thermal units per hour. 


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TABLE I.1—LIST OF ABBREVIATIONS AND ACRONYMS—Continued 

Abbreviation/acronym Term in this NOPR 

Btu/h-ft2-°F ................................................. British thermal units per hour-square foot-degree Fahrenheit. 

Btu/Wh ....................................................... British thermal units per watt-hour. 

CBI ............................................................. Confidential business information. 

Cd .............................................................. Cooling degradation coefficient. 

CEER ......................................................... Combined energy efficiency ratio. 

CF .............................................................. Cycling factor. 

CFR ............................................................ Code of Federal Regulations. 

COVID–19 .................................................. Coronavirus 2019. 

DOE ........................................................... U.S. Department of Energy. 

°F ............................................................... Degrees Fahrenheit. 

E.O. ............................................................ Executive order. 

EPCA ......................................................... Energy Policy and Conservation Act. 

FEAA .......................................................... Federal Energy Administration Authorization Act of 1977. 

FTC ............................................................ Federal Trade Commission. 

IEC ............................................................. International Electrotechnical Commission. 

IRFA ........................................................... Initial regulatory flexibility analysis. 

ISO ............................................................. International Organization for Standardization. 

kWh ............................................................ Kilowatt-hours. 

LBNL .......................................................... Lawrence Berkeley National Laboratory. 

MAEDbS .................................................... Modernized Appliance Efficiency Database System. 

NAFTA ....................................................... North American Free Trade Agreement. 

NAICS ........................................................ North American Industry Classification System. 

NOPR ......................................................... Notice of proposed rulemaking. 

OEM ........................................................... Original equipment manufacturer. 

OIRA .......................................................... Office of Information and Regulatory Affairs. 

OMB ........................................................... Office of Management and Budget. 

PAF ............................................................ Performance adjustment factor. 

RECS ......................................................... Residential Energy Consumption Survey. 

RFI ............................................................. Request for information. 

SACC ......................................................... Seasonally adjusted cooling capacity. 

SBA ............................................................ Small Business Administration. 

UMRA ........................................................ Unfunded Mandates Reform Act of 1995. 

USMCA ...................................................... Agreement between the United States of America, the United Mexican States, and Canada 

II. Synopsis of the Notice of Proposed 

Rulemaking 

In this NOPR, DOE proposes to (1) 

amend 10 CFR 429.4 ‘‘Materials 

incorporated by reference’’ and 10 CFR 

429.62, ‘‘Portable air conditioners;’’ (2) 

update 10 CFR 430.2, ‘‘Definitions’’ and 

10 CFR 430.23, ‘‘Test procedures for the 

measurement of energy and water 

consumption’’ to address combinedduct portable ACs; (3) amend appendix 

CC, ‘‘10 CFR Appendix CC to Subpart B 

of Part 430—Uniform Test Method for 

Measuring the Energy Consumption of 

Portable Air Conditioners;’’ and (4) 

adopt a new appendix CC1, ‘‘appendix 

CC1 to subpart B of part 430—Uniform 

Test Method for Measuring the Energy 

Consumption of Portable Air 

Conditioners,’’ as summarized in Tables 

II.1 through II.4 of this document, 

respectively. 

In this NOPR, DOE proposes to amend 

10 CFR 429.4 ‘‘Materials incorporated 

by reference’’ and 10 CFR 429.62, 

‘‘Portable air conditioners’’ as follows: 

(1) Incorporate by reference AHAM 

PAC–1–2022 Draft, ‘‘Portable Air 

Conditioners’’ (‘‘AHAM PAC–1–2022 

Draft’’) which includes an industryaccepted method for testing variablespeed portable ACs, in 10 CFR 429.4; 

and 

(2) Add rounding instructions for the 

seasonally adjusted cooling capacity 

(‘‘SACC’’) and annualized energy 

efficiency ratio (‘‘AEER’’) in 10 CFR 

429.62; 

DOE’s proposed actions in 10 CFR 

429.4 and 429.62 are summarized in 

Table II.1 compared to the current 10 

CFR 429.4 and 429.62, as well as the 

reason for the proposed change. 

TABLE II.1—SUMMARY OF CHANGES IN PROPOSED 10 CFR 429.4 AND 429.62 RELATIVE TO CURRENT 10 CFR 429.4 

AND 429.62 

Current 10 CFR 429.4 and 429.62 Proposed 10 CFR 429.4 and 429.62 Attribution 

10 CFR 429.4 incorporates by reference American National Standard Institute (‘‘ANSI’’)/ 

AHAM PAC–1–2015.

Adds incorporation by reference in 10 CFR 

429.4 of AHAM PAC–1–2022 Draft.

Updated industry test procedure. 

10 CFR 429.62 requires rounding based on 

AHAM PAC–1–2015.

Adds to 10 CFR 429.62 rounding instructions 

for SACC and AEER when using appendix 

CC1.

To increase the reproducibility of the test procedure. 

In this NOPR, DOE also proposes to 

update 10 CFR 430.2, ‘‘Definitions’’ and 

10 CFR 430.23, ‘‘Test procedures for the 

measurement of energy and water 

consumption’’ as follows: 

(1) Add a definition for the term 

‘‘combined-duct’’ to 10 CFR 430.2; and 

(2) Add requirements to determine 

estimated annual operating cost for 

single-duct and dual-duct variablespeed portable ACs in 10 CFR 430.23. 


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DOE’s proposed actions in 10 CFR 

430.2 and 430.23 are summarized in 

Table II.2 compared to the current 10 

CFR 430.2 and 430.23, as well as the 

reason for the proposed change. 

TABLE II.2—SUMMARY OF CHANGES IN PROPOSED 10 CFR 430.2 AND 430.23 RELATIVE TO CURRENT 10 CFR 430.2 

AND 430.23 

Current 10 CFR 430.2 and 430.23 Proposed 10 CFR 430.2 and 430.23 Attribution 

10 CFR 430.2 does not define combined-duct portable ACs.Adds a definition to 10 CFR 430.2 for combinedduct pertaining to portable ACs.Test procedure waiver. 

10 CFR 430.23 does not have a method to estimate 

annual operating cost for single-duct and dual-duct 

variable-speed portable ACs.

Adds a method to 10 CFR 430.23 to estimate annual operating cost for single-duct and dual-duct 

variable-speed portable ACs.

Test procedure waiver. 

In this NOPR, DOE also proposes to 

amend appendix CC to subpart B of part 

430—Uniform Test Method for 

Measuring the Energy Consumption of 

Portable Air Conditioners’’ as follows: 

(1) Add definitions in section 2 for 

‘‘combined-duct,’’ ‘‘single-speed,’’ 

‘‘variable-speed,’’ ‘‘full compressor 

speed (full),’’ ‘‘low compressor speed 

(low),’’ and ‘‘theoretical comparable 

single-speed;’’ 

(2) Divide section 4.1 into two 

sections, 4.1.1 and 4.1.2, for singlespeed and variable-speed portable ACs, 

respectively, and detail configurationspecific cooling mode testing 

requirements for variable-speed portable 

ACs; 

(3) Add a requirement in section 4.1.2 

that, for variable-speed portable ACs, 

the full compressor speed at the 95 

degree Fahrenheit (‘‘°F’’) test condition 

be achieved with user controls, and the 

low compressor speed at the 83 °F test 

condition be achieved with 

manufacturer-provided settings or 

controls; 

(4) Add a cycling factor (‘‘CF’’) in 

section 5.5.1; 

(5) Add a requirement to calculate 

SACC with full compressor speed at the 

95 °F test condition and low compressor 

speed at the 83 °F test condition in 

sections 5.1 and 5.2, consistent with the 

LG waiver and Midea interim waiver, 

with an additional requirement for 

variable-speed portable ACs to represent 

SACC with full compressor speed for 

both test conditions (‘‘SACCFull’’), and; 

(6) Add a requirement in section 3.1.2 

that, if a portable AC has network 

functions, all network functions must be 

disabled throughout testing if such 

settings can be disabled by the end-user 

and the product’s user manual provides 

instructions on how to do so. If the 

network functions cannot be disabled by 

the end-user, or the product’s user 

manual does not provide instruction for 

disabling network settings, test the unit 

with the network settings in the factory 

default configuration for the duration of 

the test. 

DOE’s proposed actions in appendix 

CC are summarized in Table II.3 

compared to the current appendix CC, 

as well as the reason for the proposed 

change. 

TABLE II.3—SUMMARY OF CHANGES IN PROPOSED APPENDIX CC TO CURRENT APPENDIX CC 

Current appendix CC Proposed appendix CC Attribution 

Does not specify compressor type or include variable-speed portable ACs.Adds definitions for single-speed and variable-speed 

pertaining to portable ACs and additional compressor speed definitions.

Test procedure waiver. 

Specifies cooling mode requirements and subsequent calculations for single-speed portable ACs.Adds cooling mode requirements and subsequent 

calculations for variable-speed portable ACs.

Test procedure waiver. 

Does not specify requirements to achieve compressor speeds.Adds a requirement that the full compressor speed 

at the 95 °F test condition be achieved with user 

controls and the low compressor speed at the 83 

°F test condition be achieved with manufacturer 

settings.

Test procedure waiver. 

Does not include a CF ................................................ Adds a CF to determine a theoretical single-speed 

portable AC cooling capacity.

Test procedure waiver. 

Calculates SACC for single-speed portable ACs ....... Adds equations to calculate SACC for variablespeed portable ACs. Requires that the full compressor speed be used to determine capacity at 

the 95 °F test and the low compressor speed be 

used to determine capacity at the 83 °F test condition. Requires additional representation of new 

metric, SACCFull, using the full compressor speed 

at the 83 °F test condition.

Test procedure waiver and ensure 

comparability between singlespeed and variable-speed capacity ratings. 

Does not specify address portable ACs with network 

functions.

Adds a requirement that, if a portable AC has network functions, all network functions must be disabled throughout testing.To ensure reproducibility of the 

test procedure. 

In this NOPR, DOE additionally 

proposes to adopt a new ‘‘appendix CC1 

to subpart B of part 430—Uniform Test 

Method for Measuring the Energy 

Consumption of Portable Air 

Conditioners’’ which would: 

(1) Incorporate by reference parts of 

AHAM PAC–1–2022 Draft, which 

includes an industry-accepted method 

for testing variable-speed portable ACs; 

(2) Adopt a new efficiency metric, 

AEER, to calculate more 

representatively the efficiency of both 


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variable-speed and single-speed 

portable ACs; 

(3) Amend the annual operating 

hours; 

(4) Update the SACC and CEER 

equations for both single-speed and 

variable-speed portable ACs; 

(5) Apply a CF to single-speed 

portable AC efficiency; and 

(6) Add a requirement that, if a 

portable AC has network functions, all 

network functions must be disabled 

throughout testing. If the network 

functions cannot be disabled by the enduser, or the product’s user manual does 

not provide instruction for disabling 

network settings, then test the unit with 

the network function settings in the 

factory default configuration for the 

duration of the test. 

Key aspects of DOE’s proposed new 

appendix CC1 are described in Table 

II.4 compared to the current appendix 

CC, as well as the reason for the 

proposed new appendix CC1. 

TABLE II.4—SUMMARY OF PROPOSED NEW APPENDIX CC1 TO CURRENT APPENDIX CC 

Current appendix CC Proposed new appendix CC1 Attribution 

Incorporates by reference ANSI/AHAM PAC–1–2015 Incorporates by reference AHAM PAC–1–2022 Draft Updated industry test procedure.

Specifies cooling mode requirements and subsequent calculations for single-speed portable ACs.Adds cooling mode requirements, operating hours, 

and a new efficiency metric.

To improve representativeness of 

the test procedure. 

Calculates SACC and CEER for single-speed portable ACs.Adds equations to calculate SACC and CEER for 

variable-speed portable ACs and updates the 

SACC and CEER equations for single-speed portable ACs.

To improve representativeness of 

the test procedure. 

Does not include a CF ................................................ Applies a CF to single-speed portable AC efficiency To improve representativeness of 

the test procedure. 

Does not specify address portable ACs with network 

functions.

Adds a requirement that, if a portable AC has network functions, all network functions must be disabled throughout testing.To ensure reproducibility of the 

test procedure. 

Under 42 U.S.C. 6293(e)(1), DOE is 

required to determine whether an 

amended test procedure will alter the 

measured energy use of any covered 

product. If an amended test procedure 

does alter measured energy use, DOE is 

required to make a corresponding 

adjustment to the applicable energy 

conservation standard to ensure that 

minimally compliant covered products 

remain compliant. (42 U.S.C. 6293(e)(2)) 

DOE has tentatively determined that the 

proposed amendments described in 

section III of this NOPR would not alter 

the measured efficiency of single-speed 

portable ACs that are rated using the test 

procedure that is currently required for 

testing, i.e., appendix CC. DOE has also 

tentatively determined that the 

proposed amendments to appendix CC 

described in section III and Table II.2 of 

this NOPR, if made final, could alter the 

measured efficiency and capacity of 

variable-speed portable ACs that are 

currently subject to waivers. Appendix 

CC does not currently have separate 

provisions for variable-speed portable 

ACs. DOE is proposing to establish a test 

method for such units that would 

address the ability of variable-speed 

compressors to adjust their operating 

speed based on the demand load of the 

conditioned space. Although the 

measured efficiency could change for 

variable-speed portable ACs that are 

currently subject to waivers, DOE has 

tentatively determined that this 

proposal would not require an 

adjustment to the energy conservation 

standard for portable ACs to ensure that 

minimally compliant portable ACs 

would remain compliant. DOE reached 

this conclusion because variable-speed 

portable ACs currently on the market 

are not representative of minimally 

compliant units. 

DOE also has tentatively determined 

that the proposed adoption of a new 

appendix CC1 described in section III 

and Table II.3 of this NOPR would alter 

the measured efficiency of portable ACs. 

DOE proposes that testing according to 

the proposed new appendix CC1, if 

made final, would not be required until 

compliance is required with amended 

energy conservation standards that are 

based on the proposed new appendix 

CC1, should such standards be 

established. Additionally, DOE has 

tentatively determined that the 

proposed amendments, if made final, 

would not increase the cost of testing. 

Discussion of DOE’s proposed actions 

are addressed in detail in section III of 

this NOPR. 

III. Discussion 

A. Scope of Applicability 

DOE defines a ‘‘portable air 

conditioner’’ as a portable encased 

assembly, other than a packaged 

terminal air conditioner, room air 

conditioner, or dehumidifier, that 

delivers cooled, conditioned air to an 

enclosed space, and is powered by 

single-phase electric current. 10 CFR 

430.2. The definition also states that a 

portable AC includes a source of 

refrigeration and may include additional 

means for air circulation and heating. 

Id. 

DOE has established definitions for 

two portable AC configurations: ‘‘singleduct portable air conditioner’’ and 

‘‘dual-duct portable air conditioner.’’ A 

‘‘single-duct portable air conditioner’’ is 

a portable AC that draws all of the 

condenser inlet air from the conditioned 

space without the means of a duct, and 

discharges the condenser outlet air 

outside the conditioned space through a 

single duct attached to an adjustable 

window bracket. 10 CFR 430.2. A ‘‘dualduct portable air conditioner’’ is a 

portable AC that draws some or all of 

the condenser inlet air from outside the 

conditioned space through a duct 

attached to an adjustable window 

bracket, may draw additional condenser 

inlet air from the conditioned space, 

and discharges the condenser outlet air 

outside the conditioned space by means 

of a separate duct attached to an 

adjustable window bracket. Id. 

In the April 2021 RFI, DOE sought 

comment on whether the current 

definitions of ‘‘portable air 

conditioner,’’ ‘‘single-duct portable air 

conditioner,’’ and ‘‘dual-duct portable 

air conditioner’’ require amendment, 

and if so, how the terms should be 

defined. 86 FR 20044, 20046 (Apr. 17, 

2021). DOE specifically requested 

comment on whether the existing 

definitions specified in 10 CFR 430.2 for 

portable ACs require amendments to 

distinguish further between single-duct 

and dual-duct units, or to address any 

unique configurations that are not 

clearly addressed in the existing 

definitions; if amendments were 

recommended, DOE sought information 

on what identifying characteristics may 

be included in potential amended or 

new definitions. 


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DOE received no comments related to 

the definitions in response to the April 

2021 RFI. In the Midea Interim Waiver, 

DOE specified a definition for 

‘‘combined-duct portable air 

conditioner’’ as part of the alternate test 

procedure. 86 FR 17803, 17808. Since 

this duct configuration was not 

previously defined, DOE proposes to 

define ‘‘combined-duct’’ in 10 CFR 

430.2 specifically as ‘‘for a portable air 

conditioner, the condenser inlet and 

outlet air streams flow through separate 

ducts housed in a single duct structure.’’ 

DOE is not proposing amendments to 

the definitions for ‘‘portable air 

conditioner,’’ ‘‘single-duct portable air 

conditioner,’’ and ‘‘dual-duct portable 

air conditioner’’ as codified in 10 CFR 

430.2, at this time. DOE requests 

comment on the proposed definition of 

‘‘combined duct.’’ 

In the April 2021 RFI, DOE also 

discussed a comment received in which 

NEEA stated that ‘‘spot coolers’’ are not 

currently covered by the portable AC 

test procedure, and that these products 

do not provide net cooling, but rather 

move heat from one area to another in 

a space (i.e., they reject condenser air to 

the cooled space). 86 FR 20044, 20051. 

NEEA stated that some portable AC 

products may meet this description of a 

spot cooler, and recommended that DOE 

continue to monitor the market to 

ensure that market characterization of a 

product as a ‘‘spot cooler’’ is not 

utilized as a means to circumvent 

portable AC standards. Id. In response, 

DOE sought information regarding the 

availability of any portable ACs that 

provide cooling in a similar manner to 

single-duct and dual-duct portable ACs 

but that do not meet either of the 

definitions for a single-duct or dual-duct 

portable AC at 10 CFR 430.2. Id. 

DOE received no comments providing 

additional information regarding spot 

coolers. In the 2016 Final Rule, DOE 

identified the presence of an adjustable 

window mounting bracket as a primary 

feature of single-duct and dual-duct 

portable ACs. 81 FR 35245 (Jun. 1, 

2016). In that final rule and in 

subsequent market reviews, DOE found 

no spot coolers with an adjustable 

window mounting bracket. These 

flexible mounting brackets for 

condenser inlet and exhaust ducts are 

required for the portable AC 

configurations addressed by the portable 

AC test procedure. Therefore, in this 

NOPR, DOE is not proposing any 

amendments to the scope or definitions 

related to spot coolers. 

B. Test Procedure 

Portable ACs are currently tested in 

accordance with appendix CC, which 

incorporates by reference American 

National Standard Institute (‘‘ANSI’’)/ 

AHAM PAC–1–2015 ‘‘Portable Air 

Conditioners’’ (‘‘ANSI/AHAM PAC–1– 

2015’’), ANSI/American Society of 

Heating, Refrigerating and AirConditioning Engineers (‘‘ASHRAE’’) 

Standard 37–2009 ‘‘Methods of Testing 

for Rating Electrically Driven Unitary 

Air-Conditioning and Heat Pump 

Equipment’’ (‘‘ANSI/ASHRAE Standard 

37–2009’’), and IEC Standard 62301 

‘‘Household electrical appliances— 

Measurement of standby power’’ 

(Edition 2.0 2011–01) (‘‘IEC Standard 

62301’’), with modifications. Regarding 

dual-duct portable ACs, the DOE test 

procedure specifies provisions in 

addition to ANSI/AHAM PAC–1–2015. 

Specifically, the DOE test procedure 

specifies an additional test condition for 

dual-duct portable ACs (83 °F dry-bulb 

and 67.5 °F wet-bulb outdoor 

temperature) and additionally accounts 

for duct heat transfer, infiltration air 

heat transfer, and off-cycle mode energy 

use. See Sections 4.1, 4.1.1, 4.1.2, and 

4.2 of appendix CC. Appendix CC also 

includes instructions regarding tested 

configurations, duct setup, inlet test 

conditions, condensate removal, unit 

placement, duct temperature 

measurements, and control settings. See 

Sections 3.1.1, 3.1.1.1, 3.1.1.2, 3.1.1.3, 

3.1.1.4, 3.1.1.6, and 3.1.2 of appendix 

CC. 

Under the current test procedure, a 

unit’s SACC, in British thermal units 

per hour (‘‘Btu/h’’), is calculated as a 

weighted average of the adjusted cooling 

capacity measured at two representative 

operating conditions. The adjusted 

cooling capacity is the measured indoor 

room cooling capacity while operating 

in cooling mode under the specified test 

conditions, adjusted based on the 

measured and calculated duct and 

infiltration air heat transfer. See 

Sections 4.1, 4.1.1, 4.1.2, 5.1, and 5.2 of 

appendix CC. The CEER represents the 

efficiency of the unit, in Btu per watthours (‘‘Btu/Wh’’), based on the 

adjusted cooling capacity at the two 

operating conditions; the annual energy 

consumption in cooling mode, off-cycle 

mode, and inactive or off mode; and the 

number of cooling mode hours per year; 

with weighting factors applied for the 

two operating conditions. See Sections 

4.2, 4.3, 5.3, and 5.4 of appendix CC. 

In response to the April 2021 RFI, 

DOE received a comment from AHAM 

stating that there is no immediate need 

to amend the portable AC test 

procedure, given the backlog of other 

overdue rules and the fact that the 

applicable energy conservation 

standards compliance date is not until 

2025. In addition, AHAM stated that it 

does not believe the existing test 

procedure needs to be revised other 

than to make updates to incorporate the 

existing waivers. AHAM recommended 

collaborating with AHAM and other 

stakeholders on this test procedure 

through the consensus process so that 

the rulemaking process can be 

streamlined. (AHAM, No. 8 at p. 2) DOE 

notes that, at the time of the comment, 

AHAM and its working group were still 

working on an update to AHAM PAC– 

1–2015. 

As stated, DOE is conducting this 

rulemaking in accordance with the 

periodic review provision in EPCA that 

requires ‘‘at least once every 7 years, the 

Secretary shall review test procedures 

for all covered products including 

portable ACs and (i) amend test 

procedures with respect to any covered 

product, if the Secretary determines that 

amended test procedures would more 

accurately or fully comply with the 

requirements of paragraph (3); or (ii) 

publish notice in the Federal Register of 

any determination not to amend a test 

procedure.’’ (42 U.S.C. 6293, (b)(1)(A)) 

In addition, DOE’s regulations at 10 CFR 

430.27(l) require that as soon as 

practicable after the granting of any 

waiver, DOE will publish in the Federal 

Register a NOPR to amend its 

regulations so as to eliminate any need 

for the continuation of such waiver. As 

soon thereafter as practicable, DOE will 

publish in the Federal Register a final 

rule. 10 CFR 430.27(l). 

AHAM further commented that, as 

DOE evaluates potential changes, it 

should be mindful that it will take time 

before many new features, designs, and 

technologies lend themselves to a 

‘‘representative average’’ consumer use. 

AHAM therefore stated that DOE should 

ensure that the portable AC test 

procedure does not prematurely address 

new designs which may not yet have an 

average use or be in common use by 

measuring their energy use, asserting 

that doing so could stifle innovation. 

(AHAM, No. 8 at p. 4) 

DOE notes an important distinction 

between the requirements of EPCA and 

AHAM’s comment regarding 

‘‘representative average’’ consumer use 

as measured by the test procedure. 

AHAM’s comment suggests that testing 

new features, designs, or technologies is 

not necessary because, according to 

AHAM, such features may not yet be in 

common use on the market. However, 

under EPCA, DOE is not required to 

develop a test procedure for the 

‘‘average’’ portable AC on the market. 

Instead, DOE is required to develop a 

test procedure that measures energy use 

or efficiency for all models of portable 

ACs during a representative average use 


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6Section 8(c) of appendix A of 10 CFR part 430 

subpart C, The Procedures, Interpretations, and 

Policies for Consideration in New or Revised 

Energy Conservation Standards and Test Procedures 

for Consumer Products and Commercial/Industrial 

Equipment (‘‘appendix A’’) provides guidelines on 

the adoption of industry test methods as DOE test 

procedures for covered products and equipment. 

DOE updated appendix A in a final rule published 

in the Federal Register on December 13, 2021. 86 

FR 70892. The updates included allowance for the 

adoption of industry test methods with 

modifications or the use of test methods crafted by 

DOE as necessary to ensure compatibility with the 

relevant statutory requirements, as well as DOE’s 

compliance, certification, and enforcement 

requirements. 

cycle or period of use (among other 

considerations). (42 U.S.C. 6293(b)(3)) 

1. Updates to Industry Standards 

In the November 2020 RFI, DOE 

sought comment on the availability of 

industry-accepted consensus-based test 

procedures for measuring the energy use 

of portable ACs that could be adopted 

without modification and more 

accurately or fully comply with the 

requirement that the test procedure 

produces results that measure energy 

use during a representative average use 

cycle for the product, and not be unduly 

burdensome to conduct. 85 FR 70508, 

70511. 

AHAM stated that the existing test 

procedure need not be significantly 

revised, and that the primary changes 

necessary are those that incorporate the 

LG Waiver and Midea Interim Waiver. 

AHAM commented that its PAC–1 task 

force is discussing broader issues for 

potential consideration and will add the 

issues raised in the April 2021 RFI to 

that discussion. AHAM stated that the 

PAC–1 task force is actively pursuing an 

update to ANSI/AHAM PAC–1–2015 

that would account for variable-speed 

products and is discussing some of the 

issues DOE raised in the April 2021 RFI, 

such as definitions, usage data, 

repeatability and reproducibility, test 

burden, infiltration air and duct heat 

transfer, variable-speed product testing, 

and spot coolers. AHAM further stated 

that this test procedure development is 

on a fast track and urged DOE to allow 

the process to complete before taking 

additional rulemaking steps and, so long 

as the test procedure is consistent with 

the EPCA requirements, as they expect 

it will be, to adopt the resulting 

procedure per the Process Rule, section 

8(c).6 AHAM stated it will update the 

docket when the procedure is complete. 

(AHAM, No. 8 at pp. 1–2) 

A new draft version of ANSI/AHAM 

PAC–1 has begun development since 

the publication of the current DOE test 

procedure; i.e., AHAM PAC–1–2022 

Draft. DOE assessed this draft version to 

determine if any updates to the DOE test 

procedure were warranted. As discussed 

in later sections in this NOPR, DOE is 

proposing to adopt AHAM PAC–1–2022 

Draft in a new appendix CC1, including 

a new efficiency metric, AEER, and a 

capacity metric, SACC, that is 

comparable for both single-speed and 

variable-speed models. If AHAM 

publishes a final version of PAC–1–2022 

Draft prior to DOE publishing a final 

rule, DOE intends to update the 

referenced industry test standard in the 

DOE test procedure to reference the 

latest version of AHAM PAC–1. If a 

finalized version of AHAM PAC–1–2022 

Draft is not published before the final 

rule or if there are substantive changes 

between the draft and published 

versions of AHAM PAC–1–2022, DOE 

may adopt the substance of the AHAM 

PAC–1–2022 Draft or provide additional 

opportunity for comment on the final 

version of that industry consensus 

standard. Due to the substantive 

difference in measures of capacity and 

energy efficiency, DOE proposes to 

continue referencing ANSI/AHAM 

PAC–1–2015 in appendix CC, with 

amendments to include the variablespeed waiver approaches as discussed 

below. Until appendix CC1 takes effect, 

DOE proposes to add to appendix CC a 

capacity metric for variable-speed 

models, SACCFull, that is comparable to 

SACC for single-speed models. 

Both ANSI/AHAM PAC–1–2015 and 

AHAM PAC–1–2022 Draft reference 

ANSI/ASHRAE Standard 37–2009, 

which references certain industry test 

standards in specifying test conditions, 

measurements, and setup. DOE is also 

proposing to incorporate those industry 

standards specified in the relevant 

sections of ANSI/ASHRAE Standard 37– 

2009. Specifically, DOE is proposing to 

incorporate by reference ANSI/ASHRAE 

Standard 51–1999 (also referred to as 

ANSI/AMCA 210–1999), as referenced 

in section 6.2, ‘‘Nozzle Airflow 

Measuring Apparatus,’’ of ANSI/AHAM 

PAC–1–2015 and AHAM PAC–1–2022 

Draft, for static pressure tap placement. 

DOE is also proposing to incorporate by 

reference ANSI/ASHRAE Standard 

41.1–1986 and ANSI/ASRHAE Standard 

41.6–1994 (RA 2006), as referenced in 

section 5.1, ‘‘Temperature Measuring 

Instruments,’’ of AHAM PAC–1–2022 

Draft, for measuring dry-bulb 

temperature and humidity, respectively. 

Incorporating these standards will 

clarify which versions of the standards 

are required to conduct tests according 

to the procedure in appendices CC and 

CC1. 

Appendix CC Proposal: DOE is not 

proposing any amendments to revise the 

ANSI/AHAM PAC–1–2015 reference in 

appendix CC. DOE proposes to amend 

appendix CC to account for the 

difference in efficiency resulting from 

the ability of variable-speed models to 

adjust their compressor operating speed 

based on the demand load of the 

conditioned space, as addressed in the 

LG waiver and Midea interim waiver. 

DOE is also proposing to incorporate by 

reference ANSI/ASHRAE Standard 51– 

1999. This proposal would otherwise 

generally maintain the existing test 

procedure approach, which is the basis 

for the energy conservation standards 

for which compliance is required 

beginning in 2025, established in the 

energy conservation standards final rule 

published by DOE on January 10, 2020 

(‘‘January 2020 Final Rule’’). 85 FR 

1378. 

DOE requests comment on the 

proposal to incorporate by reference 

ANSI/ASHRAE Standard 51–1999 in 

appendix CC, with modifications to 

address comparability and 

representativeness. 

Appendix CC1 Proposal: DOE 

proposes to adopt a new appendix CC1 

that would incorporate by reference 

AHAM PAC–1–2022 Draft, with some 

modifications as discussed in section 

III.B.5 of this document. DOE is also 

proposing to incorporate those industry 

standards specified in the relevant 

sections of ANSI/ASHRAE Standard 37– 

2009. Specifically, DOE is proposing to 

incorporate by reference: ANSI/ 

ASHRAE Standard 41.1–1986, ANSI/ 

ASRHAE Standard 41.6–1994 (RA 

2006), ANSI/ASHRAE Standard 51– 

1999. The newly proposed appendix 

CC1 would simplify the portable AC test 

procedure for variable-speed portable 

ACs and improve representativeness 

and comparability among different 

portable AC configurations. 

DOE requests comment on the 

proposal to incorporate by reference 

AHAM PAC–1–2022 Draft in a new 

appendix CC1, with modifications to 

address comparability and 

representativeness and to incorporate 

ANSI/ASHRAE Standard 41.1–1986, 

ANSI/ASRHAE Standard 41.6–1994 (RA 

2006), ANSI/ASHRAE Standard 51– 

1999 in appendix CC1. 

2. Harmonization With Other AC 

Product Test Procedures 

In the April 2021 RFI, DOE requested 

further information and usage data 

regarding setpoints, operating 

conditions, seasonal use, and 

installation time for portable ACs to 

inform the issue of harmonization of the 

test procedures for room ACs, portable 

ACs, and central ACs. 86 FR 20044, 

20047. 

NEEA stated that portable ACs and 

room ACs are potential substitutes for 


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7 ISO 5151: 2017 specifies performance testing, 

the standard conditions, and the test methods for 

determining the capacity and efficiency ratings of 

air-cooling air conditioners and air-to-air heat 

pumps. 

8The Midea Petition for Waiver from Portable Air 

Conditioners Test Procedures (EERE–2020–BT– 

WAV–0023) is available at www.regulations.gov/ 

docket/EERE–2020–BT–WAV–0023. 

one another and may be evaluated sideby-side by consumers, but that more 

data are needed to fully understand the 

usage characteristics and applications of 

each product category. NEEA expressed 

particular concern that, under the 

current test procedures for each 

product, portable ACs may appear more 

efficient in comparison to room ACs, 

whereas, as asserted by NEEA, the 

opposite is generally the case. NEEA 

recommended that DOE further evaluate 

the typical applications and operational 

hours for both portable ACs and room 

ACs and update the test procedures as 

necessary to ensure that consumers are 

provided with accurate information. 

(NEEA, No. 12 at p. 2) 

The California IOUs commented that 

DOE should align the portable AC test 

procedure with that of room ACs and 

central ACs to provide consumers with 

a direct energy performance comparison 

between products that provide similar 

utility. The California IOUs noted that 

the International Organization for 

Standardization (‘‘ISO’’) states that ‘‘the 

operational mode and features of such 

appliances [single duct portable ACs 

and heat pumps] are quite different from 

those of the well-known non-ducted 

ACs and heat pumps largely diffused 

worldwide and covered by ISO 5151.’’ 7

The California IOUs stated that 

considering how portable, room, and 

central AC test procedures have evolved 

over time and how they have been 

evaluated globally, they understand 

why DOE is unable to harmonize these 

test procedures. They noted, however, 

that the DOE room AC and portable AC 

energy conservation standards are both 

based on a metric named CEER. They 

encouraged DOE to consider changing 

the name of the reported energy 

efficiency metric for portable ACs to 

clarify to consumers that the portable 

AC and room AC metrics are not 

comparable. (California IOUs, No. 10 at 

pp. 2–4) 

DOE recognizes that consumers may 

consider portable ACs and room ACs for 

the same applications, and that it would 

be helpful to consumers for the portable 

AC and room AC ratings to be 

comparable. However, as discussed in a 

NOPR published on February 25, 2015, 

DOE also expects that portable ACs and 

room ACs have different operating 

hours and are likely utilized differently 

by consumers. 80 FR 10211, 10235. 

Accordingly, the portable AC and room 

AC test procedures have different 

operating hours and test conditions, and 

the resulting CEER metric for each test 

procedure measures the efficiency of the 

tested product during its representative 

period of use. In this NOPR, DOE is not 

proposing specific amendments to 

appendix CC or the proposed new 

appendix CC1 for the purpose of 

achieving harmonization with the test 

procedures for other AC products. 

Rather, DOE is proposing amendments 

in this rulemaking to address and 

improve the representativeness of the 

test procedure for portable ACs, as 

required by EPCA. (See 42 U.S.C. 

6293(b)(3)) In the future, DOE will 

continue to consider EPCA 

requirements and consumer usage data 

when amending both the portable AC 

and room AC test procedures. With 

respect to changing the name of the 

metric, DOE is proposing a new metric 

name for portable ACs, as discussed in 

section III.B.5.f of this document. 

3. Variable-Speed Technology 

Portable ACs with variable-speed 

compressors have been introduced to 

the market since the last portable AC 

test procedure rulemaking. As compared 

to a portable AC with a single-speed 

compressor, a variable-speed portable 

AC can use an inverter-driven variablespeed compressor to maintain the 

desired temperature without cycling the 

compressor motor and fans on and off. 

The unit responds to surrounding 

conditions by adjusting the compressor 

rotational speed based on the cooling 

demand. At reduced speeds, variablespeed compressors typically operate 

more efficiently than a single-speed 

compressor would under the same 

conditions. The current portable AC test 

procedure does not account for 

improved efficiency from the ability of 

variable-speed portable ACs to 

automatically adjust their compressor 

operating speed and overall 

performance based on the cooling load 

of the conditioned space. 

DOE has issued a test procedure 

waiver and an interim waiver that 

specify alternate test procedures for 

certain basic models of variable-speed 

portable ACs. 85 FR 33643; 86 FR 

17803. 

As discussed, DOE granted LG a test 

procedure waiver from specified 

portions of the DOE test procedure for 

determining the energy efficiency of 

listed portable AC basic models, under 

which LG is required to test and rate the 

listed basic models of its portable ACs 

in accordance with the alternate test 

procedure specified in the Decision and 

Order. 85 FR 33643, 33647 (June 2, 

2020). LG asserted that the current DOE 

test procedure for single-duct portable 

ACs does not take into account the 

specific performance and efficiency 

benefits associated with the specified 

basic models, which are single-duct 

variable-speed portable ACs, under partload conditions. Id. In granting the LG 

Waiver, DOE determined that the 

alternate test procedure in the Decision 

and Order produces efficiency results 

for variable-speed portable ACs which 

are comparable with the results for 

single-speed units. Id. The alternate test 

procedure accomplishes this by 

adjusting the efficiency rating of the 

variable-speed portable AC by the 

amount the variable-speed unit would 

outperform a theoretical comparable 

single-speed unit in a representative 

period of use. Id. 

On July 16, 2020, DOE received a 

petition for waiver and application for 

interim waiver from Midea, consistent 

with the approach used for variablespeed compressors in the LG Waiver, 

with modifications to account for dualduct models incorporating Midea’s 

combined-duct technology.8 Midea 

stated the current test procedure 

prevents the testing of its combinedduct technology because the condenser 

inlet and outlet air streams are 

incorporated into the same structure. 

(Midea Petition, EERE–2020–BT–WAV– 

0023 No. 2 at pp. 4–5) Midea further 

stated that, since the airflow both into 

and out of the condenser must be 

measured simultaneously, modifications 

are needed to adapt Midea’s combinedduct technology to DOE’s test procedure 

and standard airflow measurement 

apparatuses. (Midea Petition, EERE– 

2020–BT–WAV–0023 No. 2 at p. 5) 

Midea stated the DOE test procedure 

does not take into account a specially 

designed adapter that is needed for 

measuring the airflows. Id. DOE granted 

the Midea Interim Waiver on April 6, 

2021, under which Midea is required to 

test and rate the listed basic models of 

its portable ACs in accordance with the 

alternate test procedure specified in the 

interim waiver. This alternate test 

procedure adjusts the efficiency rating 

of Midea’s variable-speed portable ACs 

in a manner similar to that of the 

alternate test procedure in the LG 

Waiver, with provisions to allow testing 

of the combined-duct technology. 86 FR 

17803. 

Upon the compliance date of the test 

procedure provisions proposed in this 

NOPR to appendix CC, should they be 

adopted, the LG Waiver and Midea 

Interim Waiver would be terminated, as 

the proposed amendments to appendix 


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CC address the issues addressed by the 

waiver and interim waiver. 10 CFR 

430.27(h)(3). 

In the April 2021 RFI, DOE requested 

comment on potential amendments to 

the test procedure to address variablespeed portable ACs. 86 FR 20044. 

NEEA, the California IOUs, and the 

Joint Commenters noted that variablespeed portable ACs have become 

available on the market since the 

January 2020 Final Rule, pointing to the 

LG Waiver and Midea Interim Waiver as 

evidence of variable-speed portable AC 

market prevalence. (NEEA, No. 12 at p. 

2; California IOUs, No. 10 at pp. 1–2; 

Joint Commenters, No. 9 at p. 2) The 

California IOUs further stated that these 

models are growing in popularity, citing 

prevalence on retail websites of one of 

the portable ACs that is subject to a 

waiver. (California IOUs, No. 10 at pp. 

1–2) The California IOUs recommended 

that DOE update the portable AC test 

procedure to establish a uniform 

approach for accurately representing the 

energy performance benefits of variablespeed technology to provide consumers 

with the best information so they can 

make informed purchasing decisions. 

(California IOUs, No. 10 at pp. 1–2) 

NEEA recommended that DOE modify 

the portable AC test procedure to 

include variable-speed products in a 

way that accurately reflects their energy 

use and that testing be conducted at 

user-selected speeds to the maximum 

extent possible, as compared to 

proprietary manufacturer settings, to 

better reflect field performance. NEEA 

further stated that, given the potential 

for variable-speed products to save 

energy through increased efficiency at 

low loads and reduced cycling, it is 

important to capture this energy use 

accurately in the test procedure so that 

it can be evaluated in future standards 

rulemakings. (NEEA, No. 12 at p. 2) The 

California IOUs noted that amending the 

test procedure to account for variablespeed technology would allow DOE to 

remove the existing test procedure 

waivers, stating that amending the test 

procedure would make the waivers no 

longer necessary for an accurate 

representation of the products in 

question. (California IOUs, No. 10 at pp. 

1–2) In incorporating the current test 

procedure waivers for variable-speed 

portable ACs into the DOE test 

procedure, the Joint Commenters and 

the California IOUs encouraged DOE to 

require that the ‘‘full speed’’ test be 

conducted using user controls to 

achieve the maximum cooling capacity 

to improve representativeness. (Joint 

Commenters, No. 9 at p. 2; California 

IOUs, No. 10 at pp. 1–2) 

As noted, DOE has issued a waiver 

and an interim waiver addressing the 

ability of variable-speed portable ACs to 

automatically adjust their compressor 

operating speed based on the cooling 

load of the conditioned space. Pursuant 

to DOE’s waiver regulations, as soon as 

practicable after the granting of any 

waiver, DOE will publish in the Federal 

Register a NOPR to amend its 

regulations to eliminate any need for the 

continuation of such waiver. 10 CFR 

430.27(l). As soon thereafter as 

practicable, DOE will publish in the 

Federal Register a final rule. Id. 

In accordance with the requirements 

of 10 CFR 430.27(l), DOE is proposing 

to amend appendix CC to adopt test 

methods and SACC and CEER 

calculations for variable-speed units, 

consistent with those in the LG and 

Midea Waivers. These test methods 

involve testing variable-speed portable 

ACs at three conditions: the two test 

conditions used for single-speed units 

and one additional low-compressorspeed test condition conducted at 83 °F. 

The low compressor speed would be 

achieved and maintained using 

instructions provided by the 

manufacturer as supplemental test 

information. 

Additionally, DOE is proposing 

changes to ensure comparability of 

metrics. Under the current appendix CC, 

SACC captures the reduced capacity at 

low outdoor temperature (83 °F) for 

variable-speed units but not for singlespeed units, because the procedure does 

not allow single-speed units to cycle, as 

they would in normal operation. Under 

the proposed appendix CC, the 

represented value of both variable-speed 

and single-speed unit capacities at the 

low temperature would be based on full 

speed, with a new SACCFull metric for 

variable-speed units. Although it does 

not reflect normal operation, this 

approach creates a fair comparison and 

does not affect the current metric for 

single-speed units. Under appendix 

CC1, SACC would reflect the reduced 

capacity at low outdoor temperature for 

both types. 

DOE proposes to require variablespeed portable AC manufacturers to 

make capacity representations with a 

new capacity metric, SACCFull, while 

appendix CC is used. As described in 

the following detail, the SACCFull metric 

would allow consumers to compare 

single-speed portable AC and variablespeed portable AC capacities on a likefor-like basis, when a manufacturer 

certifies in accordance with appendix 

CC. Upon the effective date and 

universal use of appendix CC1, this 

SACCFull metric would no longer be 

necessary, as the SACC metric in 

appendix CC1 would take into account 

the reduced cooling capacity provided 

by both single-speed and variable-speed 

basic models. DOE would consider 

reporting requirements necessary for 

certifying compliance with energy 

conservation standards of covered 

appliances in a separate rulemaking, 

and would address reporting 

requirements for SACCFull at that time. 

In the LG Waiver, DOE required that 

the ‘‘full speed’’ 95 °F outdoor 

temperature test be conducted using a 

maximum compressor speed achieved 

using instructions provided by the 

portable AC manufacturer. 85 FR 33643, 

33651. In the Midea Interim Waiver, 

DOE altered this requirement to require 

that the maximum compressor speed be 

reached by adjusting user controls such 

that the compressor runs continuously 

under a full cooling load. 86 FR 17803, 

17809. DOE made this change based on 

its own test data and the advice of 

commenters. Achieving full compressor 

speed with user controls (i.e., native 

controls) rather than manufacturerspecified codes ensures that the 

maximum speed tested is representative 

of real-world performance. Accordingly, 

DOE proposes to amend appendix CC to 

adopt the test procedure provisions 

specified in the Midea Interim Waiver. 

DOE is also proposing to include such 

provisions in the proposed new 

appendix CC1. 

DOE is also proposing to amend the 

SACC calculations in appendix CC and 

in the proposed new appendix CC1. In 

the LG Waiver and Midea Interim 

Waiver, the alternate test procedures 

require the use of the low compressor 

speed at the 83 °F test condition as the 

basis for the SACC calculation. 85 FR 

33643, 33650 (June 2, 2020); 86 FR 

17803, 17811 (Apr. 6, 2021). The 

alternate test procedures require the use 

of the low compressor speed, as it 

would be the best representation of 

typical performance and cooling 

provided at the 83 °F test condition. 

Therefore, as discussed in section 

III.B.5.c of this document, DOE proposes 

to adopt the waiver and interim waiver 

alternate test procedure approach and 

use the low compressor speed when 

determining variable-speed portable AC 

capacity at the 83 °F test condition. 

However, DOE recognizes that cooling 

capacity is one of the primary metrics 

that manufacturers advertise to 

consumers, and that, when using 

appendix CC, the comparatively lower 

SACC values for variable-speed models 

resulting from using the low compressor 

speed at the 83 °F test condition relative 

to comparable single-speed units (which 

do not operate continuously at a 

reduced speed but typically cycle at that 


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9Further information regarding the development 

of the operating hours is provided in the February 

25, 2015 NOPR and November 27, 2015 

supplemental NOPR, available at 

www.regulations.gov/docket/EERE-2014-BT-TP0014-0009 and www.regulations.gov/docket/EERE2014-BT-TP-0014-0021, respectively. 

low temperature condition), may create 

an unwarranted competitive 

disadvantage for single-speed models in 

the market and confusion for 

consumers. Therefore, DOE is proposing 

to require manufacturers, when testing a 

variable-speed portable AC using 

appendix CC, to represent capacity 

using a new metric, SACCFull, using the 

full compressor speed at the 83 °F test 

condition. DOE does not propose to 

define SACCFull in appendix CC1, nor 

require the use of such a metric for 

representations until the compliance 

date of any amended standards for 

portable ACs, when the use of appendix 

CC1 would be required. The proposed 

new appendix CC1 addresses singlespeed portable AC performance at partload under the low temperature 

condition (see the discussion of cycling 

losses and part-load operation in section 

III.5.e of this document), such that when 

using the proposed new appendix CC1, 

no such comparability issues would 

arise between the SACC values for 

single-speed and variable-speed AC 

units. 

The reduced cooling load typically 

observed at the 83 °F test condition is 

not currently accounted for in appendix 

CC for either single-duct or dual-duct 

portable ACs. In the proposed new 

appendix CC1, DOE is proposing to 

adopt the most representative SACC 

calculation for all portable ACs. For a 

variable-speed portable AC, this value 

would be the measured cooling capacity 

for the unit operating with a low 

compressor speed at the 83 °F test 

condition. For a single-speed unit, this 

value would be the unit’s cooling 

capacity measured at the 83 °F test 

condition multiplied by a load factor— 

0.6 for single-duct units and 0.5363 for 

dual-duct units. This change would 

provide the most representative cooling 

capacity for both single-speed and 

variable-speed units, as would reflect 

the expected average rate of cooling 

when operating at the 83 °F test 

condition, as indicated by the AirConditioning, Heating, and Refrigeration 

Institute (‘‘AHRI’’) Standard 210/240, 

‘‘Performance Rating of Unitary Airconditioning & Air-source Heat Pump 

Equipment’’ (‘‘AHRI 210/240’’) Building 

Load Calculation, found in section 

11.2.1.2 of that standard. Both 

adjustments are discussed in section 

III.B.5.c of this document. 

In this NOPR, DOE proposes to amend 

appendix CC to adopt the CEER 

calculation from the LG Waiver and 

Midea Interim Waiver alternate test 

procedures for variable-speed portable 

ACs, with an updated cycling factor 

based on new test data (as discussed in 

section III.B.5.e of this document) to 

address the efficiency benefits 

associated with a variable-speed 

portable AC relative to a single-speed 

portable AC when operating at reduced 

test conditions. To maintain 

compatibility with the existing portable 

AC standards, DOE is not proposing to 

amend the CEER calculation in 

appendix CC for single-speed portable 

ACs. 

However, DOE is proposing to change 

the CEER calculation for both singlespeed and variable-speed portable ACs 

in the proposed new appendix CC1 to 

account for cyclic behavior of singlespeed portable ACs and to improve 

representativeness. This proposed 

approach entails changing the operating 

hours for all portable ACs, namely how 

off-cycle mode hours are allocated (see 

section III.4 of this document) and to 

include a cycling factor in the CEER 

equation for single-speed portable ACs 

to account for cycling efficiency losses 

outside of off-cycle mode. For detailed 

discussion of these changes, see section 

III.5.f of this document. 

4. Representative Average Period of Use 

a. Operational Modes 

The measured energy performance of 

a portable AC includes energy use 

associated with cooling mode and offcycle mode during the cooling season, 

and inactive mode and off mode energy 

use for the entire year. In the April 2021 

RFI, DOE sought comment regarding 

whether any of the currently considered 

modes in the DOE test procedure should 

no longer be addressed, or whether any 

representative modes that are not 

currently considered should be 

addressed in future test procedure 

amendments. DOE also sought comment 

regarding whether the performance and 

energy use for these operational modes 

are appropriately addressed and 

captured in the DOE test procedure. 86 

FR 20044, 20047–20048. 

DOE received comments on air 

circulation mode, dehumidification 

mode, and heating mode, which are 

discussed below in sections III.B.6, 

III.B.7, and III.B.8 of this document, 

respectively. 

b. Hours of Operation 

As discussed in this section, DOE is 

proposing a revised set of annual 

operating hours for portable ACs, shown 

in Table III.2 of this document. 

To determine the energy use during a 

representative period of use, the current 

DOE test procedure assigns the 

following hours of operation for each 

mode: 750 hours for cooling mode, 880 

hours for off-cycle mode, and 1,355 

hours for inactive or off mode. Section 

5.3 of appendix CC. These operating 

hours were established in the June 2016 

Final Rule. Because as at that time there 

was insufficient data for portable AC 

use, DOE derived these values from the 

existing operating hours for room ACs. 

DOE adjusted the room AC usage data 

to reflect portable ACs usage; for 

example, inactive mode and off mode 

estimates outside of the cooling season 

were decreased because portable ACs 

are more likely to be unplugged outside 

of the cooling season as compared to 

room ACs, which are less portable.9 81 

FR 35241, 35258–35259. In the April 

2021 RFI, DOE stated it was unaware of 

any portable AC usage data sufficient to 

characterize representative consumer 

usage in a manner more representative 

than considered in the previous test 

procedure rulemaking, noted that no 

such data or data sources had been 

provided by commenters to date, and 

requested data regarding annual 

operating hours for all representative 

modes of operation for portable ACs. 86 

FR 20044, 20048. 

AHAM urged DOE not to rely on room 

AC data to determine annual operating 

hours for portable ACs, stating that 

portable and room ACs may be similar 

in some ways, but that usage of the 

products differs, as DOE recognized in 

the April 2021 RFI. AHAM stated that 

DOE should refrain from using room AC 

data to support rulemaking activity for 

portable ACs unless there is evidence 

that the data are a sufficient surrogate. 

(AHAM, No. 8 at p. 3) AHAM also 

asserted that, to establish or amend 

representative average use cycles or 

periods of use, DOE must have national, 

statistically significant, field use data 

(not surveys) on consumer use. Without 

such data, AHAM claimed that it is 

impossible and inappropriate for DOE to 

determine or change the average use 

cycle in a test procedure. AHAM 

asserted that EPCA does not 

contemplate test procedures that 

measure every possible cycle, 

combination of options, or use pattern; 

and that EPCA instead requires test 

procedures measure only a 

‘‘representative average use cycle or 

period of use.’’ AHAM further stated 

that test procedures will inevitably 

become unduly burdensome to conduct 

if, to measure every possible kilowatthour, test procedures are amended to 

account for every possible cycle or 

pattern. AHAM urged DOE to focus on 


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representative, average use cycles. 

(AHAM, No. 8 at p. 3) AHAM did not 

provide data or identify data sources for 

portable AC use. 

DOE has been unable to identify 

nationally representative data and 

information regarding annual operating 

hours specifically for portable ACs 

independent from estimates based on 

room AC operating hours. DOE also 

considered whether operating hours for 

other air conditioning equipment could 

be relevant but found no evidence that 

changing the current portable AC 

operating hours that are based on room 

AC usage would be more representative. 

Therefore, DOE is not proposing to 

amend the operating hours in appendix 

CC. 

As discussed, DOE is proposing to 

address cycling behavior of single-speed 

portable ACs in the proposed new 

appendix CC1. When a single-speed 

portable AC setpoint is reached, the 

compressor automatically turns off and 

the unit enters off-cycle mode until the 

compressor reactivates according to the 

thermostat or temperature sensor signal. 

Whereas when a variable-speed portable 

AC setpoint is reached, the compressor 

continues to run, but at a lower speed 

to match the load, avoiding cycling and 

off-cycle mode operation entirely. As 

part of the proposal to address cycling 

behavior, DOE has assessed the annual 

operating hours for portable ACs in the 

proposed new appendix CC1 to more 

representatively account for cooling 

mode and off-cycle mode operation. For 

single-duct portable ACs, the current 

appendix CC specifies 750 annual 

operating hours for cooling mode. For 

dual-duct portable ACs, the current 

appendix CC specifies a total of 750 

cooling mode hours apportioned 

between the two specified test 

conditions (95 °F and 83 °F), with 

weighting factors of 0.2 and 0.8 applied 

to the 95 °F and 83 °F tests, respectively. 

In assigning these hours to cooling 

mode, the current portable AC test 

procedure does not account for the 

relationship between cyclic behavior 

and off-cycle mode as it relates to 

single-speed portable ACs in typical 

operation. 

To better represent and measure the 

effects of cyclic behavior in the 

proposed new appendix CC1, DOE 

reassessed and reallocated the existing 

750 cooling mode operating hours to the 

95 °F and 83 °F test conditions, taking in 

to account the expected off-cycle mode 

hours that correspond to the cooling 

mode hours at the 83 °F test condition. 

To do so, DOE divided the 750 

‘‘compressor on’’ cooling mode hours 

between the two test conditions based 

on the Temperature Bin Hours from 

Table 16, titled ‘‘Fractional Bin Hours to 

Be Used in Calculation of SEER’’ in 

AHRI 210/240. DOE considered the 

AHRI 210/240 fractional bin hours 

allocation because it is widely accepted 

by industry as applicable for air 

conditioning equipment and because it 

is the source of the building load 

calculation that DOE proposes to use to 

calculate the expected cooling load for 

portable ACs. DOE summed the 

fractional hours for the closest 

temperature bins to each cooling mode 

test condition—bins 6, 7, and 8 for the 

95 °F test condition, and bins 4 and 5 for 

the 83 °F cooling mode test condition— 

and then normalized the weighting 

factors by dividing those fractional 

hours by the total number of fractional 

hours used from the table. This resulted 

in weighting factors of 14 percent and 

86 percent (see section III.5.c of this 

document) for the 95 °F and 83 °F 

cooling mode test conditions, 

respectively. DOE excluded bins 1–3 

because these bins fall below the indoor 

test condition temperature of 80 °F, 

indicating that they are outside of the 

most representative use period for 

portable ACs. Multiplying these 

weighting factors by 750 hours yielded 

a split of those cooling mode hours into 

164 hours and 586 hours for the 95 °F 

and 83 °F cooling mode test conditions, 

respectively, for single-speed units. 

TABLE III.1—CALCULATION OF WEIGHTING FACTORS FROM AHRI 210/240 FRACTIONAL BIN HOURS

Bin No. Bin 

temperature 

Fractional bin 

hours Sum of fractional hours Percent of total used fractional hours (weighting factors) 

1 .................................................... 67 0.214 Not Used ...................................... N/A 

2 .................................................... 72 0.231 

3 .................................................... 77 0.216 

4 .................................................... 82 0.161 0.265 ............................................. 78 

5 .................................................... 87 0.104 

6 .................................................... 92 0.052 0.074 ............................................. 22 

7 .................................................... 97 0.018 

8 .................................................... 102 0.004 

DOE estimated off-cycle mode hours 

for single-speed units as follows: Based 

on the AHRI 210/240 Building Load 

Calculation found in section 11.2.1.2 of 

that standard, single-speed units operate 

under a reduced load equal to 60 

percent of the full cooling load. 

Therefore, at the reduced load, a singlespeed unit would be expected to operate 

in cooling mode (i.e., compressor on) for 

60 percent of that time and off-cycle 

mode (i.e., compressor off) for the 

remaining 40 percent of that time. 

Accordingly, because the 586 cooling 

mode (compressor on) hours assigned to 

the 83 °F cooling mode test condition 

represent 60 percent of the total 

operating hours in reduced load 

conditions, DOE estimates that there are 

977 total operating hours at the 83 °F 

cooling mode test condition (i.e., 

including both cooling mode and offcycle mode). This is the sum of the 586 

cooling mode hours at the 83 °F cooling 

mode test condition, calculated above, 

and 391 hours, representing the offcycle mode hours (calculated as 977 

hours × 0.40). Because variable-speed 

portable ACs are not expected to enter 

off-cycle mode at the 83 °F test 

condition, the proposed cooling mode 

hours at the 83 °F test condition 

represent the total variable-speed 

operating hours at the 83 °F test 

condition (i.e., 977 hours). 

Appendix CC currently allocates 

1,355 hours to off and inactive modes. 

To account for cyclic behavior, or the 

avoidance of it, DOE proposes to 

increase this to reflect hours currently 

considered as part of off-cycle mode. 

DOE estimated updated off/inactive 

mode hours for the proposed new 

appendix CC1 as follows: appendix CC 

currently allocates 880 hours to offcycle mode. As described previously, 

under the proposed new appendix CC1, 

DOE proposes to allocate 391 hours to 

off-cycle mode for single-speed units 

based on estimates derived from the 

AHRI 210/240 Building Load 


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10As discussed, for variable-speed units, these 

391 hours are allocated to cooling mode hours at 

the 83 °F test condition. 

Calculation.10 In the May 2015 NOPR, 

DOE determined that portable ACs 

spend 2,985 hours per year plugged in. 

Because the total number of hours spent 

plugged in would not change with the 

revised number of off-cycle mode hours, 

DOE proposes to re-allocate the 

difference between the current and 

proposed off-cycle mode hours—489 

hours—to off/inactive mode in the 

proposed new appendix CC1, yielding a 

total of 1,844 hours for off/inactive 

mode (i.e., the sum of 1,355 and 489). 

DOE maintains that the analysis used 

for the appendix CC was based on the 

best available data for portable AC 

operation, although it does not take into 

account cyclic behavior. DOE is 

proposing these changes to the 

operating hours in the new appendix 

CC1 to account for cyclic behavior (or 

the avoidance of it) in all units, which 

would improve test procedure 

representativeness overall. 

Table III.2 summarizes the annual 

operating hours for portable ACs under 

current appendix CC and the proposed 

new appendix CC1. 

TABLE III.2—ANNUAL OPERATING HOURS FOR PORTABLE ACS

Operating mode Appendix CC Proposed new appendix CC1 

Cooling Mode, 95 °F .................................................................. 1 750 164. 

Cooling Mode, 83 °F .................................................................. 1 750 586 (Single-Speed). 

977 (Variable-Speed). 

Off-Cycle Mode ........................................................................... 880 391 (Single-Speed). 

0 (Variable-Speed). 

Off/Inactive Mode ....................................................................... 1,355 1,844. 

1These operating mode hours are for the purposes of calculating annual energy consumption under different ambient conditions and are not a 

division of the total cooling mode operating hours. The total dual-duct cooling mode operating hours are 750 hours. 

Appendix CC 

As discussed previously, DOE is not 

proposing to change the annual 

operating hours in appendix CC. 

Appendix CC1 

DOE proposes to adopt in the new 

appendix CC1 the operating hours 

shown in Table III.2 of this document. 

DOE requests comment on the 

proposal to amend the operating hours 

in the proposed new appendix CC1 as 

shown in Table III.2 of this document. 

c. Configurations 

The current portable AC test 

procedure in appendix CC addresses 

two configurations of portable ACs: 

dual-duct and single-duct. Appendix CC 

currently requires that portable ACs able 

to operate as both a single-duct and 

dual-duct portable AC, as distributed in 

commerce by the manufacturer, must be 

tested and rated for both duct 

configurations. Section 3.1.1 of 

appendix CC. 

In the April 2021 RFI, DOE requested 

feedback regarding single-duct and 

dual-duct portable AC test requirements 

and any other relevant considerations to 

ensure that the test procedures produce 

representative results for both 

configurations, including products that 

operate in both configurations, as 

distributed in commerce by the 

manufacturer. 86 FR 20044, 20048– 

20049. 

NEEA recommended that DOE 

maintain the requirement for products 

that can operate as both dual-duct and 

single-duct portable ACs to be tested in 

both configurations. NEEA stated that, 

given the difference in performance 

between single-duct and dual-duct 

products, if a product can be configured 

as single duct, it should be tested in this 

configuration. (NEEA, No. 12 at p. 3) 

In this NOPR, DOE is not proposing 

any amendments to the configurations 

addressed by the test procedure in 

appendix CC and proposes to adopt the 

same requirements in the new appendix 

CC1. 

DOE requests comment on the 

proposal to adopt in the new appendix 

CC1 the requirement that portable ACs 

able to operate as both a single-duct and 

dual-duct portable AC, as distributed in 

commerce by the manufacturer, must be 

tested and rated for both duct 

configurations. 

5. Cooling Mode 

a. Test Conditions 

Section 4 of appendix CC measures 

cooling capacity and overall power 

input in cooling mode using one test 

condition for single-duct units and two 

test conditions for dual-duct units. For 

single-duct units, the test procedure 

specifies an 80 °F dry-bulb/67 °F wetbulb condenser (‘‘outdoor’’) inlet air test 

condition. For dual-duct units, 

configuration A specifies a 95 °F drybulb/75 °F wet-bulb outdoor test 

condition and configuration B specifies 

an 83 °F dry-bulb/67.5 °F wet-bulb 

outdoor test condition. See Section 4.1 

of appendix CC. 

The California IOUs commented that 

the portable AC test procedure is the 

only test procedure that uses a low-load, 

outdoor test condition of 83 °F dry-bulb/ 

67.5 °F wet-bulb; all other residential 

AC test procedures use a low-load 

condition of 82 °F dry-bulb/65 °F wetbulb. The California IOUs suggested that 

DOE change the low-load condition for 

the portable AC test procedure to 82 °F 

dry-bulb/65 °F wet-bulb. (California 

IOUs, No. 10 at p. 4) 

Rice suggested that DOE consider drybulb temperature conditions of 82, 87, 

and 95 °F, instead of the current 83 and 

95 °F conditions, to represent 

temperature bins of 80 to 85 °F, 85 to 

90 °F, and 90 to 100 °F, respectively, 

along with suitable AHRI 210/240 

fractional hours and cooling loads at 

these three temperatures. According to 

Rice, this would provide more 

comparability with the room AC test 

procedure conditions and would better 

represent the performance non-linearity 

with ambient conditions for variablespeed products. To avoid the need to 

retest single-speed portable AC units to 

these new conditions, Rice asserted that 

performance at 82 and 87 °F could be 

extrapolated and interpolated from 

existing 83 and 95 °F single-speed 

portable AC test data. (Rice, No. 11 at 

pp. 2–3) 

As described in the supplemental 

NOPR published November 27, 2015, 

and confirmed in the June 2016 Final 

Rule, the low-load test condition of 

83 °F dry-bulb/67.5 °F wet-bulb reflects 

the national weighted-average 

temperature and humidity observed 

during the hottest 750 hours (the hours 

during which DOE expects portable ACs 

to operate in cooling mode). DOE 


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11 DOE uses room AC data because RECS has no 

portable AC data. DOE has previously stated that 

room ACs and portable ACs differ from each other 

in that they have different installation means, and 

that they induce different amounts of outdoor air 

infiltration heat and other unwanted heat transfer 

to the conditioned space. 86 FR 20044, 20047. 

However, room ACs and portable ACs have similar 

use cases (i.e., both products provide seasonal 

cooling) such that in the absence of data for 

portable ACs, the ownership data and weather data 

for room ACs is sufficiently applicable to analysis 

of portable AC cooling mode. 

12Appendix CC is a constant temperature test, in 

which the portable AC begins cooling the ‘‘indoor’’ 

chamber of a psychrometric chamber with the 

thermostat setpoint set to the lowest possible value. 

Reconditioning equipment maintains the indoor 

chamber temperature at 80 °F, such that the portable 

AC is never able to cool the room to the thermostat 

set temperature. In this test setup, the portable AC 

will run at full compressor speed indefinitely, it 

will not reduce compressor speed or cycle the 

compressor off. 

determined these values based on its 

analysis of hourly ambient temperature 

data from the National Climatic Data 

Center of the National Oceanic and 

Atmospheric Administration collected 

at weather stations in 44 representative 

states, combined with its analysis of the 

2009 Residential Energy Consumption 

Survey (‘‘RECS’’) to identify room AC 

ownership 11 in the different geographic 

regions. Based on the RECS ownership 

data and weather data, DOE used a 

weighted-average approach to combine 

the average temperature and humidity 

for each individual state into subregional, regional, and finally, the 

representative national average 

temperature and humidity for the 

hottest 750 hours in each state. DOE 

found that the national average dry-bulb 

temperature and relative humidity 

associated with the hottest 750 hours 

are 83 °F and 45 percent, respectively 

(corresponding to a wet-bulb 

temperature of 67.5 °F). 80 FR 74020, 

74026; 81 FR 35241, 35250. DOE 

maintains that this analysis yields the 

most representative operating periods 

for portable ACs. 

In response to Rice’s suggestions, the 

addition of a third test condition would 

increase test burden by 50 percent for 

all models. This increase in test burden 

would not be justifiable, as the 

additional test condition between the 

two current test conditions would not 

provide significantly more information 

on the performance of portable ACs. 

Based on past modeling that explored 

the impact of adjusted outdoor test 

conditions on air conditioner 

performance, DOE expects that 

performance at intermediate 

temperatures is relatively linear 

between the two temperature data 

points, resulting in minimal difference 

in weighted-average performance if an 

intermediate temperature data point is 

included. Furthermore, an additional 

test condition would not provide full 

comparability with the room AC test 

procedure, which, as previously 

discussed, has four test conditions for 

variable-speed units and one test 

condition for single-speed units. 

Extrapolating/interpolating performance 

at three test conditions based on the 

existing test conditions increases the 

complexity of the test procedure 

without benefit, as the extrapolated/ 

interpolated data points would be based 

on the same data currently being used 

in the portable AC test procedure. 

AHAM PAC–1–2022 Draft specifies 

the same test conditions for single-speed 

units as the current appendix CC and, 

for variable-speed units, AHAM PAC–1– 

2022 Draft specifies the same test 

conditions as the test procedure waivers 

and as proposed in this NOPR. 

DOE proposes to adopt AHAM PAC– 

1–2022 Draft in the new appendix CC1, 

and, by extension, the test conditions 

contained therein. In revisions to the 

appendix CC, DOE is not proposing to 

change the test conditions for singlespeed portable ACs. Consistent with the 

LG Waiver and Midea Interim Waiver, 

DOE is proposing to adopt multiple test 

conditions for variable-speed portable 

ACs: two for single-duct models and 

three for dual-duct models. 

DOE requests comment on the 

proposal to add variable-speed test 

conditions in appendix CC consistent 

with the LG Waiver and Midea Interim 

Waiver while otherwise retaining the 

current test conditions, and to adopt the 

AHAM PAC–1–2022 Draft test 

conditions in the proposed new 

appendix CC1. 

b. Achieving Compressor Speeds 

The alternate test procedure specified 

in the LG Waiver requires both the full 

and low compressor speeds to be 

achieved using special instructions and 

settings provided by the manufacturer to 

DOE and laboratories. 85 FR 33643, 

33651. The alternate test procedure 

specified in the Midea Interim Waiver 

requires the full compressor speed to be 

achieved by using user controls (‘‘native 

controls’’) with the thermostat setpoint 

set at 75 °F, and the low compressor 

speed to be achieved using 

manufacturer settings. 86 FR 17803, 

17808–17809. Consistent with that 

approach, AHAM PAC–1–2022 Draft 

specifies using native controls to 

achieve the full compressor speed, and 

using instruction and settings provided 

by the manufacturer to laboratories to 

achieve the low compressor speed. 

Using native controls to achieve the 

full compressor speed would ensure 

that the measured full speed is 

representative of real-world operation 

but is impractical. The only way to 

reach reduced compressor speeds using 

native controls during testing would be 

with load-based tests, which DOE has 

tentatively concluded are impractical 

for portable ACs at this time, as 

discussed in section III.5.g of this 

document. Therefore, to improve 

representativeness, DOE is proposing 

that for variable-speed portable ACs, in 

both appendix CC and the proposed 

new appendix CC1, the full compressor 

speed be achieved by using native 

controls with the thermostat setpoint set 

at 75 °F and the low compressor speed 

to be achieved using instructions and 

settings provided by the manufacturer to 

DOE and laboratories. This proposal is 

consistent with the alternate test 

procedure specified in the Midea 

Interim Waiver and with AHAM PAC– 

1–2022 Draft. This is a change from the 

procedure specified in the LG Waiver 

and would require retesting of the 

models listed in that waiver. 

DOE proposes to adopt AHAM PAC– 

1–2022 Draft in the new appendix CC1, 

and, by extension, the compressor speed 

requirements contained therein. In 

revisions to the appendix CC, DOE is 

proposing to adopt the native control 

and manufacturer setting approach set 

forth in the Midea Interim Waiver. 

DOE requests comment on the 

proposal to add compressor speed 

requirements in appendix CC consistent 

with the Midea Interim Waiver, and to 

adopt the AHAM PAC–1–2022 Draft 

compressor speed requirements in the 

proposed new appendix CC1. 

c. Seasonal Adjusted Cooling Capacity 

Under the current test procedure, a 

unit’s SACC, in Btu/h, is calculated as 

a weighted average of the adjusted 

cooling capacity measured at the two 

specified operating conditions (i.e., 

95 °F and 83 °F). Under appendix CC, 

full-load operation is used to measure 

each test condition,12 such that the 

SACC reflects full-load operation at both 

test conditions. The LG Waiver and 

Midea Interim Waiver change the 

operating condition at the 83 °F 

condition to use the ‘‘low’’ compressor 

speed (i.e., part-load performance) 

instead. Accordingly, the SACC for the 

models subject to the LG Waiver and 

Midea Interim Waiver reflects full-load 

operation at the 95 °F condition and 

part-load operation at the 83 °F 

condition. DOE required this approach 

in the test procedure waivers because it 

yields a more representative measure of 

capacity. However, DOE proposes in 

this NOPR to test variable-speed 

portable ACs at full-load operation at 


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13A notation in the form ‘‘Midea, Midea Petition 

for Waiver, No. 9 at pp. 1–2’’ identifies a written 

comment: (1) Made by Midea; (2) recorded in 

document number 9 that is filed in the docket of 

the Midea Petition for Waiver from Portable Air 

Conditioners Test Procedure (Docket No. EERE– 

2020–BT–WAV–0023) and available for review at 

www.regulations.gov; and (3) which appears on 

pages 1 and 2 of document number 9. 

14While dual-duct and single-duct portable ACs 

experience the same load at 83 °F, dual-duct units 

experience an increase in cooling capacity as 

outdoor process air temperatures decrease due to 

the cooler outdoor air being more effective at 

removing heat from the condenser. Single-duct 

units do not experience this increase because the 

air entering the condenser is always the same 

indoor air temperature of 80 °F. This cooling 

capacity increase allows dual-duct portable ACs to 

remove heat from rooms more quickly at the 83 °F 

outdoor temperature condition, thus leading to less 

time with the compressor on. DOE used 

thermodynamic modeling to measure the expected 

capacity change for dual-duct portable ACs between 

the 95 °F and 83 °F test conditions and used this to 

confirm the AHAM PAC–1–2022 Draft adjustment 

of the cooling load factor for dual-duct portable ACs 

from 60 percent of full load operation at a 95 °F 

outdoor temperature to 53.63 percent of full load 

operation at an 83 °F outdoor temperature. 

each test condition for the purpose of 

measuring SACC, which would differ 

from the alternate test procedure 

required under the LG Waiver and the 

Midea Interim Waiver, for the reasons 

that follow. 

In response to the Midea Interim 

Waiver, Midea reiterated its 

recommendation to determine Adjusted 

Cooling Capacity (‘‘ACC’’) at the 83 °F 

test condition with the compressor 

operating at full speed, which Midea 

asserted should be used to calculate 

SACC in accordance with Section 5.2 of 

appendix CC. Midea suggested that if 

the ACC at the 83 °F test condition with 

the compressor operating at low speed 

is used in calculating SACC, the SACC 

would be underreported compared to 

single-speed units that would be used in 

the same applications. Midea requested 

that the full compressor speed be 

specified for both test conditions for the 

purposes of calculating SACC. (Midea, 

Midea Petition for Waiver, No. 9 at pp. 

1–4) 13

Currently, SACC for single-speed 

portable ACs is based in appendix CC 

on full-load operation at the low (83 °F) 

test condition, while the LG Waiver and 

Midea Interim Waiver require SACC for 

the specified basic models of variablespeed portable ACs to be based on partload operation (i.e., low compressor 

speed) at the low test condition. As a 

result, DOE agrees with Midea that the 

SACC values for the variable-speed 

models tested using the waiver test 

procedure are not directly comparable 

to the SACC values of single-speed units 

tested pursuant to appendix CC. 

Generally, operating at part-load yields 

a lower measured capacity; therefore, 

the SACC values for the subject 

variable-speed models are lower than 

the SACC values for otherwise identical 

single-speed models. DOE understands 

that cooling capacity is one of the 

primary metrics that manufacturers 

advertise to consumers. The approaches 

required under the existing waivers, by 

resulting in comparatively lower SACC 

values for the subject variable-speed 

models, may limit the comparability of 

the performance between single-speed 

models and the variable-speed models 

subject to the LG Waiver and Midea 

Interim Waiver. 

Although DOE proposes to change 

how to measure SACC in appendix CC1, 

in appendix CC, DOE is proposing to 

maintain the Midea Interim Waiver 

approach of determining SACC using 

the low compressor speed to represent 

part-load operation at the 83 °F outdoor 

temperature test condition but adding 

another metric, SACCFull, to facilitate 

consumer comparisons. DOE expects 

that portable ACs will typically 

encounter reduced cooling loads when 

the outdoor temperature is 83 °F, based 

on the building load calculation found 

in Section 11.2.1.2 of AHRI 210/240. 

Therefore, the cooling capacity more 

representative of the average period of 

use includes reduced compressor speed 

operation at the 83 °F outdoor 

temperature condition. However, DOE 

understands variable-speed portable AC 

manufacturers have an interest in the 

ability to make representations of 

cooling capacity based on fullcompressor speed at the 83 °F outdoor 

temperature test condition, comparable 

to how single-speed units are tested in 

appendix CC. Therefore, DOE proposes 

to require in appendix CC that 

manufacturers of variable-speed 

portable ACs base representations of 

cooling capacity on an additional new 

metric, SACCFull, using full compressor 

speed performance to calculate SACCFull

at the low test condition. This 

additional metric would provide 

consumers with comparable capacity 

ratings for variable-speed and singlespeed portable ACs while appendix CC 

is in use. 

For the proposed new appendix CC1, 

DOE proposes to account for cyclic 

behavior in both single-speed and 

variable-speed units by modifying the 

SACC calculation to factor in reduced 

capacity from part-load operation at the 

low (83 °F) test condition. This change 

would align all models with the waiver 

approach to variable-speed SACC. For 

single-speed units, the test at the low 

test condition would still be performed 

at full load, but the resulting cooling 

capacity would be multiplied by a load 

factor defined as 0.6 for single-duct 

units and 0.5363 for dual-duct units.14

These adjustments would account for 

cooling capacity lost due to compressor 

cycling under reduced cooling loads, 

which DOE expects portable ACs will 

typically encounter when the outdoor 

temperature is 83 °F, as discussed 

previously. This approach would result 

in reduced SACC values for singlespeed portable ACs relative to those 

calculated by the current test procedure 

at appendix CC. This would also result 

in comparable SACC values between 

single-speed and variable-speed 

portable ACs, eliminating any need in 

appendix CC1 for the adjusted SACCFull

proposed for appendix CC. 

Appendix CC 

DOE is proposing to maintain the 

current SACC calculation for singlespeed units in the revised appendix CC. 

DOE also proposes that the SACC for 

variable-speed units be calculated using 

the low compressor speed at the 83 °F 

test condition in appendix CC 

consistent with the previously granted 

LG Waiver and Midea Interim Waiver. 

DOE also proposes to require 

manufacturers to represent cooling 

capacity with a new metric, SACCFull, 

for variable-speed portable ACs, using 

the full compressor speed at the 83 °F 

test condition. 

Appendix CC1 

DOE is proposing to adopt an updated 

approach in calculating SACC, for 

variable-speed units, using the 

measured cooling capacity at the 83 °F 

test condition using the low compressor 

speed, aligning with the waiver 

approach, and for single-speed units, 

multiplying the measured cooling 

capacity at the 83 °F test condition by a 

load factor of 0.6 for single-duct units 

and 0.5363 for dual-duct units. 

DOE requests comment on the 

proposal to maintain in the revised 

appendix CC the current SACC 

calculation for single-speed units and to 

adopt a SACC calculation consistent 

with the test procedure waivers for 

variable-speed units for the purposes of 

determining CEER. DOE also requests 

comment on the proposal to require 

manufacturers of variable-speed units to 

represent cooling capacity using a new 

metric, SACCFull, based on full load 

performance at the low temperature 

condition. DOE further requests 

comment on the proposal to adopt an 

updated SACC calculation for singlespeed units and variable-speed units 

that accounts for reduced cooling load 


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at the 83 °F test condition in the 

proposed new appendix CC1. 

d. Weighting Factors 

The current portable AC test 

procedure calculates SACC and CEER as 

weighted averages of the results of 

various calculations, based on the 

measured capacity and power values at 

the two portable AC test conditions, 

representing outdoor temperatures of 

95 °F and 83 °F. Both equations use 

weighting factors of 0.2 and 0.8 for the 

two test conditions, respectively. See 

Section 5.4 of appendix CC. 

Rice and the Joint Commenters stated 

that these current weighting factors 

potentially underweight performance at 

95 °F and overweight performance at 

83 °F by not taking into account that the 

cooling provided during operation at 

95 °F is significantly greater than during 

operation at 83 °F. They encouraged 

DOE to reevaluate the weighting factors 

used in the portable AC test procedure. 

(Rice, No. 11 at pp. 2–3; Joint 

Commenters, No. 9 at p. 3) Rice 

suggested deriving cycling loss factors 

using a building load calculation 

starting with full load at 95 °F and 

decreasing to zero load at 65 °F. This is 

similar to what is done in AHRI 210/ 

240, except for the assumption of full 

load at 95 °F as opposed to altering the 

calculated full-load temperature based 

on test unit capacity. According to Rice, 

this would result in weighting factors of 

0.27 and 0.73 for the 95 °F and 83 °F 

conditions, respectively. Rice suggested 

that the 0.8 and 0.2 fractional hours in 

Section 5.2 of appendix CC were 

originally derived by considering the 

hottest 750 hours in relevant regions 

around the country, combined with 

related RECS data. Rice stated that 

while the conditions and weighting 

appear to be based on the hottest 750 

hours during the cooling season, the 

total seasonal cooling amount will be 

delivered over a wider range of ambient 

temperatures by matching the lower 

cooling loads, either by cycling or by 

variable-speed matching. As such, Rice 

argued that the assumption that portable 

ACs operate during the hottest 750 

hours in each region seems 

inappropriate. Rice stated that if DOE 

decides to move away from assumption 

of the hottest 750 hours, DOE should 

consider for those fractional hours the 

95, 87, and 82 °F test condition 

approach described above, with 

weighting factors of 0.28, 0.33, and 0.39, 

respectively, per AHRI 210/240 binned 

data sets. (Rice, No. 11 at pp. 2–3) 

The CEER weighting factors are used 

to calculate the fractional contribution 

of CEER at each test condition relative 

to the average representative period of 

portable AC use, based on cooling 

provided and estimated cooling mode 

operating hours at each test condition. 

As discussed in section III.B.5.a of this 

document, DOE derived the weighting 

factors in the current appendix CC from 

a geographically weighted average of 

operating hours best represented by 

each test condition, based on the 2009 

RECS data. The test conditions for 

which the weightings were determined 

represent peak performance (i.e., the 

95 °F test condition) and the weightedaverage temperature and humidity 

observed during the hottest 750 hours, 

the hours during which DOE expects 

portable ACs are most likely to operate 

in cooling mode (i.e., the 83 °F test 

condition). 81 FR 35242, 35252 (Jun. 1, 

2016). Because DOE is proposing in the 

new appendix CC1 to change the 

portable AC operating hours estimate 

from a RECS-based estimate to an 

estimate based on the bin operating 

hours and building load calculation 

from AHRI 210/240, DOE is proposing 

similar changes to the weighting factors 

in the proposed new appendix CC1 to 

maintain internal consistency. 

In determining the proposed new 

appendix CC1 weighting factors, DOE 

considered the portion of the proposed 

appendix CC1 total cooling mode and 

off-cycle mode hours spent at each 

temperature condition (see Table III.2 in 

section III.4.b of this document)—14.4 

percent of the total cooling mode hours 

are allocated to the 95 °F test condition 

and 85.6 percent to the 83 °F test 

condition. DOE is proposing to adopt 

these weighting factors for SACC only in 

the new appendix CC1. To avoid 

changing the SACC relative to the 

current values, DOE is not proposing 

changes to the SACC or CEER 

calculations in appendix CC to match 

these updated weighting factors, which 

were the basis for determining the 

energy conservation standards that are 

effective in January 2025, as discussed 

above. Therefore, DOE is proposing that 

the modified weighting factors be 

adopted only in the new appendix CC1. 

Specifically, DOE is proposing to adjust 

the weighting factors for the two test 

conditions, in accordance with the 

changes to the operating hours, to 0.144 

for the 95 °F test condition and 0.856 for 

the 83 °F test condition. 

DOE requests comment on the 

proposed weighting factors in the 

proposed new appendix CC1 (0.144 for 

the 95 °F test condition and 0.856 for the 

83 °F test condition). 

e. Cycling Losses 

Historically, portable ACs have been 

designed using a single-speed 

compressor, which operates at full 

cooling capacity while the compressor 

is on. When the required cooling load in 

a space is less than the full cooling 

capacity of the unit, a single-speed 

compressor cycles on and off. This 

cycling behavior introduces 

inefficiencies often referred to as 

‘‘cycling losses.’’ In addition, singlespeed portable ACs may experience 

inefficiencies by continuing to operate 

the blower fan during compressor off 

periods after the evaporator coils have 

warmed to the point that any further fan 

operation does not contribute to the 

unit’s overall cooling capacity. These 

two types of inefficiencies occur only 

for single-speed portable ACs; as 

discussed in the April 2021 RFI, 

variable-speed ACs avoid such 

inefficiencies because their compressors 

run continuously, adjusting their speeds 

as required to match the cooling load. 

86 FR 20044, 20050–20051. 

Cycling losses associated with singlespeed compressors are not currently 

accounted for in appendix CC. In the LG 

Waiver, DOE addressed the cycling of a 

single-speed compressor as part of a 

‘‘performance adjustment factor’’ 

(‘‘PAF’’). As established in the LG 

Waiver, the PAF represents the average 

performance improvement of the 

variable-speed unit relative to a 

theoretical comparable single-duct 

single-speed unit, resulting from the 

variable-speed unit’s avoiding cycling 

losses associated with the lower 

temperature test condition. 85 FR 

33643, 33646. The Midea Interim 

Waiver similarly requires use of a PAF. 

86 FR 17803, 17819–17820. 

In the April 2021 RFI, DOE requested 

further information and data on 

efficiency losses associated with singlespeed compressor cycling at part-load 

conditions. DOE also requested 

comment on the incorporation of the 

current waiver approach to determine 

variable-speed portable AC efficiency, 

based on a PAF representing the 

performance improvement relative to a 

single-speed portable AC resulting from 

elimination of cycling losses. 86 FR 

20044, 20050–20051. 

Rice, the Joint Commenters, and the 

California IOUs encouraged DOE to 

account for cycling losses in the 

portable AC test procedure to provide 

an accurate comparison of single-speed 

and variable-speed compressor 

performance. (Rice, No. 11 at p. 3; Joint 

Commenters, No. 9 at pp. 2–3; 

California IOUs, No. 10 at pp. 1–2) 

The Joint Commenters and the 

California IOUs stated that, in 

calculating the performance of a 

‘‘theoretical comparable’’ single-speed 

unit, the LG Waiver and Midea Interim 

Waiver for variable-speed portable ACs 


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include an assumed cycling loss factor 

for single-speed units to capture the 

benefits of variable-speed units in 

reducing cycling losses. They further 

commented that, in the Midea Interim 

Waiver, DOE modified the cycling loss 

factor to reflect load-based testing of two 

single-speed room AC units at reduced 

cooling loads. (Joint Commenters, No. 9 

at pp. 2–3; California IOUs, No. 10 at 

pp. 1–2) Rice and the Joint Commenters 

encouraged DOE to provide the basis for 

determining an appropriate cycling loss 

factor through the use of load-based 

testing, stating that there are likely 

differences related to cycling losses 

between room AC and portable AC 

designs. (Rice, No. 11 at p. 3; Joint 

Commenters, No. 9 at pp. 2–3) The 

California IOUs requested that DOE 

evaluate the cycling loss factor for a 

selection of single-duct and dual-duct 

portable ACs to determine the 

appropriate cycling loss factor to be 

used in the updated test procedure, but 

did not explicitly request that this be 

evaluated through the use of load-based 

testing. (California IOUs, No. 10 at pp. 

1–2) 

Rice also stated that, to date, the 

cooling degradation coefficients (‘‘Cds’’) 

proposed by DOE for portable ACs have 

been derived from load-based tests 

performed on single-speed room ACs, 

but asserted that there are likely various 

differences related to cycling losses 

between room AC and portable AC 

designs. Rice stated that no information 

was provided in those tests on how the 

fans were operated during the 

compressor off-cycles. Rice requested 

that this information should be reported 

and should be consistent with how 

these models will operate in the field at 

the rated control settings, asserting that 

fan operation can significantly affect Cd 

levels due to the fan power usage with 

minimal or no cooling output. (Rice, No. 

11 at p. 3) 

DOE conducted investigative testing 

of portable ACs to determine a 

representative cycling loss adjustment 

factor specifically for portable ACs. DOE 

aimed to calculate the difference in 

efficiency for single-speed portable ACs 

when tested under full-load constant 

load conditions and part-load cycling 

load conditions, while focusing on just 

the cycling losses and not fan operation 

in off-cycle mode. Load-based testing 

was infeasible for portable ACs with the 

equipment and facilities used in the 

investigative testing. Instead, DOE 

performed cyclic tests, which triggered 

single-speed portable AC cycling by 

remotely adjusting the setpoint of the 

test unit in a cyclic pattern while it was 

in the test chamber, simulating the 

behavior of the unit when the room 

temperature reaches the unit setpoint. 

DOE conducted tests on five units with 

two different test lengths, 10 minutes 

and 30 minutes, to account for realworld variations in unit capacity and 

room size. In the 30-minute test, the 

unit operated for roughly 16 minutes 

and cycled off for 14 minutes, 

approximating a 53 percent cooling 

load. In the 10-minute test, the unit 

operated for roughly 5.5 minutes and 

cycled off for 4.5 minutes, 

approximating a 55 percent cooling 

load. Table III.3 shows the relative 

difference in energy use during cyclic 

operation in comparison to energy use 

when operating continuously, expressed 

as a percentage. 

As shown in Table III.3, on average, 

the portable ACs that were tested 

performed at 81.9 percent of the 

efficiency when operating cyclically 

compared to when operating 

continuously, not counting energy lost 

to fan operation in off-cycle mode. 

TABLE III.3—RELATIVE EFFICIENCY DURING CYCLING OPERATION COMPARED TO CONTINUOUS OPERATION

Test length 30 min 10 min 

Unit 1 ....................................................................................................................................................................... 86% 1

Unit 2 ....................................................................................................................................................................... 80% 84% 

Unit 3 ....................................................................................................................................................................... 81% 84% 

Unit 4 ....................................................................................................................................................................... 79% 82% 

Unit 5 ....................................................................................................................................................................... 76% 82% 

Combined Avg ......................................................................................................................................................... 81.9% 

1The 10-minute test was not performed on Unit 1 due to limited test laboratory availability. 

Based on these test results, DOE 

proposes to use 0.82 as the cycling 

factor (CF), representing that a cycling 

unit is 82 percent as efficient as a unit 

which does not cycle, not accounting for 

any power consumed during off-cycle 

mode. 

Appendix CC and Appendix CC1 

DOE is proposing to account for 

cycling losses in the amended appendix 

CC by comparing variable-speed unit 

performance to that of a theoretical 

comparable single-speed unit, using the 

test procedure waiver approach, as 

previously discussed. Based on DOE’s 

investigative testing, the proposed CF 

for the theoretical comparable singlespeed unit in appendix CC would be 

0.82. 

In the proposed new appendix CC1, 

DOE would account for cycling losses 

directly in the single-speed portable AC 

CEER calculation, using the same CF 

proposed for appendix CC, 0.82. 

DOE requests comment on the 

proposal to adopt a CF of 0.82 based on 

DOE’s investigative testing, in appendix 

CC and in the proposed new appendix 

CC1. 

f. Energy Efficiency Calculations 

The current portable AC test 

procedure at appendix CC represents 

efficiency using CEER, an efficiency 

metric calculated as the weighted 

average of the condition-specific CEER 

values, including the annual energy 

consumption in cooling mode, off-cycle 

mode, and off or inactive mode. The 

alternate test procedures in the LG 

Waiver and Midea Interim Waiver 

adjusts the CEER metric in the test 

procedure to address the cycling of a 

single-speed compressor through a PAF. 

The PAF, which represents the average 

performance improvement of the 

variable-speed unit relative to a 

theoretical comparable single-duct 

single-speed unit at reduced operating 

conditions, is applied to the measured 

variable-speed unit efficiency. This 

approach increases the measured 

efficiency of a variable-speed portable 

AC relative to the measured efficiency 

of single-speed portable ACs. This 

approach reasonably represents the 

efficiency of a variable-speed portable 

AC relative to a single-speed portable 

AC as currently measured in accordance 

with appendix CC, and maintains 

compatibility with the existing portable 

AC standards. Therefore, DOE proposes 

to adopt in appendix CC the general 

approach from the LG Waiver and 

Midea Interim Waiver to determine 

variable-speed portable AC efficiency. 


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However, DOE recognizes that the 

waiver approach only indirectly 

addresses cycling losses and does not 

consider the effect on a single-speed 

unit’s performance of cycling losses 

from operating at reduced conditions. A 

more representative approach would be 

to apply the cycling losses to a singlespeed portable AC’s performance 

directly, and to make no such 

modifications to the measured variablespeed portable AC efficiency. Such an 

approach would require no calculation 

of a comparable theoretical single-speed 

portable AC and would no longer 

require a PAF. DOE notes that this 

general approach has been adopted in 

AHAM PAC–1–2022 Draft and, in the 

interest of adopting a simpler and most 

representative test procedure, DOE 

proposes to adopt such an approach in 

the proposed new appendix CC1. 

Section 5.4 of appendix CC currently 

specifies the equations for calculating 

CEER for both single-duct and dual-duct 

portable ACs. In each equation, the final 

CEER value is calculated as a weighted 

average of performance at each test 

condition (as applicable for the 

configuration): 

DOE received comments on the CEER 

equations in response to the April 2021 

RFI. Rice suggested that the equation for 

CEER should be revised with the 

weighting factors as he recommended. 

Rice also urged DOE to use his 

recommended CEER equation for both 

variable-speed and single-speed 

portable ACs, which he asserted best 

represents the cooling season 

performance difference between 

variable-speed and single-speed 

portable AC units, as follows: 

The equation suggested by Rice aims 

to produce an efficiency metric that that 

is simply total cooling provided divided 

by total power consumption, utilizing 

the CEER values for each test condition 

as determined in accordance with 

appendix CC. Although DOE agrees that 

the approach of representing efficiency 

as total cooling provided divided by 

total power consumption is appropriate 

for portable ACs, DOE has tentatively 

determined that Rice’s specific 

approach is not. At low and negative 

CEER95 values, the overall CEER is 

unrepresentatively driven to extreme 

high or low values due to the 

asymptotic behavior of the equation. In 

past testing, DOE has observed very 

small or negative CEER95 values in 

single-speed portable ACs, particularly 

in single-duct configurations. DOE has 

observed values as low as ¥3.76 Btu/ 

Wh and has tested at least 11 units with 

values that fall between ¥2 and +2 Btu/ 

Wh, within the range of concern for 

Rice’s approach. Although other 

residential AC products typically 

provide net cooling to the conditioned 

space, two factors can lead to such low 

CEER95 values for portable ACs. Portable 

ACs lose cooling capacity to infiltration 

air and duct heat transfer, both of which 

appendix CC includes provisions to 

measure As shown in Figure 1, under 

the Rice suggested equation, the overall 

CEER can change drastically when 

CEER95 becomes small or negative, 

producing unrealistic values, which is 

not the case for the weighted-average 

approach currently implemented in 

appendix CC. Figure 1 provides an 

example of the impact on overall CEER 

when CEER95 ranges from ¥5 to 5 Btu/ 

Wh for both Rice’s suggested approach 

and the current weighted-average 

appendix CC approach. 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.000</GPH> EP08JN22.001</GPH>

I

ACC95 X 0.2 + ACC83 X 0.8] 

CEERsv = (AECsv + AECr) 

kxt 

1 

CEER = ( 0.27 + 0.73 ) 

CEER95 (CEER83 x CLF83) 

(Rice, No. 11 at pp. 2-3) 
34952 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

For appendix CC1, based on 

comments from Rice and re-examination 

of the current CEER metric, DOE 

developed a new portable AC efficiency 

metric based on a ratio of annual 

cooling provided to annual energy 

consumed. This approach reflects EPCA 

requirements. First, DOE design the test 

procedure to produce test results which 

measure energy efficiency during a 

representative period of use. (42 U.S.C. 

6293(b)(2)) Second, EPCA defines 

energy efficiency as ‘‘the ratio of the 

useful output of services from a 

consumer product to the energy use of 

such product . . .’’ (42 U.S.C. 6291(5)) 

The ratio of annual cooling provided to 

annual energy consumed would best 

reflect the efficiency of portable ACs 

during a full year of use by directly 

accounting for the efficiency of each 

mode in accordance with the number of 

operating hours spent in that mode. The 

two values would be calculated as 

follows. 

The total cooling provided by a 

portable AC over the course of the year, 

in Btu, is equivalent to the average rate 

of cooling provided at each temperature 

condition, in Btu/h, multiplied by the 

number of hours operating at that test 

condition. 

The total annual energy consumption 

of a portable AC, in kilowatt-hours 

(‘‘kWh’’), is equal to the sum of the 

average power consumed in each mode 

multiplied by the amount of time spent 

in that mode. 

DOE tentatively concludes it is 

appropriate to deviate from AHAM 

PAC–1–2022 Draft because at an 83 °F 

outdoor temperature condition, partload, rather than full-load operation, 

reflects an average period of use. AHAM 

PAC–1–2022 Draft includes a term in 

the CEER calculation representing the 

portable AC performance at full load 

with an 83 °F outdoor temperature 

condition. The proposed CEER 

calculations in appendix CC and 

appendix CC1 do not. Although this is 

a test condition in the proposed new 

appendix CC1, part-load operation is 

most representative of portable AC 

operation at the 83 °F outdoor 

temperature condition, based on the 

building load calculation found in AHRI 

210/240. Therefore, DOE is proposing to 

include only low-speed variable-speed 

compressor efficiency or cyclingadjusted single-speed compressor 

efficiency at the 83 °F outdoor 

temperature condition when calculating 

overall CEER in the proposed new 

appendix CC1. 

Appendix CC 

In this NOPR, DOE is not proposing 

to amend the CEER equation for singlespeed portable ACs in appendix CC. 

DOE is proposing to determine variablespeed portable AC efficiency by 

comparing the measured efficiency of 

the variable-speed unit to the efficiency 

of a theoretical single-speed unit of the 

same capacity, taking into account 

efficiency losses due to cycling, 

consistent with the general approach 

from the LG Waiver and Midea Interim 

Waiver, with changes to the CF as 

previously described. 

Appendix CC1 

DOE proposes to create a new 

efficiency metric for portable ACs in 

appendix CC1, AEER, which is equal to 

the total annual cooling delivered 

divided by the total annual energy 

consumption as previously described. 

The proposed equation is as follows: 

Where: 

AEER = annualized energy efficiency ratio of 

the sample unit in Btu/Wh. 

ACC95 and ACC83 = adjusted cooling capacity 

at the 95 °F and 83 °F outdoor 

temperature conditions, respectively, as 

discussed in section III.5.c of this 

document. 

AEC95, AEC83, AECoc, and AECia/om = total 

annual energy consumption attributed to 

all modes representative of the 95 °F 

operating condition, the 83 °F operating 

condition, off-cycle mode, and inactive 

or off mode, respectively, in kWh/year. 

164 = number of annual hours spent in 

cooling mode at the 95 °F operating 

condition, as shown in Table III.2 of this 

document. 

tcm_83 = number of annual hours spent in 

cooling mode at the 83 °F operating 

condition, tDD_83 for dual-duct singlespeed units, tDD_83_Low for dual-duct 

variable-speed units, tSD_83 for singleduct single-speed units, or tSD_Low for 

single-duct variable-speed units, as 

shown in Table III.2 of this document. 

0.001 = kWh/Wh conversion factor for watthours to kilowatt-hours. 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.002</GPH> EP08JN22.003</GPH>

Figure 1: CEER Values at Very Low and Negative CEER9s Using Two 

Approaches 

.. g .... 

CEER_95 

·-·-Rice Equation 

--·~ Weighted Average 

(ACC95 X 164) + (ACC83 X tcm 83) 

AEER = 0.001 x - AEC9 s + AEC83 + AEC0 c + AECia/om 
Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34953 

15The air enthalpy approach entails measuring 

the air flow rate, dry-bulb temperature, and water 

vapor content of air at the inlet and outlet of the 

portable AC. 

DOE requests comment on its 

proposal to adopt in appendix CC the 

PAF-based approach from the LG 

Waiver and Midea Interim Waiver to 

determine variable-speed portable AC 

efficiency, the weighted-average 

approach for the CEER equation, and 

not to change the CEER equation for 

single-speed portable ACs. DOE also 

requests comment on its proposal to 

adopt a new efficiency metric, AEER, to 

represent efficiency as the total annual 

cooling divided by the total annual 

energy consumption in the proposed 

new appendix CC1. 

g. Load-Based Testing 

The current test procedure prescribed 

by ANSI/AHAM PAC–1–2015 does not 

use a load-based test. It measures 

cooling capacity and energy efficiency 

ratio when the portable AC operates 

continuously at fixed indoor and 

outdoor temperature and humidity 

conditions (i.e., a constant-temperature 

test), using an air enthalpy approach.15

In contrast, a load-based test either fixes 

or varies the amount of heat added to 

the indoor test room by the 

reconditioning equipment, while the 

indoor test room temperature is 

permitted to change and is controlled by 

the test unit according to its thermostat 

setting. In the April 2021 RFI, DOE 

sought further comment and 

information on the feasibility and 

applicability of load-based testing for 

portable ACs. 86 FR 20044, 20051. 

NEEA, the Joint Commenters, and 

Rice encouraged the use of load-based 

testing for the portable AC test 

procedure. (NEEA, No. 12 at pp. 2–3; 

Joint Commenters, No. 9 at p. 2; Rice, 

No. 11 at p. 3) NEEA stated a load-based 

test would measure equipment 

performance under conditions that 

better mimic what a unit is likely to 

experience in the field. According to 

NEEA, a load-based test is the best way 

to fully account for the effectiveness of 

controls, cycling effects, and variablespeed performance, which would better 

reflect field performance. (NEEA, No. 12 

at pp. 2–3) The Joint Commenters stated 

a load-based test would further improve 

representativeness for both single-speed 

and variable-speed portable ACs. 

Specifically, they stated that a loadbased test would capture cycling losses 

for single-speed units (as well as for 

variable-speed units to the extent that 

they exhibit cycling behavior) and, for 

variable-speed units, a load-based test 

would eliminate the need to use 

confidential, manufacturer-specified 

compressor speeds for the ‘‘low speed’’ 

test. (Joint Commenters, No. 9 at p. 2) 

DOE continues to recognize the 

challenges associated with 

implementing load-based testing in the 

portable AC test procedure. As 

discussed in the recent final rule for 

room AC test procedures and in the 

April 2021 RFI, DOE expects that a loadbased test would reduce repeatability 

and reproducibility due to current 

limitations in current test chamber 

capabilities—namely, the lack of 

specificity in industry standards 

regarding chamber dimensions and 

reconditioning equipment 

characteristics, which would negatively 

impact the representativeness of the 

results and potentially be unduly 

burdensome. 86 FR 16446, 16466 

(March 29, 2021); 86 FR 20044, 20051. 

The psychrometer chambers used to test 

portable ACs using the air enthalpy 

approach present additional challenges 

for potential load-based testing, because 

they are not well equipped to conduct 

load-based testing. Air enthalpy testing 

equipment and controls systems are not 

designed to impose a cooling load; 

instead, they are designed to maintain 

specified temperature and humidity 

conditions. 

Appendix CC and Appendix CC1 

DOE has not identified approaches to 

mitigate the previously identified 

challenges that are associated with loadbased testing, and commenters provided 

none. DOE does not propose load-based 

testing in either appendix CC or the 

proposed new appendix CC1. 

DOE requests comment on its 

proposal not to prescribe load-based 

testing in appendix CC or the proposed 

new appendix CC1. 

6. Heating Mode 

DOE tentatively maintains its 

previous decision not to require 

measuring energy efficiency in heating 

mode. In the June 2016 Final Rule, DOE 

did not establish an efficiency metric for 

heating mode. 81 FR 35241, 35257. In 

the test procedure NOPR for portable 

ACs published by DOE on February 25, 

2015 (February 2015 NOPR), DOE 

proposed to define heating mode as an 

active mode in which a portable AC has 

activated the main heating function in 

response to the thermostat or 

temperature sensor signal, including 

activating a resistance heater, the 

refrigeration system with a reverse 

refrigerant flow valve, or the fan or 

blower without activation of the 

resistance heater or refrigeration system. 

80 FR 10211, 10217. In the June 2016 

Final Rule, DOE did not establish a 

heating mode test or efficiency metric, 

noting that although some portable ACs 

offer an ‘‘auto mode’’ that allows for 

both cooling and heating mode 

operation depending upon the ambient 

temperature, available data suggested 

that portable ACs are not used for 

heating purposes for a substantial 

amount of time. 81 FR 35241, 35257. In 

the April 2021 RFI, DOE sought usage 

data on portable AC heating mode and 

what portion of portable AC annual 

energy use is in heating mode. 86 FR 

20044, 20049. 

In response to the April 2021 RFI, 

AHAM agreed with DOE’s conclusion in 

the June 2016 Final Rule that portable 

ACs are not used for heating purposes 

for a substantial amount of time and 

urged DOE to not include heating mode 

in the test procedure. AHAM stated that 

there is no need to capture the energy 

usage of heating mode since the energy 

use in heating mode is not significant 

compared to the cooling function. 

AHAM further commented that DOE 

does not have data on the usage of these 

modes and asserted that without such 

data, DOE cannot add heating mode to 

the test procedure. AHAM noted that 

the AHAM PAC–1 test procedure does 

not address heating mode, in alignment 

with the current DOE test procedure. 

(AHAM, No. 8 at p. 3) 

DOE has not identified nor have 

commenters provided any data that 

would allow DOE to draw a different 

conclusion to the use of portable ACs to 

provide heating. Thus, DOE requests 

comment on the tentative determination 

not to establish a heating mode 

efficiency metric in appendix CC and 

proposed new appendix CC1. 

7. Air Circulation Mode 

In air circulation mode, a portable AC 

has activated only the fan or blower and 

the compressor is off. Unlike off-cycle 

mode, air circulation mode is consumerinitiated. In the June 2016 Final Rule, 

due to a lack of usage information for 

this mode, DOE adopted the proposal 

not to measure or allocate annual 

operating hours to air circulation mode. 

81 FR 35241, 35257. 

In the April 2021 RFI, DOE discussed 

comments encouraging the 

incorporation of a ‘‘fan-only mode,’’ in 

which the fan is operating but the 

compressor is off, without 

distinguishing whether the fan 

operation is consumer initiated. DOE 

stated that it expects that the annual 

usage hours and energy consumption of 

fan operation referenced in comments 

could include operation in both offcycle mode, which is currently 

addressed in appendix CC, and a userinitiated air circulation mode. DOE 


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34954 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

16 ‘‘Using Field-Metered Data to Quantify Annual 

Energy Use of Portable Air Conditioners,’’ T. Burke 

et al., Environmental Energy Technologies Division, 

LBNL, December 2014. 

therefore sought further clarification 

and distinction from commenters 

regarding operating hours and energy 

consumption for a user-initiated aircirculation mode, which is not currently 

addressed in appendix CC. 86 FR 20044, 

20050. 

The portable AC field metering study 

conducted by Lawrence Berkeley 

National Laboratory (‘‘LBNL’’) in 2014 16

reported the time only the fan was 

operating. NEEA and the California 

IOUs commented that it did not clearly 

specify whether those hours were spent 

in user-initiated air-circulation mode or 

were off-cycle mode hours in which the 

unit is waiting to respond to the 

thermostat. (NEEA, No. 12 at p. 1; 

California IOUs, No. 10 at p. 5) NEEA 

stated that the LBNL study did indicate 

that the number of hours spent in fanonly mode are significant and 

recommended that DOE further evaluate 

the market distribution of portable ACs 

with fan-only mode and the number of 

hours spent in this mode. (NEEA, No. 12 

at p. 1) 

The California IOUs stated that the 

LBNL study did not determine how 

much time is spent in either of these 

modes or whether there is any 

difference in power consumption 

between fan-only and air-circulation 

modes. They recommended that DOE 

further investigate the market 

distribution of portable ACs and their 

operating hours in user-initiated air 

circulation mode. (California IOUs, No. 

10 at p. 5) 

DOE continues to lack data on annual 

operating hours in air circulation mode. 

DOE is not aware of publicly available 

data, nor has DOE received data from 

commenters regarding consumer use of 

user-initiated air circulation mode. As 

commenters pointed out, the field 

metering study did not differentiate 

between time spent with fan operation 

in air circulation mode versus off-cycle 

mode. When the field study was 

conducted in 2014, DOE investigative 

testing found that all portable ACs in its 

test sample operate the fan in off-cycle 

mode once cooling mode operation 

reduces the ambient temperature below 

the set point, as shown in Table III.9 of 

the portable AC test procedure NOPR 

published on February 25, 2015. 80 FR 

10211, 10232. The hours attributed to 

‘‘fan-only mode’’ likely include 

substantial time in off-cycle mode, in 

addition to any time in the userinitiated air circulation mode because 

fan operation in off-cycle mode was 

likely common in portable ACs at the 

time of the field metering study, based 

on samples analyzed during the 

previous portable AC test procedure 

rulemaking. 80 FR 10212, 10231. 

Therefore, DOE cannot effectively 

utilize the field metering study to 

identify a reliably representative 

number of operating hours in air 

circulation mode and currently is 

unable to justify the additional test 

burden that would be associated with 

testing air circulation mode. Only with 

data for consumer use of air circulation 

mode could DOE determine typical 

operating hours in air circulation mode. 

Appendix CC as proposed and 

proposed new appendix CC1 would 

require testing in off-cycle mode, and 

the energy use in that mode would be 

considered part of the efficiency metric. 

However, DOE is not proposing a test 

for user-initiated air circulation mode. 

DOE requests comment on the 

tentative determination not to dedicate 

distinct operating hours or testing to 

user-initiated air circulation mode in 

appendix CC and proposed new 

appendix CC1. 

8. Dehumidification Mode 

In the April 2021 RFI, DOE discussed 

a comment stating that most portable 

ACs provide a dehumidification feature 

and recommending that DOE further 

investigate its usage and consider 

including dehumidification mode in an 

updated test procedure. DOE sought 

usage data on dehumidification features 

available on portable ACs, including 

prevalence in units on the market, 

annual operating hours, and energy 

consumption associated with this mode. 

86 FR 20044, 20051. 

In response to the April 2021 RFI, 

AHAM stated that there is no need for 

added testing for dehumidification 

mode because it is not a significant 

energy user compared to the cooling 

function and it would unnecessarily 

increase testing burden. Additionally, 

AHAM asserted that absent data on the 

usage of dehumidification mode, DOE 

cannot accurately add it to the test 

procedure. (AHAM, No. 8 at p. 3) 

By contrast, NEEA commented that 

212 out of the 218 products available on 

a major retailer’s website as of January 

2021 had a dehumidification feature. 

NEEA recommended, given the 

prevalence of this feature, that DOE 

further investigate the number of hours 

spent in dehumidification mode and 

include this energy usage in the test 

procedure as warranted. (NEEA, No. 12 

at p. 2) 

DOE is unaware of available 

consumer use data regarding 

dehumidification mode, and the 

presence of a function in and of itself is 

insufficient to indicate the frequency of 

its use. Given the lack of data, DOE is 

unable to address dehumidification 

mode in a representative manner. DOE 

therefore is not proposing test procedure 

provisions regarding dehumidification 

mode in either appendix CC or 

proposed new appendix CC1. 

DOE requests comment on the 

tentative determination not to include 

dehumidification mode in appendix CC 

and proposed new appendix CC1. 

9. Network Connectivity 

Network connectivity implemented in 

portable ACs can enable functions such 

as providing real-time room temperature 

conditions or receiving commands via a 

remote user interface such as a 

smartphone. DOE has observed that 

network connectivity typically operates 

continuously in the background while 

the portable AC performs other 

functions. DOE recognizes that portable 

ACs with network functions are now 

readily available on the market in the 

United States and, in the April 2021 

RFI, requested (1) further comment and 

data on the prevalence of network 

connectivity in portable ACs available 

on the market currently or in the near 

future, (2) available data quantifying the 

power consumption and usage time 

associated with network functionality in 

portable ACs, and (3) information 

regarding the capabilities and attributes 

enabled by network functions (e.g., 

energy savings, demand response, 

convenience functions). 86 FR 20044, 

20049–20050. 

The Joint Commenters and California 

IOUs encouraged DOE to investigate 

network connectivity in the portable AC 

test procedure. (Joint Commenters, No. 

9 at pp. 1–2; California IOUs, No. 10 at 

p. 5) To improve the representativeness 

of the test procedure, the Joint 

Commenters encouraged DOE to 

investigate the power consumed by 

portable ACs in network mode and 

consider incorporating a measurement 

of the standby power consumed when a 

portable AC with network functions is 

connected to a network. (Joint 

Commenters, No. 9 at pp. 1–2) The 

California IOUs stated that network 

connectivity is an important operational 

characteristic. They commented that 

appliance capability to participate in 

demand response events is growing in 

relevance and stated that California and 

other states are looking to demand 

response as an option in their flexible 

demand standards. They further 

commented that, by assessing the effects 

of network connectivity and further 

encouraging manufacturers to produce 

appliances capable of responding to 


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Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34955 

demand response signals, DOE may 

contribute to greater grid reliability. 

(California IOUs, No. 10 at p. 5) 

By contrast, AHAM urged DOE to 

follow the approach it adopted for room 

ACs regarding network connectivity and 

require all network functions to be 

disabled during testing. AHAM revised 

its room AC test procedure to maintain 

consistency with DOE’s position. It 

noted that Section 4.1 of AHAM RAC– 

1–2020, ‘‘Energy Measurement Test 

Procedure for Room Air Conditioners’’ 

now specifies that units shipped with 

communication devices shall be tested 

with the communication device off, and 

not connected to any communication 

network. AHAM asserted that there is 

not yet adequate consumer use data to 

justify including provisions within the 

room AC or portable AC test procedures 

to measure the energy performance of 

network-connected products. AHAM 

further stated it is aware that some 

consumers do not connect their 

network-enabled appliances to use the 

available features. AHAM stated that 

DOE should be mindful that it will take 

time before many new features, designs, 

and technologies lend themselves to a 

‘‘representative average’’ consumer use, 

and urged DOE to ensure that the 

portable AC test procedure does not 

prematurely address new designs which 

may not yet have an average use or be 

in common use, as doing so could stifle 

innovation. (AHAM, No. 8 at p. 4) 

Based on testing and information from 

industry, the total power use 

attributable to network connectivity is 

less than 1 watt and would occur only 

during active hours of operation. DOE 

estimates that including the power 

consumption of network connectivity 

would decrease CEER by 0.1 percent. 

While there are several networkconnected portable ACs on the market 

with varying implementations of 

network functions, DOE is not aware of 

any data available, nor did interested 

parties provide any data, regarding the 

consumer use of network functions. 

Without these data, DOE is unable to 

establish a representative test 

configuration for assessing the energy 

consumption of network functionality 

for portable ACs. Therefore, DOE 

proposes to test portable ACs with 

network functions disabled, if possible, 

unless they cannot be disabled, in 

which case the portable AC would be 

tested with network functions in the 

factory default configuration. 

In this NOPR, DOE proposes to 

specify in both appendix CC and 

proposed new appendix CC1 that, if a 

portable AC has network functions 

disable all network functions 

throughout testing if such settings can 

be disabled by the end-user and the 

product’s user manual provides 

instructions on how to do so. If an enduser cannot disable the network 

functions, or the product’s user manual 

does not provide instruction for 

disabling network settings, test the unit 

with the network settings in the factory 

default configuration for the duration of 

the test. DOE requests comment on this 

proposal. 

10. Infiltration Air, Duct Heat Transfer, 

and Case Heat Transfer 

The portable AC test procedure 

accounts for the effects of heat transfer 

from two sources: (1) infiltration of 

outdoor air into the conditioned space 

(i.e., ‘‘infiltration air’’) and (2) heat 

leakage through the duct surface to the 

conditioned space (i.e., ‘‘duct heat 

transfer’’). In the June 2016 Final Rule, 

DOE considered the effects of heat 

transfer through the outer chassis of the 

portable AC to the conditioned space 

(i.e., ‘‘case heat transfer’’) but did not 

adopt provisions accounting for case 

heat transfer. The reasons for DOE’s 

choice were that case heat transfer has 

a minimal impact on cooling capacity 

and that including measurement of it 

would substantively increase the test 

burden. 81 FR 35241, 35254–35255. 

In the April 2021 RFI, DOE requested: 

(1) any available information or data on 

portable AC infiltration air, duct heat 

transfer, or case heat transfer that may 

improve the representativeness, 

repeatability, or reproducibility of the 

test procedure; (2) input on any industry 

test procedures that measure case heat 

transfer, estimates of test burden 

required to measure it, and data 

quantifying its impact on cooling 

capacity and efficiency; (3) input on any 

less burdensome approaches to address 

case heat transfer than previously 

considered in the June 2016 Final Rule; 

(4) feedback on the impacts of case 

material and case design on case heat 

transfer, and whether certain materials 

or designs soon to be implemented in 

units on the market would result in 

significantly different case heat transfer 

than current designs; and (5) data and 

feedback on any additional available 

data regarding a duct convection heat 

transfer coefficient, and whether the 

current convection heat transfer 

coefficient of 3 British thermal units per 

hour-square foot-degree Fahrenheit 

(‘‘Btu/h-ft2-°F’’) remains representative 

for portable ACs in their typical 

installation and use environments. 86 

FR 20044, 20049. 

NEEA recommended that DOE 

maintain key features in the existing test 

procedure in any revision, specifically 

recommending that DOE continue to 

account for the energy impacts of 

infiltration air and duct heat transfer in 

the portable AC test procedure, which 

NEEA asserted can have significant 

effects on capacity and efficiency and 

therefore are appropriately accounted 

for in the test procedure. (NEEA, No. 12 

at p. 3) 

The Joint Commenters stated that, 

while DOE found the average impact of 

case heat transfer on SACC was about 2 

percent, the impact for individual units 

tested by DOE ranged from 0 to 9.1 

percent. They stated that for some units, 

the current test procedure may be 

significantly overestimating cooling 

capacity and failing to capture design 

differences that may improve efficiency 

by reducing case heat transfer. The Joint 

Commenters encouraged DOE to 

continue to investigate the impact of 

case heat transfer and methods to 

measure case heat transfer to improve 

the representativeness of the test 

procedure. (Joint Commenters, No. 9 at 

p. 1) 

DOE has not received data from 

commenters or otherwise that indicates 

the impacts of case heat transfer have 

become more significant since the 

publication of the June 2016 Final Rule 

and when the supporting analysis was 

conducted. Thus, DOE has tentatively 

determined to continue to exclude case 

heat transfer from the portable AC test 

procedure both in appendix CC and 

appendix CC1 as concluded in the June 

2016 Final Rule. DOE also proposes to 

maintain the incorporation of the energy 

impacts of infiltration air and duct heat 

transfer in the portable AC test 

procedure. 

DOE requests comment on the 

tentative determinations to continue to 

include the energy impacts of 

infiltration air and duct heat transfer 

and exclude case heat transfer in 

appendix CC and proposed new 

appendix CC1. 

C. Representations of Energy Efficiency 

Manufacturers, including importers, 

must use product-specific test 

procedures in 10 CFR part 430 and 

sampling and rounding requirements in 

10 CFR part 429 to determine the 

represented values of energy 

consumption or energy efficiency of a 

basic model. The proposed appendix 

CC1 would require use of AEER for 

representing the energy efficiency of a 

basic model of portable AC, which is 

different from the current metric for 

models tested using appendix CC. DOE 

proposes to add rounding instructions 

consistent with those in Table 1 of 

AHAM PAC–1–2022 Draft in 10 CFR 

429.62 when representing the energy 

efficiency of a basic model tested using 


khammond on DSKJM1Z7X2PROD with PROPOSALS2
34956 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

appendix CC1. DOE also proposes to 

incorporate the AHAM PAC–1–2022 

Draft standard by reference in 10 CFR 

429.4. 

DOE requests comment on the 

proposals to add rounding requirements 

consistent with AHAM PAC–1–2022 

Draft when certifying using appendix 

CC1 in 10 CFR 429.62. DOE also 

requests comment on its proposal to 

incorporate AHAM PAC–1–2022 Draft 

by reference in 10 CFR 429.4. 

D. Test Procedure Costs and 

Harmonization 

1. Test Procedure Costs and Impact 

In this NOPR, DOE proposes to amend 

the existing test procedure for portable 

ACs by amending appendix CC and 

adopting a new appendix CC1. DOE has 

tentatively determined that these 

proposed amendments would not 

impact testing costs as discussed in the 

following paragraphs. 

a. Appendix CC 

DOE proposes to amend appendix CC 

to account for variable-speed portable 

ACs per the LG Waiver and Midea 

Interim Waivers with modifications. As 

discussed, the LG Waiver uses 

manufacturer instructions to achieve a 

fixed full compressor speed, but DOE’s 

proposal uses consumer settings and a 

setpoint of 75 °F to do so. However, the 

modification would not require testing 

at additional conditions or increase the 

test time, as compared to the LG Waiver. 

As such, DOE has tentatively 

determined that the cost per test under 

appendix CC as proposed would be the 

same as the alternate test procedure 

specified in the LG Waiver. Due to the 

modification, the compressor speed 

required by the LG Waiver may differ 

from the compressor speed that would 

be required under the proposed 

amendments to appendix CC. LG would 

need to retest the variable-speed 

portable ACs subject to the LG Waiver 

if DOE amends the test procedure in a 

way that requires testing at a different 

compressor speed. At a minimum, LG 

would need to recertify any such units 

that are already certified, given the 

different full compressor speed and 

cycling factor proposed in appendix CC. 

Furthermore, if DOE adopts the 

amendments proposed in this NOPR, LG 

would be required to update 

representations of its variable-speed 

portable ACs subject to the LG Waiver 

to rely on SACCFull using the full 

compressor speed at the 83 °F test 

condition and to use the proposed new 

CF. These updates would not require 

retesting, only additional calculations 

using data already collected. The Midea 

variable-speed portable ACs subject to 

the existing interim waiver would not 

need to be retested, as there is no 

substantive difference in testing 

between the Midea Interim Waiver and 

the proposed amended appendix CC. 

However, like LG, Midea would be 

required to update representations of 

their variable-speed portable ACs to rely 

on SACCFull using the full compressor 

speed at the 83 °F test condition and to 

use the proposed new CF, if DOE adopts 

the proposed amendments. This update 

would not require retesting, only 

additional calculations using data 

already collected. 

DOE requests comment on its 

characterization of test procedure costs 

and impacts of the proposed 

amendments to appendix CC. 

b. Appendix CC1 

DOE proposes to adopt a new 

appendix CC1 consistent with AHAM 

PAC–1–2022 Draft with modifications. 

For single-speed units, AHAM PAC–1– 

2022 Draft uses the same test conditions 

as the current appendix CC. For 

variable-speed portable ACs, AHAM 

PAC–1–2022 Draft uses the existing 

temperature conditions but has two 

additions. First, for a dual-duct variablespeed portable AC it adds a third test 

condition for full compressor speed at 

the low test condition. Second, it adds 

a specification to set the compressor 

speed to a low speed using 

manufacturer instructions at the lower 

temperature test condition. This 

proposal is consistent with the 

amendments to appendix CC above with 

three exceptions. First, appendix CC1 

also updates the SACC and CEER 

calculations for all units to improve the 

representativeness of the test procedure 

with updated operating hours. Second, 

it adds a single-speed CF. Third, it 

includes adjustments to reflect the 

cooling provided at the 83 °F test 

condition. Under the proposed 

appendix CC1, cycling behavior would 

be factored into the measured values for 

all single-speed units, not just for 

variable-speed units as in appendix CC. 

DOE proposes that testing under 

proposed new appendix CC1 would not 

be required unless and until DOE adopts 

amended energy conservation standards 

that are based on the proposed new 

appendix CC1, and compliance with 

those standards is required. At that 

time, manufacturers would have to, in 

accordance with appendix CC1, re-test 

and re-certify all currently certified 

basic models. 

DOE requests comment on its 

characterization of test procedure costs 

and impacts of the proposed new test 

procedure at appendix CC1. 

2. Harmonization With Industry 

Standards 

DOE’s established practice is to adopt 

relevant industry standards as DOE test 

procedures unless such methodology 

would be unduly burdensome to 

conduct or would not produce test 

results that reflect the energy efficiency, 

energy use, water use (as specified in 

EPCA) or estimated operating costs of 

that product during a representative 

average use cycle or period of use. 

Section 8(c) of appendix A of 10 CFR 

part 430 subpart C. When the industry 

standard does not meet EPCA statutory 

criteria for test procedures, through the 

rulemaking process DOE will establish a 

test procedure reflecting modifications 

to these standards. 

As discussed, appendices CC and CC1 

incorporate by reference ANSI/AHAM 

PAC–1–2015, ANSI/ASHRAE Standard 

37–2009, IEC Standard 62301, ANSI/ 

ASHRAE Standard 41.1–1986, ANSI/ 

ASRHAE Standard 41.6–1994 (RA 

2006), and ANSI/ASHRAE Standard 51– 

1999 with modifications. The industry 

standards DOE proposes to incorporate 

by reference are discussed in further 

detail in section IV.N of this document. 

DOE requests comments on the benefits 

and burdens of the proposed updates 

and additions to industry standards 

referenced in the test procedure for 

portable ACs. 

E. Compliance Date and Waivers 

EPCA prescribes that, if DOE amends 

a test procedure, all representations of 

energy efficiency and energy use, 

including those made on marketing 

materials and product labels, must be 

made in accordance with that amended 

test procedure, beginning 180 days after 

publication of such a test procedure 

final rule in the Federal Register. (42 

U.S.C. 6293(c)(2)) To the extent the 

modified test procedure proposed in 

this document is required only for the 

evaluation and issuance of updated 

efficiency standards, use of the modified 

test procedure, if finalized, would not 

be required until the compliance date of 

updated standards. Section 8(e) of 

appendix A 10 CFR part 430 subpart C. 

If DOE publishes an amended test 

procedure, EPCA provides an allowance 

for individual manufacturers to petition 

DOE for an extension of the 180-day 

period if the manufacturer would 

experience undue hardship in meeting 

the deadline. (42 U.S.C. 6293(c)(3)) To 

receive such an extension, petitions 

must be filed with DOE no later than 60 

days before the end of the 180-day 

period and must detail how the 

manufacturer will experience undue 

hardship. (Id.) 


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17The LG Waiver was in Case No. 2018–004; the 

Midea Interim Waiver was in Case No. 2020–006. 

If DOE amends the test procedure, 

upon the compliance date of test 

procedure provisions of the amended 

test procedure, any waivers that had 

been previously issued and are in effect 

that pertain to issues addressed by such 

provisions are terminated. 10 CFR 

430.27(h)(3). As of the compliance date 

of the amended test procedure, 

recipients of any such waivers would be 

required to test the products subject to 

the waiver according to the amended 

test procedure. This includes LG and 

Midea because the amendments 

proposed in this document pertain to 

issues addressed by waiver and interim 

waiver DOE granted to them.17

IV. Procedural Issues and Regulatory 

Review 

A. Review Under Executive Order 12866 

and 13563 

Executive Order (‘‘E.O.’’) 12866, 

‘‘Regulatory Planning and Review,’’ as 

supplemented and reaffirmed by E.O. 

13563, ‘‘Improving Regulation and 

Regulatory Review, 76 FR 3821 (Jan. 21, 

2011), requires agencies, to the extent 

permitted by law, to (1) propose or 

adopt a regulation only upon a reasoned 

determination that its benefits justify its 

costs (recognizing that some benefits 

and costs are difficult to quantify); (2) 

tailor regulations to impose the least 

burden on society, consistent with 

obtaining regulatory objectives, taking 

into account, among other things, and to 

the extent practicable, the costs of 

cumulative regulations; (3) select, in 

choosing among alternative regulatory 

approaches, those approaches that 

maximize net benefits (including 

potential economic, environmental, 

public health and safety, and other 

advantages; distributive impacts; and 

equity); (4) to the extent feasible, specify 

performance objectives, rather than 

specifying the behavior or manner of 

compliance that regulated entities must 

adopt; and (5) identify and assess 

available alternatives to direct 

regulation, including providing 

economic incentives to encourage the 

desired behavior, such as user fees or 

marketable permits, or providing 

information upon which choices can be 

made by the public. DOE emphasizes as 

well that E.O. 13563 requires agencies to 

use the best available techniques to 

quantify anticipated present and future 

benefits and costs as accurately as 

possible. In its guidance, the Office of 

Information and Regulatory Affairs 

(‘‘OIRA’’) in the Office of Management 

and Budget (‘‘OMB’’) has emphasized 

that such techniques may include 

identifying changing future compliance 

costs that might result from 

technological innovation or anticipated 

behavioral changes. For the reasons 

stated in the preamble, this proposed 

regulatory action is consistent with 

these principles. 

Section 6(a) of E.O. 12866 also 

requires agencies to submit ‘‘significant 

regulatory actions’’ to OIRA for review. 

OIRA has determined that this proposed 

regulatory action does not constitute a 

‘‘significant regulatory action’’ under 

section 3(f) of E.O. 12866. Accordingly, 

this action was not submitted to OIRA 

for review under E.O. 12866. 

B. Review Under the Regulatory 

Flexibility Act 

The Regulatory Flexibility Act (5 

U.S.C. 601 et seq.) requires preparation 

of an initial regulatory flexibility 

analysis (‘‘IRFA’’) for any rule that by 

law must be proposed for public 

comment, unless the agency certifies 

that the rule, if promulgated, will not 

have a significant economic impact on 

a substantial number of small entities. 

As required by E.O. 13272, ‘‘Proper 

Consideration of Small Entities in 

Agency Rulemaking,’’ 67 FR 53461 

(August 16, 2002), DOE published 

procedures and policies on February 19, 

2003, to ensure that the potential 

impacts of its rules on small entities are 

properly considered during the DOE 

rulemaking process. 68 FR 7990. DOE 

has made its procedures and policies 

available on the Office of the General 

Counsel’s website: energy.gov/gc/officegeneral-counsel. 

DOE reviewed this proposed rule 

under the provisions of the Regulatory 

Flexibility Act and the procedures and 

policies published on February 19, 

2003. DOE certifies that the proposed 

rule, if adopted, would not have 

significant economic impact on a 

substantial number of small entities. 

The factual basis of this certification is 

set forth in the following paragraphs. 

Under 42 U.S.C. 6293, EPCA sets forth 

the criteria and procedures DOE must 

follow when prescribing or amending 

test procedures for covered products. 

EPCA requires that any test procedures 

prescribed or amended under this 

section be reasonably designed to 

produce test results which measure 

energy efficiency, energy use or 

estimated annual operating cost of a 

covered product during a representative 

average use cycle or period of use and 

not be unduly burdensome to conduct. 

(42 U.S.C. 6293(b)(3)) 

EPCA also requires that, at least once 

every 7 years, DOE evaluate test 

procedures for each type of covered 

product, including portable ACs, to 

determine whether amended test 

procedures would more accurately or 

fully comply with the requirements for 

the test procedures to not be unduly 

burdensome to conduct and be 

reasonably designed to produce test 

results that reflect energy efficiency, 

energy use, and estimated operating 

costs during a representative average 

use cycle or period of use. (42 U.S.C. 

6293(b)(1)(A)) 

In addition, EPCA requires that DOE 

amend its test procedures for all covered 

products to integrate measures of 

standby mode and off mode energy 

consumption. (42 U.S.C. 6295(gg)(2)(A)) 

Standby mode and off mode energy 

consumption must be integrated into the 

overall energy efficiency, energy 

consumption, or other energy descriptor 

for each covered product unless the 

current test procedures already account 

for standby and off mode energy 

consumption or such integration is 

technically infeasible. If an integrated 

test procedure is technically infeasible, 

DOE must prescribe a separate standby 

mode and off mode energy use test 

procedure for the covered product, if 

technically feasible. (42 U.S.C. 

6295(gg)(2)(A)(ii)) Any such amendment 

must consider the most current versions 

of the IEC Standard 62301 and IEC 

Standard 62087 as applicable. (42 U.S.C. 

6295(gg)(2)(A)) 

DOE is proposing amendments to the 

test procedure for portable ACs in 

satisfaction of its statutory obligations 

under EPCA. Specifically, DOE 

proposes to amend 10 CFR 429.4 

‘‘Materials incorporated by reference’’ 

and 10 CFR 429.62, ‘‘Portable air 

conditioners’’ as follows: 

(7) Incorporate by reference AHAM 

PAC–1–2022 Draft, ‘‘Portable Air 

Conditioners’’ (‘‘AHAM PAC–1–2022 

Draft’’) which includes an industryaccepted method for testing variablespeed portable ACs, in 10 CFR 429.4; 

(8) Add rounding instructions for the 

SACC, CEER, and AEER in 10 CFR 

429.62; 

In addition, DOE proposes to update 

10 CFR 430.2, ‘‘Definitions’’ and 10 CFR 

430.23, ‘‘Test procedures for the 

measurement of energy and water 

consumption’’ as follows: 

(1) Add a definition for the term 

‘‘combined-duct’’ to 10 CFR 430.2; and 

(2) Add requirements to determine 

estimated annual operating cost for 

single-duct and dual-duct variablespeed portable ACs in 10 CFR 430.23. 

DOE also proposes to amend 

appendix CC to subpart B of part 430— 

Uniform Test Method for Measuring the 

Energy Consumption of Portable Air 

Conditioners’’ as follows: 


khammond on DSKJM1Z7X2PROD with PROPOSALS2
34958 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

18 cacertappliances.energy.ca.gov/Pages/Search/ 

AdvancedSearch.aspx. Last accessed November 22, 

2021. 

19The Dun & Bradstreet Hoovers subscription 

login is available online at app.dnbhoovers.com/. 

(3) Add definitions in section 2 for 

‘‘combined-duct,’’ ‘‘single-speed,’’ 

‘‘variable-speed,’’ ‘‘full compressor 

speed (full),’’ ‘‘low compressor speed 

(low),’’ and ‘‘theoretical comparable 

single-speed;’’ 

(4) Divide section 4.1 into two 

sections, 4.1.1 and 4.1.2, for singlespeed and variable-speed portable ACs, 

respectively, and detail configurationspecific cooling mode testing 

requirements for variable-speed portable 

ACs; 

(5) Add a requirement in section 4.1.2 

that, for variable-speed portable ACs, 

the full compressor speed at the 95 °F 

test condition be achieved with user 

controls, and the low compressor speed 

at the 83 °F test condition be achieved 

with manufacturer-provided settings or 

controls; 

(6) Add a cycling factor, CF, in section 

5.5.1; 

(7) Add a requirement to calculate 

SACC with full compressor speed at the 

95 °F test condition and low compressor 

speed at the 83 °F test condition in 

sections 5.1 and 5.2, consistent with the 

LG waiver and Midea interim waiver, 

with an additional requirement for 

variable-speed portable ACs to represent 

SACC with full compressor speed for 

both test conditions, and; 

(8) Add a requirement in section 3.1.2 

that, if a portable AC has network 

functions, all network functions must be 

disabled throughout testing if such 

settings can be disabled by the end-user 

and the product’s user manual provides 

instructions on how to do so. If the 

network functions cannot be disabled by 

the end-user, or the product’s user 

manual does not provide instruction for 

disabling network settings, test the unit 

with the network settings in the factory 

default configuration for the duration of 

the test. 

DOE additionally proposes to adopt a 

new ‘‘appendix CC1 to subpart B of Part 

430—Uniform Test Method for 

Measuring the Energy Consumption of 

Portable Air Conditioners’’ which 

would incorporate by reference AHAM 

PAC–1–2022 Draft and include the 

following changes: 

(9) Incorporate by reference parts of 

AHAM PAC–1–2022 Draft, which 

includes an industry-accepted method 

for testing variable-speed portable ACs; 

(10) Adopt a new efficiency metric, 

AEER, to more representatively 

calculate the efficiency of both variablespeed and single-speed portable ACs; 

(11) Amend the annual operating 

hours; 

(12) Update the SACC and CEER 

equations for both single-speed and 

variable-speed portable ACs; 

(13) Apply a CF to single-speed 

portable AC efficiency; and 

(14) Add a requirement that, if a 

portable AC has network functions, 

disable all network functions 

throughout testing. If the network 

functions cannot be disabled by the enduser, or the product’s user manual does 

not provide instruction for disabling 

network settings, then test the unit with 

the network function settings in the 

factory default configuration for the 

duration of the test. 

Testing according to the proposed 

new appendix CC1, if made final, would 

not be required until compliance is 

required with amended energy 

conservation standards that are based on 

the proposed new appendix CC1, 

should such standards be established. 

The Small Business Administration 

(‘‘SBA’’) considers a business entity to 

be small business, if, together with its 

affiliates, it employs less than a 

threshold number of workers specified 

in 13 CFR part 121. DOE used SBA’s 

small business size standards to 

determine whether any small entities 

would be subject to the requirements of 

the rule. These size standards and codes 

are established by the North American 

Industry Classification System 

(‘‘NAICS’’) and are available at 

www.sba.gov/document/support--tablesize-standards. Portable ACs are 

classified under NAICS 333415, ‘‘AirConditioning and Warm Air Heating 

Equipment and Commercial and 

Industrial Refrigeration Equipment 

Manufacturing.’’ The SBA sets a 

threshold of 1,250 employees or fewer 

for an entity to be considered as a small 

business for this category. 

DOE used the California Energy 

Commission’s Modernized Appliance 

Efficiency Database System 

(‘‘MAEDbS’’) 18 to create a list of 

companies that sell portable ACs 

covered by this rulemaking in the 

United States. DOE consulted publicly 

available data, such as manufacturer 

websites, manufacturer specifications 

and product literature, import and 

export logs, and basic model numbers, 

to identify original equipment 

manufacturers (‘‘OEMs’’) of the products 

covered by this proposed rulemaking. 

DOE relied on public data and 

subscription-based market research 

tools (e.g., Dun & Bradstreet reports) 19

to determine company location, 

headcount, and annual revenue. DOE 

screened out companies that do not 

offer products covered by this proposed 

rulemaking, do not meet the SBA’s 

definition of a ‘‘small business,’’ or are 

foreign-owned and operated. 

DOE identified 17 companies that are 

OEMs of portable ACs. In reviewing the 

17 OEMs, DOE did not identify any 

domestic OEMs that met the SBA 

criteria for a small entity. Given the lack 

of small entities with a direct 

compliance burden, DOE concludes that 

the impacts of the proposed test 

procedure amendments outlined in this 

NOPR would not have a ‘‘significant 

economic impact on a substantial 

number of small entities.’’ DOE will 

transmit the certification and supporting 

statement of factual basis to the Chief 

Counsel for Advocacy of the Small 

Business Administration for review 

under 5 U.S.C. 605(b). 

DOE seeks comment on its findings 

that there are no small businesses that 

are OEMs of portable ACs based in the 

United States. DOE also seeks comment 

on its conclusion that the proposed test 

procedure amendments would not have 

a significant impact on a substantial 

number of small manufacturers. 

C. Review Under the Paperwork 

Reduction Act of 1995 

OMB Control Number 1910–1400, 

Compliance Statement Energy/Water 

Conservation Standards for Appliances, 

is currently valid and assigned to the 

certification reporting requirements 

applicable to covered equipment, 

including portable ACs. 

DOE’s certification and compliance 

activities ensure accurate and 

comprehensive information about the 

energy and water use characteristics of 

covered products and covered 

equipment sold in the United States. 

Manufacturers of all covered products 

and covered equipment must submit a 

certification report before a basic model 

is distributed in commerce, annually 

thereafter, and if the basic model is 

redesigned in such a manner to increase 

the consumption or decrease the 

efficiency of the basic model such that 

the certified rating is no longer 

supported by the test data. Additionally, 

manufacturers must report when 

production of a basic model has ceased 

and is no longer offered for sale as part 

of the next annual certification report 

following such cessation. DOE requires 

the manufacturer of any covered 

product or covered equipment to 

establish, maintain, and retain the 

records of certification reports, of the 

underlying test data for all certification 

testing, and of any other testing 

conducted to satisfy the requirements of 

10 CFR part 429, 10 CFR part 430, and/ 

or 10 CFR part 431. Certification reports 


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provide DOE and consumers with 

comprehensive, up-to date efficiency 

information and support effective 

enforcement. 

The proposal in this NOPR would 

amend the representations of capacity 

for variable-speed portable ACs 

currently subject to test procedure 

waivers. If made final, the proposed 

amendments to appendix CC in this 

NOPR would require use of a new 

metric, i.e., SACCFull. DOE is not 

proposing certification or reporting 

requirements for portable ACs subject to 

appendix CC in this NOPR. Instead, 

DOE may consider proposals to address 

amendments to the certification 

requirements and reporting for portable 

ACs under a separate rulemaking 

regarding appliance and equipment 

certification. DOE will address changes 

to OMB Control Number 1910–1400 at 

that time, as necessary. 

To the extent that the proposed new 

appendix CC1 would necessitate the 

reporting of different or additional 

information, DOE may consider 

proposals to amend the certification 

requirements and reporting for portable 

ACs under a separate rulemaking 

regarding appliance and equipment 

certification. 

Notwithstanding any other provision 

of the law, no person is required to 

respond to, nor shall any person be 

subject to a penalty for failure to comply 

with, a collection of information subject 

to the requirements of the PRA, unless 

that collection of information displays a 

currently valid OMB Control Number. 

D. Review Under the National 

Environmental Policy Act of 1969 

In this NOPR, DOE proposes test 

procedure amendments that it expects 

will be used to develop and implement 

future energy conservation standards for 

portable ACs. DOE has determined that 

this proposed rule falls into a class of 

actions that are categorically excluded 

from review under the National 

Environmental Policy Act of 1969 (42 

U.S.C. 4321 et seq.) and DOE’s 

implementing regulations at 10 CFR part 

1021. Specifically, DOE has determined 

that adopting test procedures for 

measuring energy efficiency of 

consumer products and industrial 

equipment is consistent with activities 

identified in 10 CFR part 1021, 

appendix A to subpart D, A5 and A6. 

Accordingly, neither an environmental 

assessment nor an environmental 

impact statement is required. 

E. Review Under Executive Order 13132 

E.O. 13132, ‘‘Federalism,’’ 64 FR 

43255 (Aug. 4, 1999) imposes certain 

requirements on agencies formulating 

and implementing policies or 

regulations that preempt State law or 

that have federalism implications. The 

E.O. requires agencies to examine the 

constitutional and statutory authority 

supporting any action that would limit 

the policymaking discretion of the 

States and to carefully assess the 

necessity for such actions. The E.O. also 

requires agencies to have an accountable 

process to ensure meaningful and timely 

input by State and local officials in the 

development of regulatory policies that 

have federalism implications. On March 

14, 2000, DOE published a statement of 

policy describing the intergovernmental 

consultation process it will follow in the 

development of such regulations. 65 FR 

13735. DOE has examined this proposed 

rule and has determined that it would 

not have a substantial direct effect on 

the States, on the relationship between 

the national government and the States, 

or on the distribution of power and 

responsibilities among the various 

levels of government. EPCA governs and 

prescribes Federal preemption of State 

regulations as to energy conservation for 

the products that are the subject of this 

proposed rule. States can petition DOE 

for exemption from such preemption to 

the extent, and based on criteria, set 

forth in EPCA. (42 U.S.C. 6297(d)) No 

further action is required by E.O. 13132. 

F. Review Under Executive Order 12988 

Regarding the review of existing 

regulations and the promulgation of 

new regulations, section 3(a) of E.O. 

12988, ‘‘Civil Justice Reform,’’ 61 FR 

4729 (Feb. 7, 1996), imposes on Federal 

agencies the general duty to adhere to 

the following requirements: (1) 

eliminate drafting errors and ambiguity, 

(2) write regulations to minimize 

litigation, (3) provide a clear legal 

standard for affected conduct rather 

than a general standard, and (4) promote 

simplification and burden reduction. 

Section 3(b) of E.O. 12988 specifically 

requires that executive agencies make 

every reasonable effort to ensure that the 

regulation (1) clearly specifies the 

preemptive effect, if any, (2) clearly 

specifies any effect on existing Federal 

law or regulation, (3) provides a clear 

legal standard for affected conduct 

while promoting simplification and 

burden reduction, (4) specifies the 

retroactive effect, if any, (5) adequately 

defines key terms, and (6) addresses 

other important issues affecting clarity 

and general draftsmanship under any 

guidelines issued by the Attorney 

General. Section 3(c) of E.O. 12988 

requires executive agencies to review 

regulations in light of applicable 

standards in sections 3(a) and 3(b) to 

determine whether they are met or it is 

unreasonable to meet one or more of 

them. DOE has completed the required 

review and determined that, to the 

extent permitted by law, the proposed 

rule meets the relevant standards of E.O. 

12988. 

G. Review Under the Unfunded 

Mandates Reform Act of 1995 

Title II of the Unfunded Mandates 

Reform Act of 1995 (‘‘UMRA’’) requires 

each Federal agency to assess the effects 

of Federal regulatory actions on State, 

local, and Tribal governments and the 

private sector. Public Law 104–4, sec. 

201 (codified at 2 U.S.C. 1531). For a 

proposed regulatory action likely to 

result in a rule that may cause the 

expenditure by State, local, and Tribal 

governments, in the aggregate, or by the 

private sector of $100 million or more 

in any one year (adjusted annually for 

inflation), section 202 of UMRA requires 

a Federal agency to publish a written 

statement that estimates the resulting 

costs, benefits, and other effects on the 

national economy. (2 U.S.C. 1532(a), (b)) 

The UMRA also requires a Federal 

agency to develop an effective process 

to permit timely input by elected 

officers of State, local, and Tribal 

governments on a proposed ‘‘significant 

intergovernmental mandate,’’ and 

requires an agency plan for giving notice 

and opportunity for timely input to 

potentially affected small governments 

before establishing any requirements 

that might significantly or uniquely 

affect small governments. On March 18, 

1997, DOE published a statement of 

policy on its process for 

intergovernmental consultation under 

UMRA. 62 FR 12820; also available at 

http://energy.gov/gc/office-generalcounsel. DOE examined this proposed 

rule according to UMRA and its 

statement of policy and determined that 

the rule contains neither an 

intergovernmental mandate, nor a 

mandate that may result in the 

expenditure of $100 million or more in 

any year, so these requirements do not 

apply. 

H. Review Under the Treasury and 

General Government Appropriations 

Act, 1999 

Section 654 of the Treasury and 

General Government Appropriations 

Act, 1999 (Pub. L. 105–277) requires 

Federal agencies to issue a Family 

Policymaking Assessment for any rule 

that may affect family well-being. This 

proposed rule would not have any 

impact on the autonomy or integrity of 

the family as an institution. 

Accordingly, DOE has concluded that it 

is not necessary to prepare a Family 

Policymaking Assessment. 


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I. Review Under Executive Order 12630 

DOE has determined, under E.O. 

12630, ‘‘Governmental Actions and 

Interference with Constitutionally 

Protected Property Rights’’ 53 FR 8859 

(March 18, 1988), that this proposed 

regulation would not result in any 

takings that might require compensation 

under the Fifth Amendment to the U.S. 

Constitution. 

J. Review Under Treasury and General 

Government Appropriations Act, 2001 

Section 515 of the Treasury and 

General Government Appropriations 

Act, 2001 (44 U.S.C. 3516 note) provides 

for agencies to review most 

disseminations of information to the 

public under guidelines established by 

each agency pursuant to general 

guidelines issued by OMB. OMB’s 

guidelines were published at 67 FR 

8452 (Feb. 22, 2002), and DOE’s 

guidelines were published at 67 FR 

62446 (Oct. 7, 2002). Pursuant to OMB 

Memorandum M–19–15, Improving 

Implementation of the Information 

Quality Act (April 24, 2019), DOE 

published updated guidelines which are 

available at www.energy.gov/sites/prod/ 

files/2019/12/f70/DOE%20Final%20

Updated%20IQA%20

Guidelines%20Dec%202019.pdf. DOE 

has reviewed this proposed rule under 

the OMB and DOE guidelines and has 

concluded that it is consistent with 

applicable policies in those guidelines. 

K. Review Under Executive Order 13211 

E.O. 13211, ‘‘Actions Concerning 

Regulations That Significantly Affect 

Energy Supply, Distribution, or Use,’’ 66 

FR 28355 (May 22, 2001), requires 

Federal agencies to prepare and submit 

to OMB, a Statement of Energy Effects 

for any proposed significant energy 

action. A ‘‘significant energy action’’ is 

defined as any action by an agency that 

promulgated or is expected to lead to 

promulgation of a final rule, and that (1) 

is a significant regulatory action under 

E.O. 12866, or any successor order; and 

(2) is likely to have a significant adverse 

effect on the supply, distribution, or use 

of energy; or (3) is designated by the 

Administrator of OIRA as a significant 

energy action. For any proposed 

significant energy action, the agency 

must give a detailed statement of any 

adverse effects on energy supply, 

distribution, or use should the proposal 

be implemented, and of reasonable 

alternatives to the action and their 

expected benefits on energy supply, 

distribution, and use. 

The proposed regulatory action to 

amend the test procedure for measuring 

the energy efficiency of portable ACs is 

not a significant regulatory action under 

E.O. 12866. Moreover, it would not have 

a significant adverse effect on the 

supply, distribution, or use of energy, 

nor has it been designated as a 

significant energy action by the 

Administrator of OIRA. Therefore, it is 

not a significant energy action, and, 

accordingly, DOE has not prepared a 

Statement of Energy Effects. 

L. Review Under Section 32 of the 

Federal Energy Administration Act of 

1974 

Under section 301 of the Department 

of Energy Organization Act (Pub. L. 95– 

91; 42 U.S.C. 7101), DOE must comply 

with section 32 of the Federal Energy 

Administration Act of 1974, as amended 

by the Federal Energy Administration 

Authorization Act of 1977. (15 U.S.C. 

788; ‘‘FEAA’’) Section 32 essentially 

provides in relevant part that, where a 

proposed rule authorizes or requires use 

of commercial standards, the NOPR 

must inform the public of the use and 

background of such standards. In 

addition, section 32(c) requires DOE to 

consult with the Attorney General and 

the Chairman of the Federal Trade 

Commission (‘‘FTC’’) concerning the 

impact of the commercial or industry 

standards on competition. 

The proposed modifications to the 

test procedure for portable ACs would 

incorporate testing methods contained 

in certain sections of the following 

commercial standards: ANSI/AHAM 

PAC–1–2015, AHAM PAC–1–2022 

Draft, ANSI/ASHRAE Standard 37– 

2009, and IEC 62301. DOE has evaluated 

these standards and is unable to 

conclude whether they fully comply 

with the requirements of section 32(b) of 

the FEAA (i.e., whether it was 

developed in a manner that fully 

provides for public participation, 

comment, and review.) DOE will 

consult with both the Attorney General 

and the Chairman of the FTC 

concerning the impact of these test 

procedures on competition, prior to 

prescribing a final rule. 

M. Description of Materials 

Incorporated by Reference 

In this NOPR, DOE proposes to 

incorporate by reference in the proposed 

appendix CC1 the draft test standard 

provided by AHAM, titled, ‘‘Portable 

Air Conditioners AHAM PAC–1–2022 

Draft.’’ AHAM PAC–1–2022 Draft is a 

draft industry test procedure that 

measures portable AC performance in 

cooling mode in a more representative 

manner than the previous iteration, 

ANSI/AHAM PAC–1–2015, and is 

applicable to products sold in North 

America. AHAM PAC–1–2022 Draft 

specifies testing conducted in 

accordance with other industryaccepted test procedures and 

determines energy efficiency metrics for 

various portable AC configurations and 

compressor types (i.e., single-speed and 

variable-speed). The appendix CC1 test 

procedure proposed in this NOPR 

references various sections of AHAM 

PAC–1–2022 Draft that address test 

setup, instrumentation, test conduct, 

calculations, and rounding. 

Copies of AHAM PAC–1–2022 Draft 

may be purchased from the Association 

of Home Appliance Manufacturers at 

1111 19th Street NW, Suite 402, 

Washington, DC 20036, or by going to 

www.aham.org/ht/d/Store/. 

In this NOPR, DOE also proposes to 

incorporate by reference the test 

standard ASHRAE Standard 37–2009, 

titled ‘‘Methods of Testing for Rating 

Electrically Driven Unitary AirConditioning and Heat Pump 

Equipment,’’ (ANSI Approved). ANSI/ 

ASHRAE Standard 37–2009 is an 

industry-accepted test standard 

referenced by ANSI/AHAM PAC–1– 

2015 that defines various uniform 

methods for measuring performance of 

air conditioning and heat pump 

equipment. Although ANSI/AHAM 

PAC–1–2015 references a number of 

sections in ANSI/ASHRAE Standards 

37–2009, the test procedure established 

in this proposed rule additionally 

references one section in ANSI/ 

ASHRAE Standard 37–2009 that 

addresses test duration. 

Copies of ANSI/ASHRAE Standard 

37–2009 can be obtained from the 

American Society of Heating, 

Refrigerating and Air-Conditioning 

Engineers, Inc., at Publication Sales, 

1791 Tullie Circle NE, Atlanta, GA 

30329, or by going to www.ashrae.org. 

In this NOPR, DOE also proposes to 

incorporate by reference the test 

standard ANSI/ASHRAE 51–1999 (also 

called ANSI/AMCA 210), titled 

‘‘Laboratory Methods of Testing Fans for 

Certified Aerodynamic Performance 

Rating.’’ ANSI/ASHRAE 51–1999 is an 

industry-accepted test standard 

referenced by ANSI/ASHRAE Standard 

37–2009 that defines methods for 

measuring the characteristics of air flow. 

Copies of ANSI/ASHRAE 51–1999 

can be obtained from the American 

Society of Heating, Refrigerating and 

Air-Conditioning Engineers, Inc., at 

Publication Sales, 1791 Tullie Circle 

NE, Atlanta, GA 30329, or by going to 

www.ashrae.org. 

In this NOPR, DOE also proposes to 

incorporate by reference the test 

standard ANSI/ASHRAE 41.1–1986, 

titled ‘‘Standard Method for 

Temperature Measurement,’’ (ANSI 


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20 DOE has historically provided a 75-day 

comment period for test procedure NOPRs pursuant 

to the North American Free Trade Agreement, U.S.- 

Canada-Mexico (‘‘NAFTA’’), Dec. 17, 1992, 32 

I.L.M. 289 (1993); the North American Free Trade 

Agreement Implementation Act, Public Law 103– 

182, 107 Stat. 2057 (1993) (codified as amended at 

10 U.S.C.A. 2576) (1993) (‘‘NAFTA Implementation 

Act’’); and E.O. 12889, ‘‘Implementation of the 

North American Free Trade Agreement,’’ 58 FR 

69681 (Dec. 30, 1993). However, on July 1, 2020, 

the Agreement between the United States of 

America, the United Mexican States, and Canada 

(‘‘USMCA’’), Nov. 30, 2018, 134 Stat. 11 (i.e., the 

successor to NAFTA), went into effect, and 

Congress’s action in replacing NAFTA through the 

USMCA Implementation Act, 19 U.S.C. 4501 et seq. 

(2020), implies the repeal of E.O. 12889 and its 75- 

day comment period requirement for technical 

regulations. Thus, the controlling laws are EPCA 

and the USMCA Implementation Act. Consistent 

with EPCA’s public comment period requirements 

for consumer products, the USMCA only requires 

a minimum comment period of 60 days. 

Consequently, DOE now provides a 60-day public 

comment period for test procedure NOPRs. 

Approved). ANSI/ASHRAE 41.1–1986 is 

an industry-accepted test standard 

referenced by ANSI/ASHRAE Standard 

37–2009 that defines a standard method 

for measuring temperature. 

Copies of ANSI/ASHRAE 41.1–1986 

can be obtained from the American 

Society of Heating, Refrigerating and 

Air-Conditioning Engineers, Inc., at 

Publication Sales, 1791 Tullie Circle 

NE, Atlanta, GA 30329, or by going to 

www.ashrae.org. 

In this NOPR, DOE also proposes to 

incorporate by reference the test 

standard ANSI/ASHRAE 41.6–1994 (RA 

2006), titled ‘‘Standard Method for 

Measurement of Moist Air Properties,’’ 

(ANSI Approved). ANSI/ASHRAE 41.6– 

1994 (RA 2006) is an industry-accepted 

test standard referenced by ANSI/ 

ASHRAE Standard 37–2009 that defines 

a standard method for measuring moist 

air properties, including humidity and 

wet-bulb temperature. 

Copies of ANSI/ASHRAE 41.6–1994 

(RA 2006) can be obtained from the 

American Society of Heating, 

Refrigerating and Air-Conditioning 

Engineers, Inc., at Publication Sales, 

1791 Tullie Circle NE, Atlanta, GA 

30329, or by going to www.ashrae.org. 

In this NOPR, DOE also proposes to 

incorporate by reference the test 

standard IEC 62301, titled ‘‘Household 

electrical appliances—Measurement of 

standby power,’’ (Edition 2.0, 2011–01). 

IEC 62301 is an industry-accepted test 

standard that sets a standardized 

method to measure the standby power 

of household and similar electrical 

appliances. IEC 62301 includes details 

regarding test set-up, test conditions, 

and stability requirements that are 

necessary to ensure consistent and 

repeatable standby and off-mode test 

results. 

Copies of IEC 62301 can be obtained 

from the American National Standards 

Institute at 25 W 43rd Street, 4th Floor, 

New York, or by going to 

webstore.ansi.org. 

V. Public Participation 

A. Participation in the Webinar 

The time and date of the webinar 

meeting are listed in the DATES section 

at the beginning of this document. 

Webinar registration information, 

participant instructions, and 

information about the functions 

available to webinar participants will be 

published on DOE’s website: 

www1.eere.energy.gov/buildings/ 

appliance_standards/ 

standards.aspx?productid=65. 

Participants are responsible for ensuring 

their systems are compatible with the 

webinar software. 

B. Procedure for Submitting Prepared 

General Statements for Distribution 

Any person who has an interest in the 

topics addressed in this proposed 

rulemaking, or who is representative of 

a group or class of persons that has an 

interest in these issues, may request an 

opportunity to make an oral 

presentation at the webinar. Such 

persons may submit to 

ApplianceStandardsQuestions@

ee.doe.gov. Persons who wish to speak 

should include with their request a 

computer file in WordPerfect, Microsoft 

Word, PDF, or text (ASCII) file format 

that briefly describes the nature of their 

interest in this proposed rulemaking 

and the topics they wish to discuss. 

Such persons should also provide a 

daytime telephone number where they 

can be reached. 

C. Conduct of the Webinar 

DOE will designate a DOE official to 

preside at the webinar and may also use 

a professional facilitator to aid 

discussion. The meeting will not be a 

judicial or evidentiary-type public 

hearing, but DOE will conduct it in 

accordance with section 336 of EPCA 

(42 U.S.C. 6306). A court reporter will 

be present to record the proceedings and 

prepare a transcript. DOE reserves the 

right to schedule the order of 

presentations and to establish the 

procedures governing the conduct of the 

webinar. There shall not be discussion 

of proprietary information, costs or 

prices, market share, or other 

commercial matters regulated by U.S. 

anti-trust laws. After the webinar/public 

meeting and until the end of the 

comment period, interested parties may 

submit further comments on the 

proceedings and any aspect of the 

proposed rulemaking. 

The webinar will be conducted in an 

informal, conference style. DOE will 

present a general overview of the topics 

addressed in this proposed rulemaking, 

allow time for prepared general 

statements by participants, and 

encourage all interested parties to share 

their views on issues affecting this 

proposed rulemaking. Each participant 

will be allowed to make a general 

statement (within time limits 

determined by DOE), before the 

discussion of specific topics. DOE will 

permit, as time permits, other 

participants to comment briefly on any 

general statements. 

At the end of all prepared statements 

on a topic, DOE will permit participants 

to clarify their statements briefly. 

Participants should be prepared to 

answer questions by DOE and by other 

participants concerning these issues. 

DOE representatives may also ask 

questions of participants concerning 

other matters relevant to this 

rulemaking. The official conducting the 

webinar will accept additional 

comments or questions from those 

attending, as time permits. The 

presiding official will announce any 

further procedural rules or modification 

of the above procedures that may be 

needed for the proper conduct of the 

webinar/public meeting. 

A transcript of the webinar/public 

meeting will be included in the docket, 

which can be viewed as described in the 

Docket section at the beginning of this 

proposed rule. In addition, any person 

may buy a copy of the transcript from 

the transcribing reporter. 

D. Submission of Comments 

DOE will accept comments, data, and 

information regarding this proposed 

rule no later than the date provided in 

the DATES section at the beginning of 

this proposed rule.20 Interested parties 

may submit comments using any of the 

methods described in the ADDRESSES

section at the beginning of this 

document. 

Submitting comments via http://

www.regulations.gov. The 

www.regulations.gov web page will 

require you to provide your name and 

contact information. Your contact 

information will be viewable to DOE 

Building Technologies staff only. Your 

contact information will not be publicly 

viewable except for your first and last 

names, organization name (if any), and 

submitter representative name (if any). 

If your comment is not processed 

properly because of technical 

difficulties, DOE will use this 

information to contact you. If DOE 

cannot read your comment due to 

technical difficulties and cannot contact 


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you for clarification, DOE may not be 

able to consider your comment. 

However, your contact information 

will be publicly viewable if you include 

it in the comment or in any documents 

attached to your comment. Any 

information that you do not want to be 

publicly viewable should not be 

included in your comment, nor in any 

document attached to your comment. 

Persons viewing comments will see only 

first and last names, organization 

names, correspondence containing 

comments, and any documents 

submitted with the comments. 

Do not submit to www.regulations.gov 

information for which disclosure is 

restricted by statute, such as trade 

secrets and commercial or financial 

information (hereinafter referred to as 

Confidential Business Information 

(‘‘CBI’’)). Comments submitted through 

www.regulations.gov cannot be claimed 

as CBI. Comments received through the 

website will waive any CBI claims for 

the information submitted. For 

information on submitting CBI, see the 

Confidential Business Information 

section. 

DOE processes submissions made 

through www.regulations.gov before 

posting. Normally, comments will be 

posted within a few days of being 

submitted. However, if large volumes of 

comments are being processed 

simultaneously, your comment may not 

be viewable for up to several weeks. 

Please keep the comment tracking 

number that www.regulations.gov 

provides after you have successfully 

uploaded your comment. 

Submitting comments via email, hand 

delivery/courier, or postal mail. 

Comments and documents submitted 

via email, hand delivery/courier, or 

postal mail also will be posted to 

www.regulations.gov. If you do not want 

your personal contact information to be 

publicly viewable, do not include it in 

your comment or any accompanying 

documents. Instead, provide your 

contact information on a cover letter. 

Include your first and last names, email 

address, telephone number, and 

optional mailing address. The cover 

letter will not be publicly viewable as 

long as it does not include any 

comments. 

Include contact information each time 

you submit comments, data, documents, 

and other information to DOE. If you 

submit via postal mail or hand delivery/ 

courier, please provide all items on a 

CD, if feasible, in which case it is not 

necessary to submit printed copies. No 

faxes will be accepted. 

Comments, data, and other 

information submitted to DOE 

electronically should be provided in 

PDF (preferred), Microsoft Word or 

Excel, or text (ASCII) file format. 

Provide documents that are not secured, 

written in English and free of any 

defects or viruses. Documents should 

not contain special characters or any 

form of encryption and, if possible, they 

should carry the electronic signature of 

the author. 

Campaign form letters. Please submit 

campaign form letters by the originating 

organization in batches of between 50 to 

500 form letters per PDF or as one form 

letter with a list of supporters’ names 

compiled into one or more PDFs. This 

reduces comment processing and 

posting time. 

Confidential Business Information. 

Pursuant to 10 CFR 1004.11, any person 

submitting information that he or she 

believes to be confidential and exempt 

by law from public disclosure should 

submit via email two well-marked 

copies: one copy of the document 

marked confidential including all the 

information believed to be confidential, 

and one copy of the document marked 

non-confidential with the information 

believed to be confidential deleted. DOE 

will make its own determination about 

the confidential status of the 

information and treat it according to its 

determination. 

It is DOE’s policy that all comments 

may be included in the public docket, 

without change and as received, 

including any personal information 

provided in the comments (except 

information deemed to be exempt from 

public disclosure). 

E. Issues on Which DOE Seeks Comment 

Although DOE welcomes comments 

on any aspect of this proposal, DOE is 

particularly interested in receiving 

comments and views of interested 

parties concerning the following issues: 

(1) DOE requests comment on the 

proposal to incorporate by reference 

AHAM PAC–1–2022 Draft in a new 

appendix CC1, with modifications to 

address comparability and 

representativeness. 

(2) DOE requests comment on the 

proposal to amend the operating hours 

in the proposed new appendix CC1 as 

shown in Table III.2 above. 

(3) DOE requests comment on the 

proposal to adopt in the new appendix 

CC1 the requirement that portable ACs 

able to operate as both a single-duct and 

dual-duct portable AC, as distributed in 

commerce by the manufacturer, must be 

tested and rated for both duct 

configurations. 

(4) DOE requests comment on the 

proposal to add variable-speed test 

conditions in appendix CC consistent 

with the LG Waiver and Midea Interim 

Waiver while otherwise retaining the 

current test conditions, and to adopt the 

AHAM PAC–1–2022 Draft test 

conditions in the proposed new 

appendix CC1. 

(5) DOE requests comment on the 

proposal to add compressor speed 

requirements in appendix CC consistent 

with the Midea Interim Waiver, and to 

adopt the AHAM PAC–1–2022 Draft 

compressor speed requirements in the 

proposed new appendix CC1. 

(6) DOE requests comment on the 

proposal to maintain in the revised 

appendix CC the current SACC 

calculation for single-speed units and to 

adopt a SACC calculation consistent 

with the test procedure waivers for 

variable-speed units for the purposes of 

determining CEER. DOE also requests 

comment on the proposal to require 

manufacturers of variable-speed units to 

represent cooling capacity using a new 

metric, SACCFull, based on full load 

performance at the low temperature 

condition. DOE further requests 

comment on the proposal to adopt an 

updated SACC calculation for singlespeed units and variable-speed units 

that accounts for reduced cooling load 

at the 83 °F test condition in the 

proposed new appendix CC1. 

(7) DOE requests comment on the 

proposed weighting factors in the 

proposed new appendix CC1 (0.144 for 

the 95 °F test condition and 0.856 for the 

83 °F test condition). 

(8) DOE requests comment on the 

proposal to adopt a CF of 0.82 based on 

DOE’s investigative testing, in appendix 

CC and in the proposed new appendix 

CC1. 

(9) DOE requests comment on its 

proposal not to prescribe load-based 

testing in appendix CC or the proposed 

new appendix CC1. 

(10) DOE requests comment on the 

tentative determination not to dedicate 

distinct operating hours or testing to 

user-initiated air circulation mode in 

appendix CC and proposed new 

appendix CC1. 

(11) DOE requests comment on the 

tentative determination not to include 

dehumidification mode in appendix CC 

and proposed new appendix CC1. 

(12) DOE requests comment on this 

proposal. 

(13) DOE requests comment on the 

tentative determinations to continue to 

include the energy impacts of 

infiltration air and duct heat transfer 

and exclude case heat transfer in 

appendix CC and proposed new 

appendix CC1. 

(14) DOE requests comment on its 

characterization of test procedure costs 

and impacts of the proposed 

amendments to appendix CC. 


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(15) DOE requests comment on its 

characterization of test procedure costs 

and impacts of the proposed new test 

procedure at appendix CC1. 

(16) DOE seeks comment on its 

findings that there are no small 

businesses that are OEMs of portable 

ACs based in the United States. DOE 

also seeks comment on its conclusion 

that the proposed test procedure 

amendments would not have a 

significant impact on a substantial 

number of small manufacturers. 

VI. Approval of the Office of the 

Secretary 

The Secretary of Energy has approved 

publication of this notice of proposed 

rulemaking and request for comment. 

List of Subjects 

10 CFR Part 429 

Administrative practice and 

procedure, Confidential business 

information, Energy conservation, 

Household appliances, Incorporation by 

reference, Reporting and recordkeeping 

requirements. 

10 CFR Part 430 

Administrative practice and 

procedure, Confidential business 

information, Energy conservation, 

Household appliances, Imports, 

Incorporation by reference, 

Intergovernmental relations, Small 

businesses. 

Signing Authority 

This document of the Department of 

Energy was signed on May 23, 2022, by 

Kelly J. Speakes-Backman, Principal 

Deputy Assistant Secretary for Energy 

Efficiency and Renewable Energy, 

pursuant to delegated authority from the 

Secretary of Energy. That document 

with the original signature and date is 

maintained by DOE. For administrative 

purposes only, and in compliance with 

requirements of the Office of the Federal 

Register, the undersigned DOE Federal 

Register Liaison Officer has been 

authorized to sign and submit the 

document in electronic format for 

publication, as an official document of 

the Department of Energy. This 

administrative process in no way alters 

the legal effect of this document upon 

publication in the Federal Register. 

Signed in Washington, DC, on May 24, 

2022. 

Treena V. Garrett, 

Federal Register Liaison Officer, U.S. 

Department of Energy. 

For the reasons stated in the 

preamble, DOE is proposing to amend 

parts 429 and 430 of Chapter II of Title 

10, Code of Federal Regulations as set 

forth below: 

PART 429—CERTIFICATION, 

COMPLIANCE, AND ENFORCEMENT 

FOR CONSUMER PRODUCTS AND 

COMMERCIAL AND INDUSTRIAL 

EQUIPMENT 

■ 1. The authority citation for part 429 

continues to read as follows: 

Authority: 42 U.S.C. 6291–6317; 28 U.S.C. 

2461 note. 

■ 2. Section 429.4 is amended by adding 

paragraph (b)(3) to read as follows: 

§ 429.4 Materials incorporated by 

reference. 

* * * * * 

(b) * * * 

(3) ANSI/AHAM PAC–1–2022 Draft, 

(‘‘AHAM PAC–1–2022 Draft’’), Portable 

Air Conditioners, IBR approved for 

§ 429.62. 

* * * * * 

■ 3. Section 429.62 is amended by 

revising paragraphs (a)(3) and (4) to read 

as follows: 

§ 429.62 Portable air conditioners. 

* * * * * 

(a) * * * 

(3) The value of seasonally adjusted 

cooling capacity of a basic model must 

be the mean of the seasonally adjusted 

cooling capacities for each tested unit of 

the basic model. When using appendix 

CC of subpart B of part 430, round the 

mean seasonally adjusted cooling 

capacity value to the nearest 50, 100, 

200, or 500 Btu/h, depending on the 

magnitude of the calculated seasonally 

adjusted cooling capacity, in accordance 

with Table 1 of ANSI/AHAM PAC–1– 

2015, (incorporated by reference, see 

§ 429.4), ‘‘Multiples for reporting Dual 

Duct Cooling Capacity, Single Duct 

Cooling Capacity, Spot Cooling 

Capacity, Water Cooled Condenser 

Capacity and Power Input Ratings’’. 

When using appendix CC1 of subpart B 

of part 430, round to the nearest 50, 100, 

200, or 500 Btu/h, depending on the 

magnitude of the calculated seasonally 

adjusted cooling capacity, in accordance 

with Table 1 of AHAM PAC–1–2022 

Draft, (incorporated by reference, see 

§ 429.4), ‘‘Multiples for reporting Dual 

Duct Cooling Capacity, Single Duct 

Cooling Capacity, Spot Cooling 

Capacity, Water Cooled Condenser 

Capacity and Power Input Ratings’’. 

(4) The represented value of 

combined energy efficiency ratio or 

annualized energy efficiency ratio of a 

basic model must be rounded to the 

nearest 0.1 Btu/Wh. 

* * * * * 

PART 430—ENERGY CONSERVATION 

PROGRAM FOR CONSUMER 

PRODUCTS 

■ 4. The authority citation for part 430 

continues to read as follows: 

Authority: 42 U.S.C. 6291–6309; 28 U.S.C. 

2461 note. 

■ 5. Section 430.2 is amended by adding 

in alphabetical order the definition for 

‘‘Combined-duct’’ to read as follows: 

§ 430.2 Definitions. 

* * * * * 

Combined-duct means, for a portable 

air conditioner, the condenser inlet and 

outlet air streams flow through separate 

ducts housed in a single duct structure. 

* * * * * 

■ 6. Section 430.3 is amended by: 

■ a. Adding paragraph (b)(5); 

■ b. Revising paragraph (g)(3) and (5); c. 

Redesignating paragraphs (g)(11) 

through (18) as paragraphs (g)(12) 

through(19); 

■ d. Adding new paragraphs (g)(11) and 

(i)(7); 

■ e. Revising paragraph (o)(6). 

The additions and revisions to read as 

follows: 

§ 430.3 Materials incorporated by 

reference. 

* * * * * 

(b) * * * 

(5) ANSI/ASHRAE 51–1999/ANSI/ 

AMCA 210–99 (‘‘ANSI/ASHRAE 51’’), 

Laboratory Methods of Testing Fans for 

Certified Aerodynamic Performance 

Rating, ANSI approved December 2, 

1999; ASHRAE approved June 23, 1999; 

IBR approved for appendices CC and 

CC1 to subpart B. 

* * * * * 

(g) * * * 

(3) ANSI/ASHRAE Standard 37–2009, 

(‘‘ASHRAE 37–2009’’), Methods of 

Testing for Rating Electrically Driven 

Unitary Air-Conditioning and Heat 

Pump Equipment, ANSI approved June 

25, 2009, IBR approved for appendices 

AA, CC, and CC1 to subpart B. 

* * * * * 

(5) ANSI/ASHRAE 41.1–1986 

(Reaffirmed 2006), Standard Method for 

Temperature Measurement, approved 

February 18, 1987, IBR approved for 

appendices E, AA, and CC1 to subpart 

B. 

* * * * * 

(11) ANSI/ASHRAE Standard 41.6– 

1994 (RA 2006), (‘‘ASHRAE 41.6– 

1994’’), Standard Method for 

Measurement of Moist Air Properties, 

ANSI reaffirmed on January 27, 2006, 

IBR approved for appendix CC1 to 

subpart B. 

* * * * * 


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(i) * * * 

(7) AHAM PAC–1–2022 Draft, 

(‘‘AHAM PAC–1–2022 Draft’’), Portable 

Air Conditioners, IBR approved for 

appendix CC1 to subpart B. 

* * * * * 

(o) * * * 

(6) IEC 62301 (‘‘IEC 62301’’), 

Household electrical appliances— 

Measurement of standby power, 

(Edition 2.0, 2011–01), IBR approved for 

appendices C1, D1, D2, F, G, H, I, J2, N, 

O, P, Q, X, X1, Y, Z, BB, CC, and CC1 

to subpart B. 

* * * * * 

■ 7. Section 430.23 is amended by 

revising paragraph (dd) to read as 

follows: 

§ 430.23 Test procedures for the 

measurement of energy and water 

consumption. 

* * * * * 

(dd) Portable air conditioners. 

(1) When using appendix CC of this 

subpart, measure the seasonally 

adjusted cooling capacity, in British 

thermal units per hour (Btu/h), and the 

combined energy efficiency ratio, in 

British thermal units per watt-hour 

(Btu/Wh) in accordance with sections 

5.2 and 5.4 of appendix CC of this 

subpart, respectively. When using 

appendix CC1 of this subpart, measure 

the seasonally adjusted cooling 

capacity, in British thermal units per 

hour (Btu/h), and the combined energy 

efficiency ratio, in British thermal units 

per watt-hour (Btu/Wh) in accordance 

with sections 5.2 and 5.4, respectively, 

of appendix CC1 of this subpart. 

(2) When using appendix CC of this 

subpart, determine the estimated annual 

operating cost for portable air 

conditioners, in dollars per year and 

rounded to the nearest whole number, 

by multiplying a representative average 

unit cost of electrical energy in dollars 

per kilowatt-hour as provided by the 

Secretary by the total annual energy 

consumption, determined as follows: 

(i) For dual-duct single-speed portable 

air conditioners, the sum of AECDD_95 

multiplied by 0.2, AECDD_83 

multiplied by 0.8, and AECT as 

measured in accordance with section 

5.3 of appendix CC of this subpart. 

(ii) For single-duct single-speed 

portable air conditioners, the sum of 

AECSD and AECT as measured in 

accordance with section 5.3 of appendix 

CC of this subpart. 

(iii) For dual-duct variable-speed 

portable air conditioners the overall 

sum of 

(A) The sum of AECDD_95_Full and 

AECia/om, multiplied by 0.2, and 

(B) The sum of AECDD_83_Low and 

AECia/om, multiplied by 0.8, as measured 

in accordance with section 5.3 of 

appendix CC of this subpart. 

(iv) For single-duct variable-speed 

portable air conditioners, the overall 

sum of 

(A) The sum of AECSD_Full and 

AECia/om, multiplied by 0.2, and 

(B) The sum of AECSD_Low and 

AECia/om, multiplied by 0.8, as 

measured in accordance with section 

5.3 of appendix CC of this subpart. 

(3) When using appendix CC1 of this 

subpart, determine the estimated annual 

operating cost for portable air 

conditioners, in dollars per year and 

rounded to the nearest whole number, 

by multiplying a representative average 

unit cost of electrical energy in dollars 

per kilowatt-hour as provided by the 

Secretary by the total annual energy 

consumption. The total annual energy 

consumption is the sum of AEC95, 

AEC83, AECoc, and AECia, as measured 

in accordance with section 5.3 of 

appendix CC1 of this subpart. 

■ 8. Appendix CC to subpart B of part 

430 is amended by: 

■ a. Adding an introductory note; 

■ b. Adding section 0; 

■ c. Revising sections 2, 3.1.1, 3.1.1.1, 

3.1.1.6, 3.1.2, 3.2, 3.2.1, 3.2.2.2, 3.2.3, 

4.1, 4.1.1, and 4.1.2, ; 

■ d. Adding sections 4.1.3 and 4.1.4; 

■ e. Revising sections 4.3 and 5.1 ; 

■ f. Adding sections 5.1.1 and 5.1.2; 

■ g. Revising section 5.2; 

■ h. Adding section 5.2.1; 

■ i. Revising sections 5.3 and 5.4; 

■ j. Adding sections 5.4.1, 5.4.2 and 

5.4.2.1; and 

■ k. Adding sections 5.5, 5.5.1, 5.5.2, 

5.5.3, 5.5.4, 5.5.5, 5.5.6, 5.5.7, and 5.5.8. 

The additions and revisions read as 

follows: 

Appendix CC to Subpart B of Part 430— 

Uniform Test Method for Measuring the 

Energy Consumption of Portable Air 

Conditioners 

Note: Manufacturers must use the results of 

testing under this appendix to determine 

compliance with the standard at § 430.32(cc) 

with which compliance is required as of 

January 10, 2025. Before [Date 180 days 

following publication of the final rule] 

representations must be based upon results 

generated either under this appendix or 

under this appendix as it appeared in the 10 

CFR parts 200–499 edition revised as of 

January 1, 2021. 

Manufacturers must use the results of 

testing under appendix CC1 to 

determine compliance with any 

standards that amend the portable air 

conditioners standard at § 430.32(cc) 

with which compliance is required on 

January 10, 2025. Any representations 

related to energy also must be made in 

accordance with the appendix that 

applies (i.e., this appendix CC or 

appendix CC1). Manufacturers may use 

appendix CC1 to certify compliance 

with any amended standards prior to 

the applicable compliance date for those 

standards. 

0. Incorporation by Reference 

DOE incorporated by reference in 

§ 430.3 the entire standard for ANSI/ 

AHAM PAC–1–2015, ANSI/ASHRAE 

Standard 37–2009, ANSI/ASHRAE 51, 

and IEC 62301; however, only 

enumerated provisions of those 

documents apply to this appendix as 

follows. Treat ‘‘should’’ in IEC 62301 as 

mandatory.0.1 ANSI/AHAM PAC–1– 

2015 

(a) Section 4 ‘‘Definitions,’’ as 

specified in section 3.1.1 of this 

appendix, except for AHAM’s definition 

for ‘‘Portable Air Conditioner’’; 

(b) Section 7 ‘‘Tests,’’ as specified in 

section 3.1.1, 3.1.1.3, 3.1.1.4, 4.1.1, and 

4.1.2 of this appendix. 

0.2 ANSI/ASHRAE Standard 37–2009 

(a) Section 5.4 ‘‘Electrical 

Instruments,’’ as specified in sections 

4.1.1 and 4.1.2 of this appendix; 

(b) Section 7.3 ‘‘Indoor and Outdoor 

Air Enthalpy Methods,’’ as specified in 

section 4.1.1 of this appendix; 

(c) Section 7.6 ‘‘Outdoor Liquid Coil 

Method,’’ as specified in sections 4.1.1 

and 4.1.2 of this appendix; 

(d) Section 7.7 ‘‘Airflow Rate 

Measurement,’’ as specified in sections 

4.1.1 and 4.1.2 of this appendix; 

(e) Section 8.7 ‘‘Test Procedure for 

Cooling Capacity Tests,’’ as specified in 

sections 4.1.1 and 4.1.2 of this 

appendix; 

(f) Section 9.2 ‘‘Test Tolerances,’’ as 

specified in sections 4.1.1 and 4.1.2 of 

this appendix; 

(g) Section 11.1 ‘‘Symbols Used In 

Equations,’’ as specified in sections 

4.1.1 and 4.1.2 of this appendix. 

0.3 IEC 62301 (Edition 2.0, 2011–01) 

(a) Paragraph 5.2 ‘‘Preparation of 

product,’’ as specified in section 3.2.1 of 

this appendix; 

(b) Paragraph 4.3.2 ‘‘Supply voltage 

waveform,’’ as specified in section 

3.2.2.2 of this appendix; 

(c) Paragraph 4.4 ‘‘Power measuring 

instruments,’’ as specified in section 

3.2.3 of this appendix; 

(d) Annex D, ‘‘Determination of 

Uncertainty of Measurement,’’ as 

specified in sections 3.2.1, 3.2.2.2, and 

3.2.3 of this appendix; 

(e) Paragraph 4.2 ‘‘Test room,’’ as 

specified in section 3.2.4 of this 

appendix; 

(f) Paragraph 5.1, ‘‘General,’’ Note 1, 

as specified in section 4.3 of this 

appendix; 


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(g) Paragraph 5.3.2 ‘‘Sampling 

method,’’ as specified in section 4.3 of 

this appendix. 

0.4 ANSI/ASHRAE 51 

(a) Figure 12 and Notes, ‘‘Outlet 

Chamber Setup-Multiple Nozzles in 

Chamber’’ as specified in section 4.1.1 

of this appendix. 

(b) [Reserved] 

When there is a conflict, the language 

of this appendix takes precedence over 

those documents. Any subsequent 

amendment to a referenced document 

by the standard-setting organization will 

not affect the test procedure in this 

appendix, unless and until DOE amends 

the test procedure. Material is 

incorporated as it exists on the date of 

the approval, and any change to the 

reference to the material will be 

published in the Federal Register. 

* * * * * 

2. Definitions 

Combined-duct means the condenser 

inlet and outlet air streams flow through 

separate ducts housed in a single duct 

structure. 

Combined energy efficiency ratio 

means the energy efficiency of a 

portable air conditioner as measured in 

accordance with this test procedure in 

Btu per watt-hours (Btu/Wh) and 

determined in section 5.4 of this 

appendix. 

Cooling mode means a mode in which 

a portable air conditioner either has 

activated the main cooling function 

according to the thermostat or 

temperature sensor signal, including 

activating the refrigeration system, or 

has activated the fan or blower without 

activating the refrigeration system. 

Dual-duct means drawing some or all 

of the condenser inlet air from outside 

the conditioned space through a duct 

attached to an adjustable window 

bracket, potentially drawing additional 

condenser inlet air from the conditioned 

space, and discharging the condenser 

outlet air outside the conditioned space 

by means of a separate duct attached to 

an adjustable window bracket. 

Full compressor speed (full) means 

the compressor speed at which the unit 

operates at full load test conditions, 

when using user controls with a unit 

thermostat setpoint of 75 °F to achieve 

maximum cooling capacity. 

Inactive mode means a standby mode 

that facilitates the activation of an active 

mode or off-cycle mode by remote 

switch (including remote control), 

internal sensor, or timer, or that 

provides continuous status display. 

Low compressor speed (low) means 

the compressor speed specified by the 

manufacturer, at which the unit 

operates at low load test conditions (i.e., 

Test Condition C and Test Condition E 

in Table 2 of this appendix, for a dualduct and single-duct portable air 

conditioner, respectively), such that the 

measured cooling capacity at this speed 

is no less than 50 percent and no greater 

than 60 percent of the measured cooling 

capacity with the full compressor speed 

at full load test conditioners (i.e., Test 

Condition A and Test Condition C in 

Table 2 of this appendix, for a dual-duct 

and single-duct portable air conditioner, 

respectively). 

Off-cycle mode means a mode in 

which a portable air conditioner: 

(1) Has cycled off its main cooling or 

heating function by thermostat or 

temperature sensor signal; 

(2) May or may not operate its fan or 

blower; and 

(3) Will reactivate the main function 

according to the thermostat or 

temperature sensor signal. 

Off mode means a mode that may 

persist for an indefinite time in which 

a portable air conditioner is connected 

to a mains power source, and is not 

providing any active mode, off-cycle 

mode, or standby mode function. This 

includes an indicator that only shows 

the user that the portable air conditioner 

is in the off position. 

Seasonally adjusted cooling capacity 

means the amount of cooling provided 

to the indoor conditioned space, 

measured under the specified ambient 

conditions, in Btu/h. 

Single-duct means drawing all of the 

condenser inlet air from the conditioned 

space without the means of a duct, and 

discharging the condenser outlet air 

outside the conditioned space through a 

single duct attached to an adjustable 

window bracket. 

Single-speed means incapable of 

automatically adjusting the compressor 

speed based on detected conditions. 

Standby mode means any mode 

where a portable air conditioner is 

connected to a mains power source and 

offers one or more of the following useroriented or protective functions which 

may persist for an indefinite time: 

(1) To facilitate the activation of other 

modes (including activation or 

deactivation of cooling mode) by remote 

switch (including remote control), 

internal sensor, or timer; or 

(2) Continuous functions, including 

information or status displays 

(including clocks) or sensor-based 

functions. A timer is a continuous clock 

function (which may or may not be 

associated with a display) that provides 

regular scheduled tasks (e.g., switching) 

and that operates on a continuous basis. 

Theoretical comparable single-speed 

means a hypothetical single-speed unit 

that would have the same cooling 

capacity and electrical power input as 

the variable-speed unit under test, with 

no cycling losses considered, when 

operating with the full compressor 

speed and at the test conditions in table 

1 of this appendix. 

Variable-speed means capable of 

automatically adjusting the compressor 

speed based on detected conditions. 

* * * * * 

3.1 * * * 

3.1.1 Test conduct. The test 

apparatus and instructions for testing 

portable air conditioners in cooling 

mode and off-cycle mode must conform 

to the requirements specified in Section 

4, ‘‘Definitions’’ and Section 7, ‘‘Tests,’’ 

of ANSI/AHAM PAC–1–2015, except as 

otherwise specified in this appendix. 

Measure duct heat transfer and 

infiltration air heat transfer according to 

section 4.1.1 and section 4.1.2 of this 

appendix, respectively. 

3.1.1.1 Duct setup. Use all ducting 

components provided by or required by 

the manufacturer and no others. Ducting 

components include ducts, connectors 

for attaching the duct(s) to the test unit, 

sealing, insulation, and window 

mounting fixtures. Do not apply 

additional sealing or insulation. For 

combined-duct units, the manufacturer 

must provide the testing facility an 

adapter that allows for the individual 

connection of the condenser inlet and 

outlet airflows to the test facility’s 

airflow measuring apparatuses. Use that 

adapter to measure the condenser inlet 

and outlet airflows for any 

corresponding unit. 

* * * * * 

3.1.1.6 Duct temperature 

measurements. Install any insulation 

and sealing provided by the 

manufacturer. For a dual-duct or singleduct unit, adhere four thermocouples 

per duct, spaced along the entire length 

equally, to the outer surface of the duct. 

Measure the surface temperatures of 

each duct. For a combined-duct unit, 

adhere sixteen thermocouples to the 

outer surface of the duct, spaced evenly 

around the circumference (four 

thermocouples, each 90 degrees apart, 

radially) and down the entire length of 

the duct (four sets of four 

thermocouples, evenly spaced along the 

entire length of the duct), ensuring that 

the thermocouples are spaced along the 

entire length equally, on the surface of 

the combined duct. Place at least one 

thermocouple preferably adjacent to, but 

otherwise as close as possible to, the 

condenser inlet aperture and at least one 

thermocouple on the duct surface 

preferably adjacent to, but otherwise as 

close as possible to, the condenser 


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outlet aperture. Measure the surface 

temperature of the combined duct at 

each thermocouple. Temperature 

measurements must have an error no 

greater than ±0.5 °F over the range being 

measured. 

3.1.2 Control settings. For a singlespeed unit, set the controls to the lowest 

available temperature setpoint for 

cooling mode, as described in section 

4.1.1 of this appendix. For a variablespeed unit, set the thermostat setpoint 

to 75 °F to achieve the full compressor 

speed and use the manufacturer 

instructions to achieve the low 

compressor speed, as described in 

section 4.1.2 of this appendix. If the 

portable air conditioner has a useradjustable fan speed, select the 

maximum fan speed setting. If the unit 

has an automatic louver oscillation 

feature and there is an option to disable 

that feature, disable that feature 

throughout testing. If the unit has 

adjustable louvers, position the louvers 

parallel with the air flow to maximize 

air flow and minimize static pressure 

loss. If the portable air conditioner has 

network functions, that an end-user can 

disable and the product’s user manual 

provides instructions on how to do so, 

disable all network functions 

throughout testing. If an end-user 

cannot disable a network function or the 

product’s user manual does not provide 

instruction for disabling a network 

function, test the unit with that network 

function in the factory default 

configuration for the duration of the 

test. 

* * * * * 

3.2 Standby mode and off mode. 

3.2.1 Installation requirements. For 

the standby mode and off mode testing, 

install the portable air conditioner in 

accordance with Paragraph 5.2 of IEC 

62301, referring to Annex D of that 

standard as necessary. Disregard the 

provisions regarding batteries and the 

determination, classification, and 

testing of relevant modes. 

* * * * * 

3.2.2.2 Supply voltage waveform. 

For the standby mode and off mode 

testing, maintain the electrical supply 

voltage waveform indicated in, 

Paragraph 4.3.2 of IEC 62301, referring 

to Annex D of that standard as 

necessary. 

3.2.3 Standby mode and off mode 

wattmeter. The wattmeter used to 

measure standby mode and off mode 

power consumption must meet the 

requirements specified in Paragraph 4.4 

of IEC 62301, using a two-tailed 

confidence interval and referring to 

Annex D of that standard as necessary. 

4. * * * 

4.1 Cooling mode. 

Note: For the purposes of this cooling 

mode test procedure, evaporator inlet air is 

considered the ‘‘indoor air’’ of the 

conditioned space and condenser inlet air is 

considered the ‘‘outdoor air’’ outside of the 

conditioned space. 

4.1.1 Single-Speed Cooling Mode 

Test. For single-speed portable air 

conditioners, measure the indoor room 

cooling capacity and overall power 

input in cooling mode in accordance 

with Sections 7.1.b and 7.1.c of ANSI/ 

AHAM PAC–1–2015, respectively, 

including the references to Sections 5.4, 

7.3, 7.6, 7.7, and 11 of ANSI/ASHRAE 

Standard 37–2009. Determine the test 

duration in accordance with Section 8.7 

of ASHRAE Standard 37–2009, 

including the reference to Section 9.2 of 

the same standard. Disregard the test 

conditions in Table 3 of ANSI/AHAM 

PAC–1–2015. Instead, apply the test 

conditions for single-duct and dual-duct 

portable air conditioners presented in 

table 1 of this appendix. For single-duct 

units, measure the indoor room cooling 

capacity, CapacitySD, and overall power 

input in cooling mode, PSD, in 

accordance with the ambient conditions 

for test condition 1.C, presented in table 

1 of this appendix. For dual-duct units, 

measure the indoor room cooling 

capacity and overall power input twice, 

first in accordance with ambient 

conditions for test condition 1.A 

(Capacity95, P95), and then in accordance 

with test condition 1.B (Capacity83, P83), 

both presented in Table 1 of this 

appendix. For the remainder of this test 

procedure, test combined-duct singlespeed portable air conditioners 

following any instruction for dual-duct 

single-speed portable air conditioners, 

unless otherwise specified. 

TABLE 1—SINGLE-SPEED EVAPORATOR (INDOOR) AND CONDENSER (OUTDOOR) INLET TEST CONDITIONS

Test condition 

Evaporator inlet air, °F (°C) Condenser inlet air, °F (°C) 

Dry bulb Wet bulb Dry bulb Wet bulb 

1.A .................................................................................................................... 80 (26.7) 67 (19.4) 95 (35.0) 75 (23.9) 

1.B .................................................................................................................... 80 (26.7) 67 (19.4) 83 (28.3) 67.5 (19.7) 

1.C ................................................................................................................... 80 (26.7) 67 (19.4) 80 (26.7) 67 (19.4) 

4.1.2 Variable-Speed Cooling Mode 

Test. For variable-speed portable air 

conditioners, measure the indoor room 

cooling capacity and overall power 

input in cooling mode in accordance 

with Section 7.1.b and 7.1.c of ANSI/ 

AHAM PAC–1–2015, respectively, 

including the references to Sections 5.4, 

7.3, 7.6, 7.7, and 11 of ANSI/ASHRAE 

Standard 37–2009, except as detailed 

below. Determine the test duration in 

accordance with Section 8.7 of ASHRAE 

Standard 37–2009, including the 

reference to Section 9.2 of the same 

standard. Disregard the test conditions 

in Table 3 of ANSI/AHAM PAC–1– 

2015. Instead, apply the test conditions 

for single-duct and dual-duct portable 

air conditioners presented in Table 2 of 

this appendix. For a single-duct unit, 

measure the indoor room cooling 

capacity and overall power input in 

cooling mode twice, first in accordance 

with the ambient conditions and 

compressor speed settings for test 

condition 2.D (CapacitySD_Full, PSD_Full), 

and then in accordance with the 

ambient conditions for test condition 

2.E (CapacitySD_Low, PSD_Low), both 

presented in table 2 of this appendix. 

For dual-duct units, measure the indoor 

room cooling capacity and overall 

power input three times, first in 

accordance with ambient conditions for 

test condition 2.A (Capacity95_Full, 

P95_Full), second in accordance with the 

ambient conditions for test condition 

2.B (Capacity83_Full, P83_Full), and third 

in accordance with the ambient 

conditions for test condition 2.C 

(Capacity83_Low, P83_Low), each presented 

in table 2 of this appendix. For the 

remainder of this test procedure, test 

combined-duct variable-speed portable 

air conditioners following any 

instruction for dual-duct variable-speed 

portable air conditioners, unless 

otherwise specified. For test conditions 

2.A, 2.B, and 2.D, achieve the full 

compressor speed with user controls, as 

defined in section 2.13 of this appendix. 

For test conditions 2.C and 2.E, set the 

required compressor speed in 

accordance with instructions the 

manufacturer provided to DOE. 


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TABLE 2—VARIABLE-SPEED EVAPORATOR (INDOOR) AND CONDENSER (OUTDOOR) INLET TEST CONDITIONS

Test 

condition 

Evaporator inlet air °F (°C) Condenser inlet air °F (°C) Compressor 

speed Dry bulb Wet bulb Dry bulb Wet bulb 

2.A ....................................................................................... 80 (26.7) 67 (19.4) 95 (35.0) 75 (23.9) Full. 

2.B ....................................................................................... 80 (26.7) 67 (19.4) 83 (28.3) 67.5 (19.7) Full. 

2.C ....................................................................................... 80 (26.7) 67 (19.4) 83 (28.3) 67.5 (19.7) Low. 

2.D ....................................................................................... 80 (26.7) 67 (19.4) 80 (26.7) 67 (19.4) Full. 

2.E ....................................................................................... 80 (26.7) 67 (19.4) 80 (26.7) 67 (19.4) Low. 

4.1.3. Duct Heat Transfer. 

Throughout the cooling mode test, 

measure the surface temperature of the 

condenser exhaust duct and condenser 

inlet duct, where applicable. Calculate 

the average temperature at each 

thermocouple placement location. Then 

calculate the average surface 

temperature of each duct. For singleduct and dual-duct units, calculate the 

average of the four average temperature 

measurements taken on the duct. For 

combined-duct units, calculate the 

average of the sixteen average 

temperature measurements taken on the 

duct. Calculate the surface area (Aduct_j) 

of each duct according to: 

Aduct_j = Cj × Lj 

Where: 

Cj = the circumference of duct ‘‘j’’, including 

any manufacturer-supplied insulation, 

measured by wrapping a flexible 

measuring tape, or equivalent, around 

the outside of a combined duct, making 

sure the tape is on the outermost ridges 

or, alternatively, if the duct has a circular 

cross-section, by multiplying the outer 

diameter by 3.14. 

Lj = the extended length of duct ‘‘j’’ while 

under test. 

j represents the condenser exhaust duct for 

single-duct units, the condenser exhaust 

duct and the condenser inlet duct for 

dual-duct units, and the combined duct 

for combined-duct units. 

Calculate the total heat transferred 

from the surface of the duct(s) to the 

indoor conditioned space while 

operating in cooling mode at each test 

condition, as follows: 

For single-duct single-speed portable 

air conditioners: 

Qduct_SD = 3 × Aduct_j × (Tduct_j¥Tei) 

For dual-duct single-speed portable 

air conditioners: 

Qduct_DD_95 = è j{3 × Aduct_j × 

(Tduct_95_j¥Tei)} 

Qduct_DD_83 = è j{3 × Aduct_j × 

(Tduct_83_j¥Tei)} 

For single-duct variable-speed 

portable air conditioners: 

Qduct_SD_Full = 3 × Aduct × 

(Tduct_Full_j¥Tei) 

Qduct_SD_Low = 3 × Aduct × 

(Tduct_Low_j¥Tei) 

For dual-duct variable-speed portable 

air conditioners: 

Qduct_DD_95_Full = è j{3 × Aduct_j × 

(Tduct_Full_95_j¥Tei)} 

Qduct_DD_83_Full = è j{3 × Aduct_j × 

(Tduct_Full_83_j¥Tei)} 

Qduct_DD_83_Low = è j{3 × Aduct_j × 

(Tduct_Low_83_j¥Tei)} 

Where: 

Qduct_SD = the total heat transferred from the 

duct to the indoor conditioned space in 

cooling mode, in Btu/h, when tested at 

Test Condition 1.C. 

Qduct_DD_95 and Qduct_DD_83 = the total heat 

transferred from the ducts to the indoor 

conditioned space in cooling mode, in 

Btu/h, when tested at Test Conditions 

1.A and 1.B, respectively. 

Qduct_SD_Full and Qduct_SD_Low = the total heat 

transferred from the duct to the indoor 

conditioned space in cooling mode, in 

Btu/h, when tested at Test Conditions 

2.D and 2.E, respectively. 

Qduct_DD_95_Full, Qduct_DD_83_Full, and 

Qduct_DD_83_Low = the total heat 

transferred from the ducts to the indoor 

conditioned space in cooling mode, in 

Btu/h, when tested at Test Condition 

2.A, Test Condition 2.B, and Test 

Condition 2.C, respectively. 

3 = empirically-derived convection 

coefficient in Btu/h per square foot per 

°F. 

Aduct_j = surface area of the duct ‘‘j’’, as 

calculated in this section, in square feet. 

Tduct_j = average surface temperature for duct 

‘‘j’’ of single-duct single-speed portable 

air conditioners, in °F, as measured at 

Test Condition 1.C. 

Tduct_95_j and Tduct_83_j = average surface 

temperature for duct ‘‘j’’ of dual-duct 

single-speed portable air conditioners, in 

°F, as measured at Test Conditions 1.A 

and 1.B, respectively. 

Tduct_Full_j and Tduct_Low_j = average surface 

temperature for duct ‘‘j’’ of single-duct 

variable-speed portable air conditioners, 

in °F, as measured at Test Conditions 2.D 

and 2.E, respectively. 

Tduct_Full_95_j, Tduct_Full_83_j, and Tduct_Low_83_j

= average surface temperature for duct 

‘‘j’’ of dual-duct variable-speed portable 

air conditioners, in °F, as measured at 

Test Conditions 2.A, 2.B, and 2.C, 

respectively. 

j represents the condenser exhaust duct for 

single-duct units, the condenser exhaust 

duct and the condenser inlet duct for 

dual-duct units, and the combined duct 

for combined-duct units. 

Tei = average evaporator inlet air dry-bulb 

temperature, as measured in section 4.1 

of this appendix, in °F. 

4.1.4. Infiltration Air Heat Transfer. 

Calculate the sample unit’s heat 

contribution from infiltration air into 

the conditioned space for each cooling 

mode test as follows: 

Calculate the dry air mass flow rate of 

infiltration air, which affects the 

sensible and latent components of heat 

contribution from infiltration air, 

according to the following equations. 

BILLING CODE 6450–01–P 


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BILLING CODE 6450-–01–C 

Where: 

m ̇ SD, m ̇ SD_Full, and m ̇ SD_Low = dry air mass 

flow rate of infiltration air for single-duct 

portable air conditioners, in pounds per 

minute (lb/m) when tested at Test 

Conditions 1.C, 2.D, and 2.E, 

respectively. 

m ̇ 95, m ̇ 83, m ̇ 95_Full, m ̇ 83_Full, and m ̇ 83_Low = dry 

air mass flow rate of infiltration air for 

dual-duct portable air conditioners, in 

lb/m, when tested at Test Conditions 

1.A, 1.B, 2.A, 2.B, and 2.C, respectively. 

Vco_SD, Vco_SD_Full, Vco_SD_Low, Vco_95, Vco_83,

Vco_95_Full, Vco_83_Full, and Vco_83_Low = 

average volumetric flow rate of the 

condenser outlet air, in cubic feet per 

minute (cfm), as measured at Test 

Conditions 1.C, 2.D, 2.E, 1.A, 1.B, 2.A, 

2.B, and 2.C, respectively, as required in 

sections 4.1.1 and 4.1.2 of this appendix. 

Vci_95, Vci_83, Vci_95_Full, Vci_83_Full, and 

Vci_83_Low = average volumetric flow rate 

of the condenser inlet air, in cfm, as 

measured at Test Conditions 1.A, 1.B, 

2.A, 2.B, and 2.C, respectively, as 

required in sections 4.1.1 and 4.1.2 of 

this appendix. 

rco_SD, rco_SD_Full, rco_SD_Low, rco_95, rco_83,

rco_95_Full, rco_83_Full, and rco_83_Low = 

average density of the condenser outlet 

air, in pounds mass per cubic foot (lbm/ 

ft3), as measured at Test Conditions 1.C, 

2.D, 2.E, 1.A, 1.B, 2.A, 2.B, and 2.C, 

respectively, as required in sections 4.1.1 

and 4.1.2 of this appendix. 

rci_95, rci_83, rci_95_Full, rci_83_Full, and 

rci_83_Low = average density of the 

condenser inlet air, in lbm/ft3, as 

measured at Test Conditions 1.A, 1.B, 

2.A, 2.B, and 2.C, respectively, as 

required in section 4.1.1 and 4.1.2 of this 

appendix. 

wco_SD, wco_SD_Full, wco_SD_Low, wco_95, wco_83,

wco_95_Full, wco_83_Full, and wco_83_Low = 

average humidity ratio of condenser 

outlet air, in pounds mass of water vapor 

per pounds mass of dry air (lbw/lbda), as 

measured at Test Conditions 1.C, 2.D, 

2.E, 1.A, 1.B, 2.A, 2.B, and 2.C, 

respectively, as required in sections 4.1.1 

and 4.1.2 of this appendix. 

wci_95, wci_83, wci_95_Full, wci_83_Full, and wci_83_

Low = average humidity ratio of 

condenser inlet air, in lbw/lbda, as 

measured at Test Conditions 1.A, 1.B, 

2.A, 2.B, and 2.C, respectively, as 

required in sections 4.1.1 and 4.1.2 of 

this appendix. 

Calculate the sensible component of 

infiltration air heat contribution 

according to the following equations. 

For single-duct single-speed units: 

Qs_SD_95 = m ̇ SD × 60 × [cp_da × (95 ¥80) 

+ (cp_wv × (0.0141 × 95¥0.0112 × 

80))] 

Qs_SD_83 = m ̇ SD × 60 × [(cp_da × (83¥80) 

+ (cp_wv × (0.01086 × 83¥0.0112 

×80))] 

For dual-duct single-speed units: 

Qs_DD_95 = m ̇ 95 × 60 × [cp_da × (95¥80) 

+ (cp_wv × (0.0141 × 95¥0.0112 × 

80))] 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.004</GPH>

For a single-duct single-speed unit: 

. Veo SD X Peo SD 

msD = 

( 1 + Weo_sD) 

For a dual-duct single-speed unit: 

rh95 = Veo_95 X Peo_95 _ vci_95 X Pci_95 

( 1 + Weo_95) ( 1 + wci_95) 

. Veo 83 X Peo 83 Vei 83 X Pei 83 

m83 = - ( 1 + Weo_83) ( 1 + Wci_B3) 

For a single-duct variable-speed unit: 

. Veo SD Full X Peo SD Full 

msD_Full = 

( 1 + Wco_SD_Full) 

. Veo Low X Peo Low 

msD Low= ( ) - 1 + Weo_Low 

For a dual-duct variable-speed unit: 

. Veo 95 Full X Peo 95 Full 

m95_Full = 

( 1 + Weo_95_Full) 

. Veo_83_Full X Peo_83_Full 

m83 Full= ( ) - 1 + Weo_83_Full 

. Veo_83_Low X Peo_83_Low 

ma3 Low= ( ) - 1 + Weo_83_Low 

vci 95 Full X Pei 95 Full 

( 1 + Wci_95_Full) 

vci_83_Full X Pci_83_Full 

( 1 + Wei_83_Full) 

vci_83_Low X Pci_83_Low 

( 1 + Wci_83_Low) 
Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34969 

Qs_DD_83 = m ̇ 83 × 60 × [(cp_da × (83¥80) 

+ (cp_wv × (0.01086 × 83¥0.0112 

×80))] 

For single-duct variable-speed units: 

Qs_SD_95_Full = m ̇ SD_Full × 60 × [cp_da × 

(95¥80) + (cp_wv × (0.0141 × 

95¥0.0112 × 80))] 

Qs_SD_83_Full = m ̇ SD_Full × 60 × [(cp_da × 

(83¥80) + (cp_wv × (0.01086 × 

83¥0.0112 ×80))] 

Qs_SD_83_Low = m ̇ SD_Low × 60 × [(cp_da × 

(83¥80) + (cp_wv × (0.01086 × 

83¥0.0112 ×80))] 

For dual-duct variable-speed units: 

Qs_DD_95_Full = m ̇ 95_Full × 60 × [cp_da × 

(95¥80) + (cp_wv × (0.0141 × 

95¥0.0112 × 80))] 

Qs_DD_83_Full = m ̇ 83_Full × 60 × [(cp_da × 

(83¥80) + (cp_wv × (0.01086 × 

83¥0.0112 ×80))] 

Qs_DD_83_Low = m ̇ 83_Low × 60 × [(cp_da × 

(83¥80) + (cp_wv × (0.01086 × 

83¥0.0112 ×80))] 

Where: 

Qs_SD_95, Qs_SD_83, Qs_DD_95, and Qs_DD_83 = 

sensible heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration and temperature condition. 

Qs_SD_95_Full, Qs_SD_83_Full, Qs_SD_83_Low, Qs_

DD_95_Full, Qs_DD_83_Full, and Qs_DD_83_Low

= sensible heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration, temperature condition, 

and compressor speed. 

m ̇ SD, m ̇ 95, and m ̇ 83 = dry air mass flow rate 

of infiltration air for single-speed 

portable air conditioners, in lb/m, as 

calculated in section 4.1.4 of this 

appendix. 

m ̇ SD_95_Full, m ̇ SD_83_Low, m ̇ 95_Full and m ̇ 83_Low

= dry air mass flow rate of infiltration air 

for variable-speed portable air 

conditioners, in lb/m, as calculated in 

section 4.1.4 of this appendix. 

cp_da = specific heat of dry air, 0.24 Btu/(lbm 

°F). 

cp_wv = specific heat of water vapor, 0.444 

Btu/(lbm °F). 

80 = indoor chamber dry-bulb temperature, 

in °F. 

95 = infiltration air dry-bulb temperature for 

Test Conditions 1.A and 2.A, in °F. 

83 = infiltration air dry-bulb temperature for 

Test Conditions 1.B, 2.B, and 2.C, in °F. 

0.0141 = humidity ratio of the dry-bulb 

infiltration air for Test Conditions 1.A 

and 2.A, in lbw/lbda. 

0.01086 = humidity ratio of the dry-bulb 

infiltration air for Test Conditions 1.B, 

2.B, and 2.C, in lbw/lbda. 

0.0112 = humidity ratio of the indoor 

chamber air, in lbw/lbda (windoor). 

60 = conversion factor from minutes to hours. 

Calculate the latent heat contribution 

of the infiltration air according to the 

following equations. For a single-duct 

single-speed unit: 

Ql_SD_95 = m ̇ SD × 60 × 1061 × 

(0.0141¥0.0112) 

Ql_SD_83 = m ̇ SD × 60 × 1061 × 

(0.01086¥0.0112) 

For a dual-duct single-speed unit: 

Ql_DD_95 = m ̇ 95 × 60 × 1061 × 

(0.0141¥0.0112) 

Ql_DD_83 = m ̇ 83 × 60 × 1061 × 

(0.01086¥0.0112) 

For a single-duct variable-speed unita: 

Ql_SD_95_Full = m ̇ SD_Full × 60 × 1061 × 

(0.0141¥0.0112) 

Ql_SD_83_Full = m ̇ SD_Full × 60 × 1061 × 

(0.01086¥0.0112) 

Ql_SD_83_Low = m ̇ SD_Low × 60 × 1061 × 

(0.01086¥0.0112) 

For a dual-duct variable-speed unit: 

Ql_DD_95_Full = m ̇ 95_Full × 60 × 1061 × 

(0.0141¥0.0112) 

Ql_DD_83_Full = m ̇ 83_Full × 60 × 1061 × 

(0.01086¥0.0112) 

Ql_DD_83_Low = m ̇ 83_Low × 60 × 1061 × 

(0.01086¥0.0112) 

Where: 

Ql_SD_95, Ql_SD_83, Ql_DD_95, and Ql_DD_83= 

latent heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration and temperature condition. 

Ql_SD_95_Full, Ql_SD_83_Full, Ql_SD_Low, Ql_DD_

95_Full, Ql_DD_83_Full, and Ql_DD_83_Low = 

latent heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration, temperature condition, 

and compressor speed. 

m ̇ SD, m ̇ 95, and m ̇ 83 = dry air mass flow rate 

of infiltration air for portable air 

conditioners, in lb/m, when tested at 

Test Conditions 1.C, 1.A, and 1.B, 

respectively, as calculated in section 

4.1.4 of this appendix. 

m ̇ SD_Full, m ̇ SD_Low, m ̇ 95_Full, m ̇ 83_Full and m ̇ 83_

Low = dry air mass flow rate of infiltration 

air for portable air conditioners, in lb/m, 

when tested at Test Conditions 2.D, 2.E, 

2.A, 2.B, and 2.C, respectively, as 

calculated in section 4.1.4 of this 

appendix. 

1061 = latent heat of vaporization for water 

vapor, in Btu/lbm (Hfg). 

0.0141 = humidity ratio of the dry-bulb 

infiltration air for Test Conditions 1.A 

and 2.A, in lbw/lbda. 

0.01086 = humidity ratio of the dry-bulb 

infiltration air for Test Conditions 1.B, 

2.B, and 2.C, in lbw/lbda. 

0.0112 = humidity ratio of the indoor 

chamber air, in lbw/lbda. 

60 = conversion factor from minutes to hours. 

Calculate the total heat contribution 

of the infiltration air at each test 

condition by adding the sensible and 

latent heat according to the following 

equations. 

For a single-duct single-speed unit: 

Qinfiltration_SD_95 = Qs_SD_95 + Ql_SD_95

Qinfiltration_SD_83 = Qs_SD_83 + Ql_SD_83

For a dual-duct single-speed unit: 

Qinfiltration_DD_95 = Qs_DD_95 + Ql_DD_95

Qinfiltration_DD_83 = Qs_DD_83 + Ql_DD_83

For a single-duct variable-speed unit: 

Qinfiltration_SD_95_Full = Qs_SD_95_Full + Ql_

SD_95_Full

Qinfiltration_SD_83_Full = Qs_SD_83_Full + Ql_

SD_83_Full

Qinfiltration_SD_83_Low = Qs_SD_83_Low + Ql_

SD_83_Low

For a dual-duct variable-speed unit: 

Qinfiltration_DD_95_Full = Qs_DD_95_Full + Ql_

DD_95_Full

Qinfiltration_DD_83_Full = Qs_DD_83_Full + Ql_

DD_83_Full

Qinfiltration_DD_83_Low = Qs_DD_83_Low + Ql_

DD_83_Low

Where: 

Qinfiltration_SD_95, Qinfiltration_SD_83, Qinfiltration_

DD_95, Qinfiltration_DD_83 = total infiltration 

air heat in cooling mode, in Btu/h, for 

each duct configuration and temperature 

condition. 

Qinfiltration_SD_95_Full, Qinfiltration_SD_83_Full, 

Qinfiltration_SD_83_Low, Qinfiltration_DD_95_Full, 

Qinfiltration_DD_83_Full, and Qinfiltration_DD_83_

Low = total infiltration air heat in cooling 

mode, in Btu/h, for each duct 

configuration, temperature condition, 

and compressor speed. 

Qs_SD_95, Qs_SD_83, Qs_DD_95, and Qs_DD_83 = 

sensible heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration, temperature condition, 

and compressor speed. 

Qs_SD_95_Full, Qs_SD_83_Full, Qs_SD_83_Low, Qs_

DD_95_Full, Qs_DD_83_Full, and Qs_DD_83_Low

= sensible heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration, temperature condition, 

and compressor speed. 

Ql_SD_95, Ql_SD_83, Ql_DD_95, and Ql_DD_83= 

latent heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration, and temperature 

condition. 

Ql_SD_95_Full, Ql_SD_83_Full, Ql_SD_83_Low, Ql_

DD_95_Full, Ql_DD_83_Full, and Ql_DD_83_Low

= latent heat added to the room by 

infiltration air, in Btu/h, for each duct 

configuration, temperature condition, 

and compressor speed. 

* * * * * 

4.3 Standby mode and off mode. 

Establish the testing conditions set forth 

in section 3.2 of this appendix, ensuring 

that the unit does not enter any active 

modes during the test. As discussed in 

Paragraph 5.1, Note 1 of IEC 62301, 

allow sufficient time for the unit to 

reach the lowest power state before 

proceeding with the test measurement. 

Follow the test procedure specified in 

Paragraph 5.3.2 of IEC 62301 for testing 

in each possible mode as described in 

sections 4.3.1 and 4.3.2 of this 

appendix. If the standby mode is cyclic 

and irregular or unstable, collect 10 

cycles worth of data. 

* * * * * 

5.1 * * * 

5.1.1 Single-Speed Adjusted Cooling 

Capacity. For a single-speed portable air 

conditioner, calculate the adjusted 

cooling capacity at each outdoor 

temperature operating condition, in Btu/ 

h, according to the following equations. 

For a single-duct single-speed 

portable air conditioner unit: 


khammond on DSKJM1Z7X2PROD with PROPOSALS2
34970 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

ACCSD_95_SS = CapacitySD¥Qduct_

SD¥Qinflitration_SD_95

ACCSD_83_SS = CapacitySD¥Qduct_

SD¥Qinflitration_SD_83

For a dual-duct single-speed portable 

air conditioner unit: 

ACCDD_95_SS = Capacity95¥Qduct_

95¥Qinflitration_DD_95

ACCSD_83_SS = Capacity83¥Qduct_

83¥Qinflitration_SD_83

Where: 

CapacitySD, Capacity95, and Capacity83 = 

cooling capacity for each duct 

configuration or temperature condition 

measured in section 4.1.1 of this 

appendix. 

Qduct_SD, Qduct_DD_95, and Qduct_DD_83 = duct 

heat transfer for each duct configuration 

or temperature condition while operating 

in cooling mode, calculated in section 

4.1.3 of this appendix. 

Qinfiltration_SD_95, Qinfiltration_SD_83, Qinfiltration_DD_

95, Qinfiltration_DD_83= total infiltration air 

heat transfer in cooling mode for each 

duct configuration and temperature 

condition, calculated in section 4.1.4 of 

this appendix. 

5.1.2 Variable-Speed Adjusted 

Cooling Capacity. For variable-speed 

portable air conditioners, calculate the 

adjusted cooling capacity at each 

outdoor temperature operating 

condition, in Btu/h, according to the 

following equations: 

For a single-duct variable-speed 

portable air conditioner unit: 

ACCSD_95 = CapacitySD_Full¥Qduct_SD_

Full¥Qinflitration_SD_95_Full

ACCSD_83_Full = CapacitySD_Full¥Qduct_

SD_Full¥Qinflitration_SD_83_Full

ACCSD_83_Low = CapacitySD_Low¥Qduct_

SD_Low¥Qinflitration_SD_83_Low

For a dual-duct variable-speed 

portable air conditioner unit: 

ACCDD_95 = CapacityDD_95_Full¥Qduct_

DD_95_Full¥Qinflitration_DD_95_Full

ACCDD_83_Full = CapacityDD_83_

Full¥Qduct_DD_83_Full¥Qinflitration_DD_

83_Full

ACCDD_83_Low = CapacityDD_83_

Low¥Qduct_DD_83_Low¥Qinflitration_DD_

83_Low

Where: 

CapacitySD_Full, CapacitySD_Low, CapacityDD_

95_Full, CapacityDD_83_Full, and 

CapacityDD_83_Low = cooling capacity in 

Btu/h for each duct configuration, 

temperature condition (where 

applicable), and compressor speed, as 

measured in section 4.1.2 of this 

appendix. 

Qduct_SD_Full, Qduct_SD_Low, Qduct_DD_95_Full, 

Qduct_DD_83_Full, and Qduct_DD_83_Low = 

combined duct heat transfer for each 

duct configuration, temperature 

condition (where applicable), and 

compressor speed, as calculated in 

section 4.1.3 of this appendix. 

Qinfiltration_SD_95_Full, Qinfiltration_SD_83_Full, 

Qinfiltration_SD_83_Low, Qinfiltration_DD_95_Full, 

Qinfiltration_DD_83_Full, and Qinfiltration_DD_83_

Low = total infiltration air heat transfer in 

cooling mode for each duct 

configuration, temperature condition, 

and compressor speed, as calculated in 

section 4.1.4 of this appendix. 

5.2 Seasonally Adjusted Cooling 

Capacity. Calculate the unit’s seasonally 

adjusted cooling capacity, SACC, in 

Btu/h, according to the following 

equations: 

For a single-speed portable air 

conditioner unit: 

SACCSD = ACCSD_95_SS × 0.2 + ACCSD_

83_SS × 0.8 

SACCDD = ACCDD_95_SS × 0.2 + ACCDD_

83_SS × 0.8 

For a variable-speed portable air 

conditioner unit: 

SACCSD = ACCSD_95 × 0.2 + ACCSD_83_

Low × 0.8 

SACCDD = ACCDD_95 × 0.2 + ACCDD_83_

Low × 0.8 

Where: 

ACCSD_95_SS, ACCSD_83_SS, ACCDD_95_SS, and 

ACCDD_83_SS = adjusted cooling capacity 

for single-speed portable air conditioners 

for each duct configuration and 

temperature condition, in Btu/h, 

calculated in section 5.1.1 of this 

appendix. 

ACCSD_95, ACCSD_83_Low, ACCDD_95, and 

ACCDD_83_Low = adjusted cooling 

capacity for variable-speed portable air 

conditioners for each duct configuration, 

temperature condition, and compressor 

speed, in Btu/h, calculated in section 

5.1.2 of this appendix. 

0.2 = weighting factor for the 95 °F test 

condition. 

0.8 = weighting factor for the 83 °F test 

condition. 

5.2.1 Full-Load Seasonally Adjusted 

Cooling Capacity Calculation. For 

variable-speed portable ACs determine a 

Full-Load Seasonally Adjusted Cooling 

Capacity (SACCFull) using the following 

formulas: 

SACCFull_SD = ACCSD_95 × 0.2 + ACCSD_83_Full

× 0.8 

SACCFull_DD = ACCDD_95 × 0.2 + ACCDD_83_

Full × 0.8 

ACCSD_95, ACCSD_83_Full, ACCDD_95, and 

ACCDD_83_Full = adjusted cooling 

capacity for variable-speed portable air 

conditioners for each duct configuration, 

temperature condition, and compressor 

speed (where applicable), in Btu/h, 

calculated in section 5.1.2 of this 

appendix. 

0.2 = weighting factor for the 95 °F test 

condition. 

0.8 = weighting factor for the 83 °F test 

condition. 

5.3 Annual Energy Consumption. 

Calculate the sample unit’s annual 

energy consumption in each operating 

mode according to the following 

equation. For each operating mode, use 

the following annual hours of operation 

and equation: 

Type of portable air conditioner Operating mode Subscript 

Annual 

operating 

hours 

Variable speed (single- or 

dual-duct).

Cooling Mode: Test Conditions 2.A, 2.B, 2.C, 

2.D, and 2.E1.

DD_95_Full, DD_83_Full, DD_83_Low, SD_

Full, and SD_Low..

750 

Single speed (single- or dualduct).Cooling Mode: Test Conditions 1.A, 1.B, and 

1C 1.

DD_95, DD_83, and SD .................................. 750 

all ............................................. Off-Cycle .......................................................... oc ..................................................................... 880 

all ............................................. Inactive or Off .................................................. ia or om ........................................................... 1,355 

1These operating mode hours are for the purposes of calculating annual energy consumption under different ambient conditions and are not a 

division of the total cooling mode operating hours. The total cooling mode operating hours are 750 hours. 

AECm = Pm × tm × 0.001 

Where: 

AECm = annual energy consumption in the 

operating mode, in kWh/year. 

m represents the operating mode as shown in 

the table above with each operating 

mode’s respective subscript. 

Pm = average power in the operating mode, 

in watts, as determined in sections 4.1.1 

and 4.1.2 of this appendix. 

tm = number of annual operating time in each 

operating mode, in hours.0.001 kWh/Wh 

= conversion factor from watt-hours to 

kilowatt-hours. 

Calculate the sample unit’s total 

annual energy consumption in off-cycle 


khammond on DSKJM1Z7X2PROD with PROPOSALS2
Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34971 

mode and inactive or off mode as 

follows: 

AECT = ;ncmAECncm

Where: 

AECT = total annual energy consumption 

attributed to off-cycle mode and inactive 

or off mode, in kWh/year; 

AECm = total annual energy consumption in 

the operating mode, in kWh/year. 

ncm represents the following two noncooling operating modes: off-cycle mode 

and inactive or off mode. 

5.4 Combined Energy Efficiency 

Ratio. 

5.4.1 Combined Energy Efficiency 

Ratio for Single-Speed Portable Air 

Conditioners. Using the annual 

operating hours established in section 

5.3 of this appendix, calculate the 

combined energy efficiency ratio, CEER, 

in Btu/Wh, for single-speed portable air 

conditioners according to the following 

equation, as applicable: 

Where: 

CEERSD and CEERDD = combined energy 

efficiency ratio for a single-duct unit and 

dual-duct unit, respectively, in Btu/Wh. 

ACCSD_95_SS, ACCSD_83_SS, ACCDD_95_SS,

ACCDD_83_SS = adjusted cooling capacity 

for each duct configuration and 

temperature condition, in Btu/h, 

calculated in section 5.1 of this 

appendix. 

AECSD, AECDD_95 and AECDD_83 = annual 

energy consumption in cooling mode for 

each duct configuration and temperature 

condition, in kWh/year, calculated in 

section 5.3 of this appendix. 

AECT = total annual energy consumption 

attributed to all modes except cooling, in 

kWh/year, calculated in section 5.3 of 

this appendix. 

0.750 = number of cooling mode hours per 

year, 750, multiplied by the conversion 

factor for watt-hours to kilowatt-hours, 

0.001 kWh/Wh. 

0.2 = weighting factor for the 95 °F dry-bulb 

outdoor condition test. 

0.8 = weighting factor for the 83 °F dry-bulb 

outdoor condition test. 

5.4.2 Combined Energy Efficiency 

Ratio for Variable-Speed Portable Air 

Conditioners. 

5.4.2.1 Unadjusted Combined 

Energy Efficiency Ratio. 

For a variable-speed portable air 

conditioner, calculate the unit’s 

unadjusted combined energy efficiency 

ratio, CEERUA, in Btu/Wh, as follows: 

Where: 

CEERSD_UA, and CEERDD_UA = unadjusted 

combined energy efficiency ratio for a 

single-duct and dual-duct sample unit, 

in Btu/Wh, respectively. 

ACCSD_95, ACCSD_83_Low, ACCDD_95, and 

ACCDD_83 = adjusted cooling capacity for 

each duct configuration, temperature 

condition, and compressor speed, as 

calculated in section 5.1.2 of this 

appendix, in Btu/h. 

AECSD_Full, AECSD_Low, AECDD_95_Full, and 

AECDD_83_Low = annual energy 

consumption for each duct 

configuration, temperature condition, 

and compressor speed in cooling mode 

operation, as calculated in section 5.3 of 

this appendix, in kWh/year. 

AECia/om = annual energy consumption 

attributed to inactive or off mode, in 

kWh/year, calculated in section 5.3 of 

this appendix. 

0.750 = number of cooling mode hours per 

year, 750, multiplied by the conversion 

factor for watt-hours to kilowatt-hours, 

0.001 kWh/Wh. 

0.2 = weighting factor for the 95 °F dry-bulb 

outdoor temperature operating 

condition. 

0.8 = weighting factor for the 83 °F dry-bulb 

outdoor temperature operating 

condition. 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.005</GPH> EP08JN22.006</GPH>

-[(ACCsv_95_ss x 0.2 + ACCsv_83_ss x 0.8)] 

CEERsv - AECsv + AECr 

( 0.750 ) 

[ ACCvv 95 ss ] [ ACCvv 83 ss ] 

CEERvv = (AECvv 95 + AECr) x 0·

2 + (AECvv 83 + AECr) x 0·8 

0.750 0.750 

For single-duct variable-speed portable air conditioners: 

[ CEERsv UA = ACC SD_95 l [ X 0.2 + ACC SD_83_Low l X 0.8 

- (AECsD_Full + AECia/om) (AECsD_Low + AECia/om) 

0.750 0.750 

For dual-duct variable-speed portable air conditioners: 

[ CEERvv UA = ACC DD_95 l [ X 0.2 + ACC DD_83_Low l X 0.8 

- (AECvv 95 Full + AECia/om) (AECvv 83 Low + AECia/om) 

0.750 0.750 
34972 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

5.5 Adjustment of the Combined 

Energy Efficiency Ratio. Adjust the 

sample unit’s unadjusted combined 

energy efficiency ratio as follows. 

5.5.1 Theoretical Comparable 

Single-Speed Portable Air Conditioner 

Cooling Capacity and Power at the 

Lower Outdoor Temperature Operating 

Condition. Calculate the cooling 

capacity without and with cycling 

losses, in British thermal units per hour 

(Btu/h), and electrical power input, in 

watts, for a single-duct or dual-duct 

theoretical comparable single-speed 

portable air conditioner at an 83 °F 

outdoor dry-bulb outdoor temperature 

operating condition according to the 

following equations: 

For a single-duct theoretical 

comparable single speed portable air 

conditioner: 

CapacitySD_83_SS = CapacitySD_Full

CapacitySD_83_SS_CF = CapacitySD_Full × 

0.82 

PSD_83_SS = PSD_Full

For a dual-duct theoretical 

comparable single speed portable air 

conditioner: 

CapacityDD_83_SS = Capacity83_Full

CapacityDD_83_SS_CF = Capacity83_Full × 

0.82 

PDD_83_SS = P83_Low

Where: 

CapacitySD_83_SS and CapacityDD_83_SS = 

cooling capacity of a single-duct and 

dual-duct theoretical comparable singlespeed portable air conditioner, 

calculated for the 83 °F dry-bulb outdoor 

temperature operating condition (Test 

Conditions 2.E and 2.B, respectively), in 

Btu/h. 

CapacitySD_83_SS_CF and CapacityDD_83_SS_CF

= cooling capacity of a single-duct and 

dual-duct theoretical comparable singlespeed portable air conditioner with 

cycling losses, in Btu/h, calculated for 

the 83 °F dry-bulb outdoor temperature 

operating condition (Test Conditions 2.E 

and 2.B, respectively). 

CapacitySD_Full and Capacity83_Full = cooling 

capacity of the sample unit, measured in 

section 4.1.2 of this appendix at Test 

Conditions 2.D and 2.B, in Btu/h. 

PSD_83_SS and PDD_83_SS = power input of a 

single-duct and dual-duct theoretical 

comparable single-speed portable air 

conditioner calculated for the 83 °F drybulb outdoor temperature operating 

condition (Test Conditions 2.E and 2.B, 

respectively), in watts. 

PSD_Full and P83_Low = electrical power input 

of the sample unit, measured in section 

4.1.2 of this appendix at Test Conditions 

2.D and 2.B, in watts. 

0.82 = empirically-derived cycling factor for 

the 83 °F dry-bulb outdoor temperature 

operating condition. 

5.5.2 Duct Heat Transfer for a 

Theoretical Comparable Single-Speed 

Portable Air Conditioner at the Lower 

Outdoor Temperature Operating 

Condition. Calculate the duct heat 

transfer to the conditioned space for a 

single-duct or dual-duct theoretical 

comparable single-speed portable air 

conditioner at the 83 °F dry-bulb 

outdoor temperature operating 

condition as follows: 

For a single-duct theoretical 

comparable single-speed portable air 

conditioner: 

Qduct_SD_83_SS = Qduct_SD_Full

For a dual-duct theoretical 

comparable single-speed portable air 

conditioner: 

Qduct_DD_83_SS = Qduct_DD_83_Full

Where: 

Qduct_SD_83_SS and Qduct_DD_83_SS = total heat 

transferred from the condenser exhaust 

duct to the indoor conditioned space in 

cooling mode, for single-duct and dualduct theoretical comparable single-speed 

portable air conditioners, respectively, at 

the 83 °F dry-bulb outdoor temperature 

operating condition (Test Conditions 2.E 

and 2.B, respectively), in Btu/h. 

Qduct_SD_Full and Qduct_DD_83_Full = the total 

heat transferred from the duct to the 

indoor conditioned space in cooling 

mode, when tested at Test Conditions 

2.D and 2.B, respectively, as calculated 

in section 4.1.3 of this appendix, in Btu/ 

h. 

5.5.3 Infiltration Air Heat Transfer for 

a Theoretical Comparable Single-Speed 

Portable Air Conditioner at the Lower 

Outdoor Temperature Operating 

Condition. Calculate the total heat 

contribution from infiltration air for a 

single-duct or dual-duct theoretical 

comparable single-speed portable air 

conditioner at the 83 °F dry-bulb 

outdoor temperature operating 

condition, as follows: 

For a single-duct theoretical 

comparable single-speed portable air 

conditioner: 

Qinfiltration_SD_83_SS = Qinfiltration_SD_83_Full

For a dual-duct theoretical 

comparable single-speed portable air 

conditioner: 

Qinfiltration_DD_83_SS = Qinfiltration_DD_83_Full

Where: 

Qinfiltration_SD_83_SS and Qinfiltration_DD_83_SS = 

total infiltration air heat in cooling mode 

for a single-duct and dual-duct 

theoretical comparable single-speed 

portable air conditioner, respectively at 

the 83 °F dry-bulb outdoor temperature 

operating condition (Test Conditions 2.E 

and 2.B, respectively), in Btu/h. 

Qinfiltration_SD_83_Full and Qinfiltration_DD_83_Full = 

total infiltration air heat transfer of the 

sample unit in cooling mode for each 

duct configuration, temperature 

condition, and compressor speed, as 

calculated in section 4.1.4 of this 

appendix, in Btu/h. 

5.5.4 Adjusted Cooling Capacity for a 

Theoretical Comparable Single-Speed 

Portable Air Conditioner at the Lower 

Outdoor Temperature Operating 

Condition. Calculate the adjusted 

cooling capacity without and with 

cycling losses for a single-duct or dualduct theoretical comparable singlespeed portable air conditioner at the 

83 °F dry-bulb outdoor temperature 

operating condition, in Btu/h, according 

to the following equations: 

For a single-duct theoretical 

comparable single-speed portable air 

conditioner: 

ACCSD_83_SS = CapacitySD_83_SS¥Qduct_

SD_83_SS¥Qinfiltration_SD_83_SS

ACCSD_83_SS_CF = CapacitySD_83_SS_

CF¥Qduct_SD_83_SS¥Qinfiltration_SD_83_

SS

For a dual-duct theoretical 

comparable single-speed portable air 

conditioner: 

ACCDD_83_SS = Capacity83_SS¥Qduct_DD_

83_SS¥Qinfiltration_DD_83_SS

ACCDD_83_SS_CF = CapacityDD_83_SS_

CF—Qduct_DD_83_SS¥Qinfiltration_DD_

83_SS

Where: 

ACCSD_83_SS, ACCSD_83_SS_CF, ACCDD_83_

SS, and ACCDD_83_SS_CF = adjusted cooling 

capacity for a single-duct and dual-duct 

theoretical comparable single-speed portable 

air conditioner at the 83 °F dry-bulb outdoor 

temperature operating condition (Test 

Conditions 2.E and 2.B, respectively) without 

and with cycling losses, respectively, in Btu/ 

h. 

CapacitySD_83_SS and CapacitySD_83_SS_CF = 

cooling capacity of a single-duct 

theoretical comparable single-speed 

portable air conditioner without and 

with cycling losses, respectively, at Test 

Conditions 2.E and 2.B (the 83 °F drybulb outdoor temperature operating 

condition), respectively, calculated in 

section 5.5.1 of this appendix, in Btu/h. 

CapacityDD_83_SS and CapacityDD_83_SS_CF = 

cooling capacity of a dual-duct 

theoretical comparable single-speed 

portable air conditioner without and 

with cycling losses, respectively, at Test 

Conditions 2.E and 2.B (the 83 °F drybulb outdoor temperature operating 

condition), respectively, calculated in 

section 5.5.1 of this appendix, in Btu/h. 

Qduct_SD_83_SS and Qduct_DD_83_SS = total heat 

transferred from the ducts to the indoor 

conditioned space in cooling mode for a 

single-duct and dual-duct theoretical 

comparable single-speed portable air 

conditioner, at Test Conditions 2.E and 

2.B (the 83 °F dry-bulb outdoor 

temperature operating condition), 

respectively, calculated in section 5.5.2 

of this appendix, in Btu/h. 

Qinfiltration_SD_83_SS and Qinfiltration_DD_83_SS = 

total infiltration air heat in cooling mode 

for a single-duct and dual-duct 

theoretical comparable single-speed 

portable air conditioner, respectively, at 

Test Conditions 2.E and 2.B (the 83 °F 

dry-bulb outdoor temperature operating 

condition), respectively, calculated in 

section 5.5.3 of this appendix, in Btu/h. 


khammond on DSKJM1Z7X2PROD with PROPOSALS2
Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34973 

5.5.5 Annual Energy Consumption in 

Cooling Mode for a Theoretical 

Comparable Single-Speed Portable Air 

Conditioner at the Lower Outdoor 

Temperature Operating Condition. 

Calculate the annual energy 

consumption in cooling mode for a 

single-duct or dual-duct theoretical 

comparable single-speed portable air 

conditioner at the 83 °F dry-bulb 

outdoor temperature operating 

condition, in kWh/year, according to the 

following equations: 

For a single-duct theoretical 

comparable single-speed portable air 

conditioner: 

AECSD_83_SS = PSD_83_SS × 0.750 

For a dual-duct theoretical 

comparable single-speed portable air 

conditioner: 

AECDD_83_SS = PDD_83_SS × 0.750 

Where: 

AECSD_83_SS and AECDD_83_SS = annual 

energy consumption for a single-duct 

and dual-duct theoretical comparable 

single-speed portable air conditioner, 

respectively, in cooling mode at the 83 °F 

dry-bulb outdoor temperature operating 

condition (Test Conditions 2.E and 2.B, 

respectively), in kWh/year. 

PSD_83_SS and PDD_83_SS = electrical power 

input for a single-duct and dual-duct 

theoretical comparable single-speed 

portable air conditioner, respectively, at 

the 83 °F dry-bulb outdoor temperature 

operating condition (Test Conditions 2.E 

and 2.B, respectively) as calculated in 

section 5.5.1 of this appendix, in watts. 

0.750 = number of cooling mode hours per 

year, 750, multiplied by the conversion 

factor for watt-hours to kilowatt-hours, 

0.001 kWh/Wh. 

5.5.6 Combined Energy Efficiency 

Ratio for a Theoretical Comparable 

Single-Speed Portable Air Conditioner. 

Calculate the combined energy 

efficiency ratios for a theoretical 

comparable single-speed portable air 

conditioner without cycling losses, 

CEERSD_SS and CEERDD_SS, and with 

cycling losses, CEERSD_SS_CF and 

CEERDD_SS_CF, in Btu/Wh, according to 

the following equations: 

Where: 

CEERSD_SS and CEERSD_CF_SS = combined 

energy efficiency ratio for a single-duct 

theoretical comparable single-speed 

portable air conditioner without and 

with cycling losses, respectively, in Btu/ 

Wh. 

CEERDD_SS and CEERDD_CF_SS = combined 

energy efficiency ratio for a dual-duct 

theoretical comparable single-speed 

portable air conditioner without and 

with cycling losses, respectively, in Btu/ 

Wh. 

ACCSD_95 and ACCDD_95 = adjusted cooling 

capacity of the sample unit, as calculated 

in section 5.1.2 of this appendix, when 

tested at Test Conditions 2.D and 2.A, 

respectively, in Btu/h. 

ACCSD_83_SS and ACCSD_83_SS_CF = adjusted 

cooling capacity for a single-duct 

theoretical comparable single-speed 

portable air conditioner at the 83 °F drybulb outdoor temperature operating 

condition (Test Conditions 2.E) without 

and with cycling losses, respectively, as 

calculated in section 5.5.4 of this 

appendix, in Btu/h. 

ACCDD_83_SS and ACCDD_83_SS_CF = adjusted 

cooling capacity for a dual-duct 

theoretical comparable single-speed 

portable air conditioner at the 83 °F drybulb outdoor temperature operating 

condition (Test Condition 2.B) without 

and with cycling losses, respectively, as 

calculated in section 5.5.4 of this 

appendix, in Btu/h. 

AECSD_Full = annual energy consumption of 

the single-duct sample unit, as 

calculated in section 5.4.2.1 of this 

appendix, in kWh/year. 

AECDD_95_Full = annual energy consumption 

for the dual-duct sample unit, as 

calculated in section 5.4.2.1 of this 

appendix, in kWh/year. 

AECSD_83_SS and AECDD_83_SS = annual 

energy consumption for a single-duct 

and dual-duct theoretical comparable 

single-speed portable air conditioner, 

respectively, in cooling mode at the 83 °F 

dry-bulb outdoor temperature operating 

condition (Test Conditions 2.E and 2.B, 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.007</GPH>

For a single-duct portable air conditioner: 

[ ACC50 95 ] [ ACCso 83 ss ] 

CEERso_ss = (AECso Full + AECT) x 0.2 + (AECso 83 s~ + AECT) x 0.8 

0.750 0.750 

[ ACCso 95 ] [ ACCso 03 ss CF ] 

CEERso_ss_cF = (AECso Full + AECT) x 0.2 + (AECso 83 -ss -+ AECT) x 0.8 

0.750 0.750 

For a dual-duct portable air conditioner: 

[ ACC00 95 ] [ ACCoo 03 ss ] 

CEERoo_ss = (AECoo 95 Fu!;+ AECT) X 0.2 + (AECoo 83 s~ + AECT) X 0.8 

0.750 0.750 

[ ACC00 95 ] [ ACCoo 03 ss CF ] CEERoo_ss_cF = (AECoo 95 Fu!;+ AECT) x 0.2 + (AECoo 83 -ss -+ AECT) x 0.8 

0.750 0.750 
34974 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

respectively), calculated in section 5.5.5 

of this appendix, in kWh/year. 

AECT = total annual energy consumption 

attributed to all operating modes except 

cooling for the sample unit, calculated in 

section 5.3 of this appendix, in kWh/ 

year. 

0.750 as defined previously in this section. 

0.2 = weighting factor for the 95 °F dry-bulb 

outdoor temperature operating 

condition. 

0.8 = weighting factor for the 83 °F dry-bulb 

outdoor temperature operating 

condition. 

5.5.7 Combined-Duct Variable-Speed 

Portable Air Conditioner Performance 

Adjustment Factor. Calculate the sample 

unit’s performance adjustment factor, 

Fp, as follows: 

For a single-duct unit: 

For a dual-duct unit: 

Where: 

CEERSD_SS and CEERSD_SS_CF = combined 

energy efficiency ratio for a single-duct 

theoretical comparable single-speed 

portable air conditioner without and 

with cycling losses considered, 

respectively, calculated in section 5.5.6 

of this appendix, in Btu/Wh. 

CEERDD_SS and CEERDD_SS_CF = combined 

energy efficiency ratio for a dual-duct 

theoretical comparable single-speed 

portable air conditioner without and 

with cycling losses considered, 

respectively, calculated in section 5.5.6 

of this appendix, in Btu/Wh. 

5.5.8 Single-Duct and Dual-Duct 

Variable-Speed Portable Air Conditioner 

Combined Energy Efficiency Ratio. 

Calculate the sample unit’s final 

combined energy efficiency ratio, CEER, 

in Btu/Wh, as follows: 

For a single-duct portable air 

conditioner: 

CEERSD = CEERSD_UA × (1 + Fp_SD) 

For a dual-duct portable air 

conditioner: 

CEERDD = CEERDD_UA × (1 + Fp_DD) 

Where: 

CEERSD and CEERDD = combined energy 

efficiency ratio for a single-duct and 

dual-duct sample unit, in Btu/Wh, 

respectively. 

CEERSD_UA and CEERDD_UA= unadjusted 

combined energy efficiency ratio for a 

single-duct and dual-duct sample unit, 

respectively, calculated in section 5.4.2.1 

of this appendix, in Btu/Wh. 

Fp_SD and Fp_DD = single-duct and dual-duct 

sample unit’s performance adjustment 

factor, respectively, calculated in section 

5.5.7 of this appendix. 

9. Add appendix CC1 to subpart B of 

part 430 to read as follows: 

Appendix CC1 to Subpart B of Part 

430—Uniform Test Method for 

Measuring the Energy Consumption of 

Portable Air Conditioners 

Note: Manufacturers must use the results of 

testing under this appendix to determine 

compliance with any standards that amend 

the portable air conditioners standard at 

§ 430.32(cc) with which compliance is 

required on January 10, 2025. Any 

representation related to energy also must be 

made in accordance with the appendix that 

applies (i.e., appendix CC or this appendix). 

Manufacturers may use this appendix to 

certify compliance with any amended 

standards before the compliance date for 

those standards. 

0. Incorporation by Reference 

DOE incorporated by reference in 

§ 430.3, the entire standard for AHAM 

PAC–1–2022 Draft, ANSI/ASHRAE 

Standard 37–2009, ANSI/ASHRAE 51, 

and IEC 62301; however, only 

enumerated provisions of those 

documents are applicable to this 

appendix as follows. Treat ‘‘should’’ in 

IEC 62301 as mandatory. 

0.1 AHAM PAC–1–2022 Draft 

(a) Section 2 ‘‘Scope,’’ as specified in 

section 1 of this appendix; 

(b) Section 4 ‘‘Definitions,’’ as 

specified in sections 2 and 3 of this 

appendix; 

(c) Section 7 ‘‘Tests,’’ as specified in 

sections 3 and 4 of this appendix; 

(d) Section 8.1 ‘‘Cooling Mode,’’ as 

specified in section 5 of this appendix; 

(e) Section 9.1 ‘‘Duct Heat Transfer,’’ 

as specified in section 5.1 of this 

appendix; 

(f) Section 9.2 ‘‘Infiltration Air Heat 

Transfer,’’ as specified in section 5.1 of 

this appendix. 

0.2 ANSI/ASHRAE Standard 37–2009 

(a) Section 5.1 ‘‘Temperature 

Measuring Instruments,’’ as specified in 

section 3 of this appendix; 

(b) Section 5.3 ‘‘Air Differential 

Pressure and Airflow Measurements,’’ 

as specified in section 3 of this 

appendix; 

(c) Section 5.4 ‘‘Electrical 

Instruments,’’ as specified in section 4 

of this appendix; 

(d) Section 6.2 ‘‘Nozzle Airflow 

Measuring Apparatus,’’ as specified in 

section 4 of this appendix; 

(e) Section 6.3 ‘‘Nozzles,’’ as specified 

in section 4 of this appendix; 

(f) Section 7.3 ‘‘Indoor and Outdoor 

Air Enthalpy Methods,’’ as specified in 

section 4 of this appendix; 

(g) Section 7.7 ‘‘Airflow Rate 

Measurement,’’ as specified in section 4 

of this appendix; 

(h) Section 8.7 ‘‘Test Procedure for 

Cooling Capacity Tests,’’ as specified in 

section 4 of this appendix. 

(i) Section 9 ‘‘Data to be Recorded,’’ 

as specified in section 4 of this 

appendix; 

(j) Section 10 ‘‘Test Results,’’ as 

specified in section 4 of this appendix; 

(k) Section 11.1 ‘‘Symbols Used In 

Equations,’’ as specified in section 4 of 

this appendix. 

0.3 IEC 62301 (Edition 2.0, 2011–01) 

(a) Paragraph 5.2 ‘‘Preparation of 

product,’’ as specified in section 3 of 

this appendix; 

(b) Paragraph 4.3.2 ‘‘Supply voltage 

waveform,’’ as specified in section 3 of 

this appendix; 

(c) Paragraph 4.4 ‘‘Power measuring 

instruments,’’ as specified in section 3 

of this appendix; 

(d) Annex D, ‘‘Determination of 

Uncertainty of Measurement,’’ as 

specified in section 3 of this appendix; 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.014</GPH> EP08JN22.015</GPH>

( CEER50 ss - CEERso_ss_cF) 

Fp_so = CEERso_ss_cF 

( CEER00 ss - CEERoo_ss_cF) 

Fp_DD = CEERoo_ss_cF 
Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34975 

(e) Paragraph 4.2 ‘‘Test room,’’ as 

specified in section 3 of this appendix; 

(f) Paragraph 5.1, ‘‘General,’’ Note 1, 

as specified in section 4 of this 

appendix; 

(g) Paragraph 5.3.2 ‘‘Sampling 

method,’’ as specified in section 4 of 

this appendix. 

0.4 ANSI/ASHRAE 51 

(a) Figure 12 and Notes, ‘‘Outlet 

chamber Setup—Multiple Nozzles in 

Chamber,’’ as specified in section 4 of 

this appendix. 

(0.5) ANSI/ASHRAE 41.1 as specified 

in section 4 of this appendix. 

(0.6) ANSI/ASHRAE 41.7 as specified 

in section 4 of this appendix. 

When there is a conflict, the language 

of this appendix takes precedence over 

those documents. Any subsequent 

amendment to a referenced document 

by the standard-setting organization will 

not affect the test procedure in this 

appendix, unless and until DOE amends 

the test procedure. Material is 

incorporated as it exists on the date of 

the approval, and any change to the 

reference to the material will be 

published in the Federal Register. 

1. Scope 

Establishes test requirements to 

measure the energy performance of 

single-duct and dual-duct, and singlespeed and variable-speed portable air 

conditioners in accordance with AHAM 

PAC–1–2022 Draft, unless otherwise 

specified. 

2. Definitions 

Definitions for industry standards, 

terms, modes, calculations, etc. are in 

accordance with AHAM PAC–1–2022 

Draft. 

3. Test Apparatus and General 

Instructions 

Follow requirements and instructions 

for test conduct and test setup in 

accordance with AHAM PAC–1–2022 

Draft, including references to ASHRAE 

37 Sections 5.1 and 5.3, and IEC 62301 

Sections 4.3.2, 4.4, and 5.2, and Annex 

D. If the portable air conditioner has 

network functions, disable all network 

functions throughout testing if possible. 

If an end-user cannot disable a network 

function or the product’s user manual 

does not provide instruction for 

disabling a network function, test the 

unit with that network function in the 

factory default configuration for the 

duration of the test. 

4. Test Measurement 

Follow requirements for test 

measurement in active and inactive 

modes of operation in accordance with 

AHAM PAC–1–2022 Draft, including 

references to Sections 5.4, 6.2, 6.3, 7.3, 

7.7, 8.7, 9, 10, and 11 of ANSI/ASHRAE 

Standard 37–2009, referring to Figure 12 

of ANSI/ASHRAE 51 to determine 

placement of static pressure taps, and 

including references to ANSI/ASHRAE 

41.1–1986 and ANSI/ASHRAE 41.6– 

1994. When conducting standby power 

testing using the sampling method 

described in Section 5.3.2 of IEC 62301, 

if the standby mode is cyclic and 

irregular or unstable, collect 10 cycles 

worth of data. 

5. Calculation of Derived Results From 

Test Measurements 

Perform calculations from test 

measurements to determine Seasonally 

Adjusted Cooling Capacity (SACC) and 

Combined Energy Efficiency Ratio 

(CEER) in accordance with AHAM 

PAC–1–2022 Draft, unless otherwise 

specified in this section. 

5.1 Adjusted Cooling Capacity. 

Calculate the adjusted cooling capacities 

at the 95 °F and 83 °F operating 

conditions specified below of the 

sample unit, in Btu/h, according to the 

following equations. 

For a single-duct single-speed unit: 

ACC95 = CapacitySD ¥ Qduct_SD ¥ 

Qinfiltration_95

ACC83 = 0.6000 × (CapacitySD ¥ Qduct_

SD ¥ Qinfiltration_95) 

For a single-duct variable-speed unit: 

ACC95 = CapacitySD_Full ¥ Qduct_SDlFull

¥ Qinfiltration_95

ACC83 = CapacitySD_ Low ¥ Qduct_ SD_ Low

¥ Qinfiltration_ 83_ Low

ACC83 = CapacitySD_ Low ¥ Qduct_ SD_ Low

¥ Qinfiltration_ 83_ Low

For a dual-duct single-speed unit: 

ACC95 = CapacityDD_ 95 ¥ Qduct_ DD_ 95

¥ Qinfiltration_ 95

ACC83 = 0.5363 × (CapacityDD_83 ¥ 

Qduct_DD_83 ¥ Qinfiltration_83) 

For a dual-duct variable-speed unit: 

ACC95 = CapacityDD_ 95_ Full ¥ Qduct_ 

DD_ 95_ Full ¥ Qinfiltration_ 95

ACC83 = CapacityDD_ 83_ Low ¥ Qduct_ 

DD_ 83lLow ¥ Qinfiltration_ 83_ Low

Where: 

ACC95 and ACC83 = adjusted cooling capacity 

of the sample unit, in Btu/h, calculated 

from testing at: 

For a single-duct single-speed unit, test 

configuration 2A in Table 2 of AHAM 

PAC–1–2022 Draft. 

For a single-duct variable-speed unit, test 

configurations 2B and 2C in Table 2 of 

AHAM PAC–1–2022 Draft. 

For a dual-duct single-speed unit, test 

configurations 1A and 1B in Table 2 of 

AHAM PAC–1–2022 Draft. 

For a dual-duct variable-speed unit: test 

configurations 1C and 1E in Table 2 of 

AHAM PAC–1–2022 Draft. 

CapacitySD, CapacitySD_Full, CapacitySD_Low, 

CapacityDD_95, CapacityDD_83, 

CapacityDD_95_Full, and CapacityDD_83_

Low = cooling capacity, in Btu/h, 

measured in testing at test configuration 

2A, 2B, 2C, 1A, 1B, 1C, and 1E of Table 

2 in Section 8.1 of AHAM PAC–1–2022 

Draft, respectively. 

Qduct_SD, Qduct_SD_Full, Qduct_SD_Low, Qduct_DD_

95, Qduct_DD_83, Qduct_DD_95_Full, and Qduct_

DD_83_Low = duct heat transfer while 

operating in cooling mode for each duct 

configuration, compressor speed (where 

applicable) and temperature condition 

(where applicable), calculated in Section 

9.1 of AHAM PAC–1–2022 Draft, in Btu/ 

h. 

Qinfiltration_95, Qinfiltration_83, and Qinfiltration_83_

Low = total infiltration air heat transfer in 

cooling mode, in Btu/h, for each of the 

following compressor speed and duct 

configuration combinations: 

For a single-duct single-speed unit, use 

Qinfiltration_95 as calculated for a singleduct single-speed unit in Section 9.2 of 

AHAM PAC–1–2022 Draft. 

For a single-duct variable-speed unit, use 

Qinfiltration_95 and Qinfiltration_83_Low as 

calculated for a single-duct variablespeed unit in Section 9.2 of AHAM 

PAC–1–2022 Draft. 

For a dual-duct single-speed unit, use 

Qinfiltration_95 and Qinfiltration_83 as 

calculated for a dual-duct single-speed 

unit in Section 9.2 of AHAM PAC–1– 

2022 Draft. 

For a dual-duct variable-speed unit, use 

Qinfiltration_95 and Qinfiltration_83_Low as 

calculated for a dual-duct variable-speed 

unit in Section 9.2 of AHAM PAC–1– 

2022 Draft.0.6000 and 0.5363 = 

empirically-derived load-based capacity 

adjustment factor for a single-duct and 

dual-duct single-speed unit, respectively, 

when operating at test conditions 1B and 

2C. 

5.2 Seasonally Adjusted Cooling 

Capacity. Calculate the seasonally 

adjusted cooling capacity for the sample 

unit, SACC, in Btu/h, according to: 

SACC = ACC95 × 0.144 + ACC83 × 0.856 

Where: 

ACC95 and ACC83 = adjusted cooling 

capacities at the 95 °F and 83 °F outdoor 

temperature conditions, respectively, in 

Btu/h, calculated in section 5.1 of this 

appendix. 

0.144 = empirically-derived weighting factor 

for ACC95. 

0.856 = empirically-derived weighting factor 

for ACC83. 

5.3 Annual Energy Consumption. 

Calculate the annual energy 

consumption in each operating mode, 

AECm, in kilowatt-hours per year (kWh/ 

year). Use the following annual hours of 

operation for each mode: 


khammond on DSKJM1Z7X2PROD with PROPOSALS2
34976 Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 

TABLE 1—ANNUAL OPERATING HOURS

Operating mode Annual operating hours 

Cooling Mode Test Configurations 1A, 1C, 2A (95), 

2B ...................................... 164 

Cooling Mode Test Configurations 1B, 2A (83) ............ 586 

Cooling Mode Test Configuration 1E, 2C ..................... 977 

TABLE 1—ANNUAL OPERATING

HOURS—Continued 

Operating mode Annual operating hours 

Off-Cycle, Single-Speed ....... 391 

Off-Cycle, Variable-Speed .... 0 

Total Cooling and Off-cycle 

Mode ................................. 1,141 

Inactive or Off Mode ............. 1,844 

Calculate total annual energy 

consumption in all modes according to 

the following equations: 

Where: 

AEC95 and AEC83 = total annual energy 

consumption attributed to all modes 

representative of either the 95 °F and 

83 °F operating condition, respectively, 

in kWh/year. 

Pm = average power in each mode, in watts, 

as determined in sections 4.1.1 and 4.1.2 

of this appendix. 

tm = number of annual operating time in each 

mode, in hours. 

k = 0.001 kWh/Wh conversion factor from 

watt-hours to kilowatt-hours. 

0.82 = empirically-derived factor 

representing efficiency losses due to 

compressor cycling outside of fan 

operation 

m represents the operating mode: 

—‘‘DD_95’’ and ‘‘DD_83’’ correspond to 

cooling mode in Test Configurations 1A 

and 1B in Table 2 of AHAM PAC–1– 

2022 Draft, respectively, for dual-duct 

single-speed units, 

—‘‘DD_95_Full’’, ‘‘DD_83_Low’’ correspond 

to cooling mode in Test Configurations 

1C and 1E in Table 2 of AHAM PAC–1– 

2022 Draft, respectively, for dual-duct 

variable-speed units, 

—‘‘SD_95’’ corresponds to cooling mode in 

Test Configuration 2A in Table 2 of 

AHAM PAC–1–2022 Draft for single-duct 

single-speed units, for use when 

calculating AEC at the 95 °F outdoor 

temperature condition, 

—‘‘SD_83’’ corresponds to cooling mode in 

Test Configuration 2A in Table 2 of 

AHAM PAC–1–2022 Draft for single-duct 

single-speed units, for use when 

calculating AEC at the 83 °F outdoor 

temperature condition 

—‘‘SD_Full’’ and ‘‘SD_Low’’ correspond to 

cooling mode in Test Configurations 2B 

and 2C in Table 2 of AHAM PAC–1– 

2022 Draft, respectively, for single-duct 

variable-speed units 

—‘‘oc’’ corresponds to off-cycle, 

—‘‘ia/om’’ corresponds to inactive or off 

mode, 

5.4 Annual Cooling and Energy Ratio. 

Calculate the annualized energy 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.008</GPH>

AECia/om = Pia/om X tia/om X k 

For a single-duct single-speed unit: 

AEC95 = Psv_95 X tsD_95 X k 

Psv_a3 X tsv_a3 X k AEC83 = ------- 0.82 

For a single-duct variable-speed unit: 

AEC95 = Psv_Full X tsv_Full X k 

AECa3 = Psv_Low X tsD_Low X k 

For a dual-duct single-speed unit: 

AEC95 = Pvv_95 X tvv_95 X k 

PDD_83 X tDD_83 X k AEC83 = -------- 0.82 

For a dual-duct variable-speed unit: 

AEC95 = PvD_95_Full X tvD_95_Full X k 

AECa3 = PvD_83_Low X tDD_83_Low X k 
Federal Register / Vol. 87, No. 110 / Wednesday, June 8, 2022 / Proposed Rules 34977 

efficiency ratio, AEER, in Btu/Wh, 

according to the following equation: 

Where: 

AEER = the annualized energy efficiency 

ratio of the sample unit in Btu/Wh. 

ACC95 and ACC83 = adjusted cooling capacity 

at the 95 °F and 83 °F outdoor 

temperature conditions, respectively, 

calculated in section 5.1 of this 

appendix. 

AEC95, AEC83, AECoc, and AECia/om = total 

annual energy consumption attributed to 

all modes representative the 95 °F 

operating condition, the 83 °F operating 

condition, off-cycle mode, and inactive 

or off mode respectively, in kWh/year, 

calculated in section 5.3 of this 

appendix. 

tcm_95 = number of annual hours spent in 

cooling mode at the 95 °F operating 

condition, tDD_95 for dual-duct singlespeed units, tDD_95_Full for dual-duct 

variable-speed units, tSD_95 for singleduct single-speed units, or tSD_Full for 

single-duct variable-speed units, defined 

in section 5.3 of this appendix. 

164 = number of annual hours spent in 

cooling mode at the 95 °F operating 

condition, as shown in Table 1 of section 

5.3 of this appendix. 

tcm_83 = number of annual hours spent in 

cooling mode at the 83 °F operating 

condition, tDD_83 for dual-duct singlespeed units, tDD_83_Low for dual-duct 

variable-speed units, tSD_83 for singleduct single-speed units, or tSD_Low for 

single-duct variable-speed units, defined 

in section 5.3 of this appendix. 

0.001 = kWh/Wh conversion factor for watthours to kilowatt-hours. 

[FR Doc. 2022–11469 Filed 6–7–22; 8:45 am] 

BILLING CODE 6450–01–P 


khammond on DSKJM1Z7X2PROD with PROPOSALS2EP08JN22.009</GPH>

(ACC95 x tcm 95) + (ACCs3 x tcm s3) 

AEER = 0.001 X AEc95 + AEC83 + AEC0 c + AECia/om