DOCKETED  
Docket Number:  20-AAER -02 
Project Title:  Air Filters  
TN #:  249587  
Document Title:  Notice of Approval of Regulatory Action  
Description:  Notice of approval of regulatory action for the air filters 
regulations.  
Filer:  Alex Galdamez  
Organization:  California Energy Commission  
Submitter Role:  Commission Staff   
Submission Date:  4/10/2023 3:34:12 PM  
Docketed Date:  4/10/2023  
 State of California 
Office of Administrative Law 
In re: 
California Energy Commission 
Regulatory Action: 
Title 20, California Code of Regulations 
Amend sections: 1601, 1602, 1604, 1606, 
1607 ( 
NOTICE OF APPROVAL OF REGULATORY 
ACTION 
Government Code Section 11349.3 
OAL Matter Number: 2023-0223-01 
OAL Matter Type: Regular {S} 
In this regular rulemaking the California Energy Commission is amending Appliance 
Efficiency Regulations for air filters. Specifically, the California Energy Commission is 
amending definitions, test procedures, data submittal requirements, and marking 
requirements for air filters designed for installation in residential ducted systems. 
OAL approves this regulatory action pursuant to section 11349.3 of the Government 
· Code. This regulatory action becomes effective on 7/1/2024. 
Date: April 7, 2023 
Original: Drew Bohan, Executive Director 
Copy: Corrine Fishman Stephen P. Mehlert 
Senior Attorney 
For: Kenneth J. Pogue 
Director STATEOFCALIFORNIA--OFACEOFADMINISTIIATIVEIAW bE· ')~I(' I L A D ' .. ,, 
.,;N'Oll~E PUBLICATION/REGULATl<R au ~;:;ns 0
~ 
STD.400(REV /10J2019) ~- 1•, 
. .'QAl;'Fi~· NOTICE FILE NUMBER I REGULATORY ACTION' NU-MBER 
NUMBERS· Z-2022-03 14-02 
'··---------------------OFRCE Of ADMINISTRATIVE LAW 
Electronic Submission 
RECEIVED DATE 
3/14/2022 PUBLICATION DATE 
March 25, 2022 
NOTICE 
AGENCY WITH RULEMAKING AUTHORITY 
California Energy Commission REGULATIONS 
A. PUBLICATION OF NOTICE (Complete for publication in Notice Register} 
1. SUBJECT OF NOTICE I TITLE($) FIRST SECTION AFFECTED 
Air Filters 20 1601 
3. NOTICE TYPE ,4. AGENCYCONTACTPERSON TELEPHONE NUMBER [gJ Notice re Proposed 
0 Other corrine fishman (916) 805-7452 Reaulatorv Action 
OAL USE I ACTION ON PROPOSED NOTICE NOTICE REGISTER NUMBER 
ONLY tI =~as n ::'as t1 Disapproved/ 'ZO'Z-2., 1'2--7-Withdrawn 
B. SUBMISSION OF REGULATIONS (Complete when submitting regulations) For use by Secretary of State only 
ENDORSED • FILED 
In lie office of 1"8 Se~ Of 918tt 
d the Sta18 of CaKurila 
.APR Qi :202a 
\:4rpm 
AGENCY FILE NUMBER (If any) 
20-AAER-02 
2. REQUESTcD PUBLICATION DATE 
March 25, 2022 
FAX NUMBER (Oplional) 
PUBLICATION DATE 
?) /-Z.'5 /2022-
1a SUBJECT OF REGULATION($) 
Air Filters 1b. A1.L PREVIOUS RELATED OAL REGULATORY ACTION NUMBER($) 
2. SPECIFY CALIFORNIA CODE OF REGULATIONS TTTl.E(S) AND SECTION($) (Including title 26, if toxics related) 
ADOPT 3ECTION{S) AFFECTED 
.__... {List all section number{s) t-:-,==------------ ---------------------------i n div id u a II y. Attach AMEND 
additionalsheetifneeded.) 1601, 1602, 1604, 1606, 1607 
TITLE($) REPEAL 
20 
3. TYPE OF FILING ; __ ,.~ -==-------------==-----------------==-----------==----------- -=--fvl Regular Rulemaking (Gov. □Certificate of Compliance : The agency offioer named o Emergency Readopt O Changes \Mthout 
~Code §11346) bek7.v certifies that this agency complied with the (Gov. Code, §11346.1(h)) Regulatory Effect {Cal. 
□ Resubmit1al of disapproved provisions of Gov. Code §§11346.2-11347 .3 either Code Regs., title 1, §100) 
or withdrawn nonemergency before the emergency regulation was adopted or 
filing (Gov. Code §§11349.3, within tile lime period required by statute. 0 File & Print O Print Only 
11349.4) 
□ Emergency (Gov. Code, 0 Resubmittal of disapproved or withdrawn O Other (Specify) 
§11346.1(b)) emergency filing (Gov. Code, §11346.1) ______________ _ 
4. ALL BEGINNING AND ENDING DATES OF AVAILABILITY OF MODIFIED REGULATIONS AND/OR MATERIAL ADDED TO TI-IE RULEMAKING FILE (Cal. Code Regs. tiUe 1, §44 and Gov. Code §11347.1) 
August 29 -Septembe r 13, 2022 and October 28 -November 14, 2022, and December 2 -December 20. 2022 
5. EFFECTIVE DATE OF CHANGES (Gov. Code,§§ 11343.4, 11346.1(d); Cal. Code Regs., lilJe 1, §100) 
□ Effective January 1, Apfil 1, July 1, or O Elreclive on filing with 0§100 Changes IMthout 'X'Effective othel; I 1 2024 October1 (Gov.Code§11343 .4(a)) Secretary of State Regulatory Effect ~(Specify) JU Y , 
6. CHECK IF ll-lESE REGULATIONS REQUIRE NOTICE TO, OR REVIEW, CONSULTATION , APPROVAL OR CONCURRENCE BY, ANOTI-IER AGENCY OR ENTITY D Department of Finance (Fonn STD. 399) (SAM §6660) 0 Fair Polili!:<!1 Practices Commission O State Fire Marshal 
□ Other (Specify) 
7. CONTACT PERSON I TELEPHONE NUMBER 
corrine fishman (916) 805-7452 I FAX NUMBER (Clplional) I E-MAIL ADDRESS (Clplional) 
corrine.fishman@energ y.ca.gov 
a. I certify that the attached copy of the regulation(s) is a true and correct copy 
of the regulation(s) identified on this form, that the information specified on this form 
is true and correct, J:lflc:lttll!t I am the head of the agency taking this action, 
or a designee 9.f,-the t}~d of the agency, and am authorized to make this certification . 
.... _ ,/, /'" 
SIGNATURE OFA~GENCY HEI\DOR DESIGNEE -I DATE / / / . -) / 
• •• r" t --("') / 1 ;) 
TYPED NAME AND T1TI'.E OF SIGNATORY / I 
Drew Bohan, 'Executive Director / / For use by Office of Administrative Law (OAL) only 
ENDORSED APPROVED 
APR 07 2023 
Office of Administrative Law Regulatory Language 
California Code of Regulations 
Title 20. Public Utilities and Energy 
Division 2. State Energy Resources Conservation and Development 
Commission 
Chapter 4. Energy Conservation 
Article 4. Appliance Efficiency Regulations 
" Sections 1601-1609 
As related to air filters 
Section 1601. Scope. 
This Article applies to the following types of new appliances, if they are sold or 
offered for sale in California, except those sold wholesale in California for final 
retail sale outside the state and those designed and sold exclusively for use in 
recreational vehicles, or other mobile equipment. Unless otherwise specified, 
each provision applies only to units manufactured on or after the effective date 
of the provision. 
I 
NOTE: For the applicability of these regulations to appliances installed in new 
building construction, see sections 110.0 and 110.1 of part 6 of Title 24 of the 
California Code of Regulations . 
... [skipping (a) and (b)] 
(c) Central air conditioners, which are electrically powered unitary air 
conditioners and electrically powered unitary heat pumps, except those designed 
to operate without a fan; and gas-fired air conditioners and gas-fired heat 
pumps, air filters for residential buildings for use in forced air heating or forced 
air cooling equipment, and heat pump water-heating packages . 
... [skipping "(d) Portable air conditioners, evaporative coolers ... ", through end of 
section] 
NOTE: Authority cited: Sections 25213, 25218(e), 25401.9, 25402(a)-25402(c) 
and 25960, Public Resources Code; and Sections 16, 26 and 30, Governor's 
Exec. Order No. B-29-15 (April 1, 2015). 
Reference: Sections 25216.5(d), 25401.9, 25402(a)-25402(c), 25402.5.4 and 
25960, Public Resources Code; and Section 16, Governor's Exec. Order No. B-
29-15 (April 1, 2015). 
1 Section 1602. Definitions . 
... [skipping (a) and (b)] 
( c) Air Conditioners, Air Filters, and Heat Pump Water-Heating Packages . 
... [skipping "Air Conditioner" and "Air-cooled air conditioner'1 
· "Air filter" means a-A-a disposable or reusable air-cleaning device with filtering 
media encased in a frame of a nominal depth of no greater than 6.0 inches 
installed in forced air heating or cooling equipment and used for removing 
particulate matter from the air and designed for installation in residential ducted 
systems. 
(1) Air filter does not include: 
(A) Electronic air cleaners: 
(B) Filter media sold as rolls not encased in a frame: 
(C) Air filters designed and sold exclusively for installation in products 
other than residential ducted systems . 
... [skipping "Air filter depth" to "Air-source heat pump"] 
"Basic model" of an air filter means all units of a given type of air filter. 
irrespective of the face area dimensions, that have the same depth and the same 
construction, including type and grade of air filter media, pleat spacing, pleat 
height, pleat support, and filter frame pattern . 
... [skipping "Basic model" of a federally regulated central air ... to "Dust holding 
capacity'1 
"Electronic air cleaner" means electrically powered filtration equipment that uses 
high voltage electrostatic principles to collect particulate matter. It may be of 
single-stage or multi-stage configuration. Part or all of the charging and/or 
collecting sections may be manually cleanable, automatically cleanable, or 
disposable . 
... [skipping "Energy Efficiency Ratio" to "Maximum Rated Air Flow'1 
"Minimum efficiency reporting value (MERV)" of an air filter means the composite 
particle efficiency metric defined in ANSI/ASHRAE Standard 52.2-WR2017 . 
... [skipping "Multi-head mini-split system" to "Particle size"] 
"Particle size efficiency" of an air filter" also known as "particle size removal 
efficiency"" means the fraction (percentage) of particles that are captured on the 
2 · air filter. Particle size efficiency is measured in three particle size ranges: 0.3'-1.0, 
L0-3.0, 3.0-10 micrometers (µm). Particle size efficiency_§ abbreviated as "PSE" 
in the required labels marking for air filters . 
... [skipping "Premium motor"] 
"Pressure drop" of an air filter means the drop in static pressure versus air flow 
rate across air filter media in the forced-air ventilation. heating or cooling 
equipment system . 
... [skipping "Room air conditioner" through (x) "Landscape Irrigation 
Equipment'1 
The following documents are incorporated by reference in section 1602. 
Number Tille 
... [skipping FEDERAL STATUTES AND REGULATIONS to AIR MOVEMENTAND 
CONTROL ASSOCIATION INTERNATIONAL (AMCA)] 
AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) 
ANSI/ASHRAE Standard 52.2-
2017 Method of Testing General Ventilation Air­
Cleaning Devices for Removal Efficiency by 
Particle Size 
... [skipping ANSI C78.1-1991 (R1996) to end of section] 
NOTE: Authority cited: Sections 25213, 2521 S(e), 25401.9, 25402(a)-25402(c) 
and 25960, Public Resources Code; and Sections 16, 26 and 30, Governor's 
Exec. Order No. B-29-15 (April 1, 2015). 
Reference: Sections 25216.5(d), 25401.9, 25402(a)-25402(c), 25402.5.4 and 
25960, Public Resources Code; and Section 16, Governor's Exec. Order No. B-
29-15 (April 1, 2015). 
Section 1604. Test Methods for Specific Appliances . 
... [skipping (a) and (b)] 
(c) Central Air Conditioners, Air Filters, and Heat Pump Water-Heating Packages . 
... [skipping (1) and (2)] 
(3) The test methods for air filters are shown in Table C-2 Air Filters. 
3 (A) Manufacturers shall test each basic model of air filter at dimensions 
determined by the manufacturer. 
Table C-2 Air Filter Test Methods 
Appliance Performance t:;<;:w~;,Jf( 
'~~.it~r,ia)z1?{tWfl;;11irig;i;;~t} ,, 
Air Filter Pressure Drop . 
Minimum Efficiency Reporting 
Value (MERV) 
Air Filter Particle Size Efficiency 
Dust Holding Capacity 
* MERV not reportable for models 
being tested to AHRI Standard 680 
(I-P)-2017 AHRI 680 2009 only AHRI 680 2009* AHRI Standard 
680 (I-P)-2017* or ASHRAE 
Standard 52.2 2012 ANSI/ASHRAE 
Standard 52.2-2017 
ASHRAE Standard 52.2 
~ANSI/ASHRAE Standard 52.2-
2017 
AHRI 680 2009* AHRI Standard 
680 (I-P)-2017* or ANSI/ASHRAE 
Standard 52.2-2017 ASHRAE 
Standard 52.2 2012 
AHRI 680 2009*AHRI Standard 
680 (I-P)-2017* or ANSI/ASHRAE 
Standard 52.2-2017 ASHRAE 
Standard 52.2 2012 
.(fil The following procedure shall be used to calculate the airflow rate value in 
cubic feet per minute at an initial resistance pressure difference of O.f inches 
water column: 
1. The value or airflow rate at an initial resistance of 0.1 inches water 
column shall be determined from a least-squares fit to airflow rate in cfm. 
as a function of initial resistance static pressure difference in inches water 
column. using: 
O = C x dPn. where O=airflow rate in cfm. dP=initial resistance pressure 
difference in inches water column, and C and n are the coefficients 
determined in the least squares fit. 
2. The data used for this fit shall be the following ordered pairs: (0,0). 
(initial resistance value L airflow rate value 1). (initial resistance value 2, 
airflow rate value 2). (initial resistance value 3, airflow rate value 3), 
4 (initial resistance value 4, airflow rate value 4), (initial resistance value 5, 
airflow rate value 5 (only applicable when using the ANSI/ASHRAE 
Standard 52.2-2017 test procedure)) 
3. The value for airflow rate at an initial resistance of 0.1-inch water 
column shall be calculated as: O = C x 0.1n 
Manufacturers shall test small, medium, and large size filters for each 
grade . 
... [skipping (c)(4) through (x)] 
The following documents are incorporated by reference in section 1604. 
Number Title 
... [skipping CALIFORNIA ENERGY COMMISSION TEST METHODS to UNITED 
STATES ENVIRONMENTAL PROTECTION AGENCY (EPA)] 
AIR-CONDITIONING, HEATING, AND REFRIGERATION INSTITUTE (AHRI) 
AHRI 680 2009 Standard 680 (I-P)-2017 20092017 Standard for 
Performance Rating of Residential Air Filter Equipment 
... [skipping the rest of AIR-CONDITIONING, HEATING, AND REFRIGERATION 
INSTITUTE (AHRI) to AIR MOVEMENT AND CONTROL ASSOCIATION 
INTERNATIONAL INC. (AMCA)] 
AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) 
ANSI/ASHRAE Standard 52.2-
2017 Method of Testing General Ventilation Air­
Cleaning Devices for Removal Efficiency by 
Particle Size 
... [skipping the rest of AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) 
through AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)] 
AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING 
ENGINEERS (ASHRAE) 
,5 ASHRAE 52.2 2012 Method of Testing General Ventilation Air 
Cleaning Devices for Removal Efficiency by 
Particle Size 
... [skipping ANSI/ASHRAE 118.2-1993 to end of section] 
Note: Authority cited: Sections 25213, 25218(e), 25401.9, 225402(a)-25402(c) 
and 25960, Public Resources Code; and Sections 16, 26 and 30, Governor's Exec. 
Order No. B-29-15 (April 1, 2015). Reference: Sections 25216.5(d), 25401.9, 
25402(a)-25402(c) and 25960, Public Resources Code; and Section 16, 
Governor's Exec. Order No. B-29-15 (April 1, 2015). 
Section 1606. Filing· by Manufacturers; Listing of Appliances 
in MAEDbS. 
(a) Filing of Statements. 
Each manufacturer shall electronically file with the Executive Director through 
the MAEDbS a statement for each appliance that is sold or offered for sale in 
California. The statement shall contain all of the information described in 
paragraphs (2) through ( 4) of this-subsection ,and shall meet all of the 
requirements of paragraph (1) of this subsection and all other applicable 
requirements in this Article. 
The effective dates of this section shall be the same as the effective dates 
shown in section 1605.1, 1605.2 or 1605.3 of this Article for appliances for 
which there is an energy efficiency, energy consumption, energy design, 
water efficiency, water consumption, or water design standard in section 
1605.1, 1605.2, or 1605.3 of this Article. For appliances with no energy 
efficiency, energy consumption, energy design, water efficiency, water 
consumption, or water design standard in section 1605.1, 1605.2, or 1605.3 
of this Article, the effective date of this section shall be one year after they 
are added to section 1601 of this Article, unless a different effective date is -
specified. 
EXCEPTIONS to Section 1606(a) of this Article: Section 1606(a) of this 
Article is not applicable to: 
1. external power supplies, 
2. small electric motors, 
3. a la carte chargers meeting the EXCEPTION noted in section 
1605.3(w)(2) of this Article, or 
4. general service lamps. 
(1) General Rules. 
6 C ... [skipping (A) to (H)] 
(I) Air Filters. The statement for air filters shall be for each basic 
model of air filter tested under section 1604(c)(3) of this Article . 
... [skipping (a)(2) through (a)(3)(D)] 
Table X Data Submittal Requirements 
... [skipping "All Appliances" to B "Packaged Terminal Air Conditioners and 
Packaged Terminal Heat Pumps'1 
r Aoo1ance equ1re n orma R . dlfi 10n p erm1ss1 e . "bl A nswers 
Air Filters AiF filteF sizes testeEl Small, meElitlm, aAEl laF§e 
manufactured MiAiffitlffi EffieieAE'l Re13ertiA§ Valtle 1,2, 3, 4, 5, 6, 7, 8, 9, on or after 
A13Fil 1, 2019 (MERV) (rn13ertable feF moElels testeEl te 10, H, 12, 13, 11, 15, 16, 
ASHR:AE 52.2 2012 eAl>y•) 17, 18, 19, 20, NfA July: 1, 2024 
Partiele Size EffieieAey feF 0.3 te LO µm 
13artiele size 
Partiele Size EffieieAcy feF LO to 3.0 µm 
13artiele size 
Partiele Size EfficieAE'y' feF 3.0 to 10.0 
~· µm 13article size , 
=Fest PrnceEltlFe tlseEl to EleteFmiAe aiF AH RI 680 2009, eF 
filteF efficieAC'f' 13eFfeFmaAce ASHR:AE 52.2 2012 
AiF FilteF l::eA§tl9 
AiF FilteF ViiEltl, 
AiF FilteF 8e13tl, 
AiF FilteF Faee AFea 
' 
Face Veledty UtilizeEl feF tl9e test Valtle iA feet 13eF miAtlte 
13rnceEltlFe 
( 
AiFfle'N Rate valtle 1 
AiFflew Rate valtle 2 
AiFfle'N Rate valtle 3 
AiFfle•N Rate valtle 4 
7 Airflmv Rate value 5 Maximum Rated 
Airfle'N Rate 
Initial Resistance at air flmN rate value 1 =Fest results te enc 
1,undrcdtl,s ef an Incl, ef 
VIJater Gelumn 
Initial Resistance at airflm.v rate value 2 =Fest results te enc 
1,undrcdtl,s ef an Incl, ef 
VJatcr Gelumn 
Initial Resistance at airflmv rate value 3 =Fest results ta enc 
1,undrcdtl,s Of an Incl, of 
1Nater Golumn 
Initial Resistance at airflm,v rate value 1 =Fest results te one 
1,undrcEltl,s Of an Incl, of 
Water Gelumn 
Initial Resistance at airflew rate value 5 =Fest results te one 
1,undrcdtl,s Of an Incl, of 
1Nater Golumn 
Final Resistance at tl,c 13oint 'NAerc test =Fest results te one 
is terminated and results determined 1,undrcdtl,s Of an Incl, of 
Water Gelumn 
9ust l=loldin§ Ga13acity at tl,e maximum =Fest results in multi13lcs of 
rated airflmN rate as 13ublisl,cd by t'7c enc §ram. 
manufacturer 
Airflow Rate value determined at an 
Initial Resistance ef e.1 Incl, Of V1Jater 
Golumn 
Length of tested air filter (inches) . 
Width of tested air filter (inches) 
Dcgth of tested air filter (inches) 
Face Area of tested air filter (sguare 
inches) 
Test Procedure used AHRI Standard 680 (I-P)-
20171 ANSILASHRAE 
Standard 52.2-2017 
8 Face Velocit¥ Utilized for the test 
procedure 
(feet per minute) 
Minimum Efficiency Reporting Value 
(MERV) 
(if ANS!LASHRAE Standard 52.2-2017 
was used) 
Particle Size Efficiency for 0.3 to 1.0 b!m 
particle size (percentage) 
Particle Size Efficiency for 1.0 to 3.0 b!m 
particle size (percentage) 
Particle Size Efficiency for 3.0 to 10.0 
bJm particle size (percentage) 
Airflow Rate value 1 (cubic feet per 
minute) 
Airflow Rate value 2 (cubic feet Qer 
minute) 
Airflow Rate value 3 (cubic feet per 
minute) 
Airflow Rate value 4 (cubic feet per 
minute) 
Airflow Rate value 5 (cubic feet per 
minute) 
(Maximum Airflow Rate if ANS!LASHRAE 
Standard 52.2-2017 was used) 
Calculated Airflow Rate value at an 
Initial Resistance of 0.1 inches water 
column (cubic feet per minute)7 
Initial Resistance at air flow rate value 1 
(inches water column) 
. Initial Resistance at airflow rate value 2 
(inches water column) 
Initial Resistance at airflow rate value 3 
(inches water column) 
9 Initial Resistance at airflow rate value 4 
(inches water column) 
Initial Resistance at airflow rate value 5 
(inches water column) 
(if ANSILASHRAE Standard 52.2-2017 
was used) 
Final Resistance at the goint where test 
is terminated and results determined 
(inches water column) 
Dust Holding. Cagacity (grams) 
... [skipping C "All Central Air Conditioners ... " through ~he end of U) "Small 
Volume Manufacturers ... '1 
The following documents are incorporated by reference in section 1606 . 
... [skipping CALIFORNIA ENERGY COMMISSION through FEDERAL STATUTES 
AND REGULATIONS] 
Number Title 
AIR-CONDITIONING, HEATING, AND REFRIGERATION INSTITUTE (AHRI) 
AHRI Standard 680 (I-P)-2017 2017 Standard for Performance Rating of 
Residential Air Filter Eguigment 
AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) 
ANSI/ASHRAE Standard 52.2-
2017 Method of Testing General Ventilation Air­
Cleaning Devices for Removal Efficiency by 
Particle Size 
... [skipping NATIONAL ELECTRICAL MANUFACTURER'S ASSOCIATION (NEMA) 
through the end of section] 
NOTE: Authority cited: Sections 25213, 25218(e), 25401.9, 25402(a)-25402(c) 
and 25960, Public Resources Code; and Sections 16, 26 and 30, Governor's 
Exec. Order No. B-29-15 (April 1, 2015). 
Reference: Sections 25216.5(d), 25401.9, 25402(a)-25402(c) and 25960, Public 
Resources Code; and Section 16, Governor's Exec. Order No. B-29-15 (April 1, 
10 2015). 
Section 1607. Marking of Appliances . 
... [skipping (a) through (c)] 
( d) Energy Performance Information . 
... [skipping (1) through (10)] 
(11) Air Filters. Each unit of air filters manufactured on or after April 1, 
2019 shall be marlced, permanently and legibly, on an accessible and 
conspicuous place on the edge of the filter itself or on the pleats, in 
characters of font siZe 12, •.vith the information specified in either 
section (A) or (B) belov.· as applicable to the air filter model: 
(A)Air filters for 'Nhich the reported information is determined in 
accordance ·.vith the AHRI standard 680 2009 shall be marked ·.vith · 
the follO'vving information: 
1. Particle size efficiency (PSE) of the unit in three particle size 
ranges: 0.3 1.0, 1.0 3.0, 3.0 10 micrometers (µm). 
2. Initial resistance for the range of airflm,v rates as published by 
the manufacturer, including the maximum rated airflo·N rate. 
The selected airflovvi rates shall be in multiples of 100 cfm. If the 
maximum rated airflow rate is not a multiple of 100 cfm, then 
report initial resistance at multiples of 100 cfm, and any fraction 
thereof, to include the maximum rated airflovv rate as described 
in subsections a, b, c, d, e belO'vv. · 
a. AirflO'vv Rate Value 1 (val 1) 100 cubic feet per minute 
(cfm). If 100 cfm is not within the manufacturer's published 
range of airflov.• rates for the filter, value N/A. 
b. AirflmN Rate Value 2 (val 2) 800 cubic feet per minute 
(cfm). If 800 cfm is not 'Nithin the manufacturer's published 
range of airflmN rates for the filter, value N/A. 
c. Airflo·v'v' Rate Value 3 (val 3) 1200 cubic feet per minute 
(cfm) . .If 1200 cfm is not within the manufacturer's published 
range of airflO'v'v' rates for the filter, value N/A. 
d. AirflO'vv Rate Value 1 (val 1) 1600 cubic feet per minute 
(cfm). If 1600 cfm is not ·.vithin the manufacturer's published 
range of airflovv rates for the filter, value · N/A 
e. Airflow Rate Value 5 (val 5) Maximum Rated Airflovvi Rate 
(cfm). 
3. Mark the non reported MERV information field as "N/A.1' 
11 MelW flJmi 
PSe 
{2/4} 
fva4leJ (B)Air filters for 'Nhich reported information is determined in 
accordance ·.vith ASHRAE Standard 52.2 2012 shall be marked with 
the follo·Ning information: 
1. Particle size efficiency (PSE) of the unit in three particle size 
ranges: 0.3 1.0, 1.0 3.0, 3.0 10 micrometers (µm). 
2. Initial resistance for the range of airflo1iv rates as published by 
the manufacturer, including the maximum rated airflo·N rate. 
The airflO'vv rate values shall be the maximum rated airflO'vv rate, 
and the values for 50%, 75%,. 100% and 125% of the test 
airflO'vv rate value determined in accordance with ASHRAE 52.2 
2012. as described in subsections a, b, c, d, e belO'vv. 
a. Airflmfv' Rate Value 1 (val 1) 50% of the test airflm,v rate in 
cubic feet per minute (50% of airflovo· rate value 3). 
b. Airflm,v Rate Value 2 (val 2) 7~% of the test airflmv rate in 
cubic feet per minute (75% of airflO'vv rate value 3J. 
c. AirflmN Rate Value 3-(val 3) 100% test airflO'vv rate in 
cubic feet per minute; determined as equal to selected test 
face velo,city (feet per minute) multiplied by the air filter face 
area (square feet). 
d. Airflo·N Rate Value 1 (val 1) 125% of the test airflmN rate 
in cubiC feet per minute (125% of airflmv rate value 3. 
e. Airflow Rate Value 5 (val 5) Maximum Rated AirflmN Rate 
(cfm). 
3. Minimum Efficiency Reporting Value (MERV). 
-0.304A) 
fva4leJ The information shall be disclosed in the format in Table Z. 
Table Z 
Sample Air Filter Marking 
4.0-3-,(} 3.()4() AiFf/-Ow fval-4} fval-2] ~ fval-4} ~ *Max Rated 
Rate((;~ 
-lflitial 
fva4leJ fva4leJ Resislanoe fva4leJ fva4leJ fva4leJ {va!He} fva4leJ 
fl-WGt 
If the marking on the air filter is not legible through its retail 
packaging, then the packaging shall also be labeled 'Nith the 
same information and in the same format as Table Z. The 
12 AifflGw requirements of this section shall not preclude manufacturers 
from proviciing additional information. 
(11) Air Filters. Each unit of air filters manufactured on or after July L 2024, 
shall be marked, permanently and legibly on the edge of the filter itself or on 
the pleats in characters of font size 12 or larger. with the information 
specified in either section (A) or (B) below as applicable to the air filter unit, 
and such marking shall either be visible through any retail packaging or, if it 
is not visible, it shall additionally be marked on the retail packaging in the 
same font size and format. Sample air filter package labels and air filter frame 
markings are shown in Tables Z-1 and Z-2. 
(A) Air filters for which the basic model has been tested in accordance 
with AHRI Standard 680 (I-P)-2017. 
~ 1. Air filters that have been tested and for which the reported , 
information is determined in accordance with the AHRI Standard 
680 (I-P)-2017 shall be marked with the following information: 
a. Particle size efficiency (PSE) of the unit in three particle size 
ranges: 0.3-1.0. 1.0-3.0, 3.0-10 micrometers (µm). 
b. Initial resistance for the range of airflow rates as published by 
the manufacturer, including the maximum rated airflow rate. 
The airflow rate values shall be the values for 25%, 50%. 
75%, and 100% of the maximum rated airflow rate determined 
in accordance with AHRI Standard 680 (I-P)-2017 as described 
in subsections (i), (ii). (iii). (iv) below. 
(i) Airflow Rate Value 1 (val 1) = 25% of the maximum rated 
airflow rate in cfm (25% of airflow rate of value 4). 
(ii) Airflow Rate Value 2 (val 2) =50% of the maximum rated 
airflow rate in cfm (50% of airflow rate of value 4). 
(iii) Airflow Rate Value 3 (val 3) = 75% of the maximum rated 
airflow rate in cfm (75% of airflow rate of value 4). 
(iv) Airflow Rate Value 4 (val 4) = 100% of the maximum rated 
airflow rate in cfm. 
2. Air filter sizes that have not been tested shall be marked with 
information that is based on the information for an air filter of the 
same basic model which has been tested per section 1604(c)(3) of 
this Article in accordance with the AHRI Standard 680 (I-P)-2017 
and certified to the Energy Commission per section 1606(a)(1)(I) 
13 of this Article. Information for an air filter that has not been tested 
shall be determined at a ·face velocity that is identical to the face 
velocity used for the test procedure for the tested air filter of the 
same basic model. Air filters that have not been tested shall be 
marked with the following information: 
a. Particle size efficiency (PSE) of the unit in three particle size 
ranges: 0.3-1.0, 1.0-3.0, 3.0-10 micrometers (wm). The PSE 
values for an air filter that has not been tested shall be identical 
to the PSE values determined for a tested air filter of the same 
basic model. 
b. Initial resistance values for the range of airflow rate values 1 
through 4. The initial resistance values for an air filter that has 
not been tested shall be identical to the initial resistance values 1 
through 4 determined for a tested air filter of the same basic 
model. 
c. Airflow rate values 1 through 4 for an air filter that has not been 
tested shall each be equal to the corresponding airflow rate 
va,lues 1 through 4 from a tested air filter of the same basic 
model multiplied by the face area of the filter that has not been 
tested and divided by the face area of the tested air filter of the 
same basic model. 
(B) Air filters for which the basic model has been tested in accordance 
with ANSI/ASHRAE Standard 52.2-2017. 
1. Air filters that have been tested and for which the reported 
information is determined in accordance with ANSI/ASHRAE 
Standard 52.2-2017 shall be marked with the following 
information: 
a. Particle size efficiency (PSE) of the unit in three particle size 
ranges: 0.3-1.0, 1.0-3.0, 3.0-10 micrometers (µm). 
b. Initial resistance for the range of airflow rates as published by 
the manufacturer, including the maximum rated airflow rate. 
The airflow rate values shall be the maximum rated airflow rate, 
and the values for 50%, 75%, 100% and 125% of the test 
airflow rate value determined in accordance with ANSI/ASHRAE 
52.2-2017 as described in subsections (i), (ii). (iii). (iv). (v) 
below. 
(i) Airflow Rate Value 1 (val 1) = 50% of the test airflow rate in 
cfm (50% of airflow rate value 3). 
14 (ii) Airflow Rate Value 2 (val 2) = 75% of the test airflow rate in 
cfm (75% of airflow rate value 3). 
(iii) Airflow Rate Value 3 (val 3) = 100% of the test airflow rate 
in cfm: determined as equal to selected test face velocity 
(feet per minute) multiplied by the air filter face area (square 
feet). 
(iv) Airflow Rate Value 4 (val 4) = 125% of the test airflow rate 
in cfm (125% of airflow rate value 3). 
(v) Airflow Rate va·lue 5 (val 5) = Maximum Rated Airflow Rate 
in cfm-as published by the manufacturer. 
c. Minimum Efficiency Reporting Value (MERV). The value shall be 
a whole number between 1 and 16. 
2. Air filter sizes that have not been tested shall be marked with 
information that is based on the information for an air filter of the 
same basic model which has been tested per section 1604(c)(3) of 
this Article in accordance with the ANSI/ASHRAE Standard 52.2-
2017 and certified to the Energy Commission per section 
1606(a)(1)(I) of this Article. Information for an air filter that has 
not been tested shall be determined at a face velocity that is 
identical to the face velocity used for the test procedure for the 
tested air filter of the same basic model. Air filters that have not 
been tested shall be marked with the following information: 
a. Particle size efficiency (PSE) of the unit in three particle size 
ranges: 0.3-1.0, 1.0-3.0, 3.0-10 micrometers (µm). The PSE 
values for an air filter that has not been tested shall be identical 
to the PSE values determined for a tested air filter of the same 
basic model. 
b. Initial resistance values for the range of airflow rate values 1 
through 5. The initial resistance values for an air filter that has 
not been tested shall be identical to the initial resistance values 
1 through 5 determined for a tested air filter of the same basic 
model. 
c. Airflow rate values 1 through 5. Airflow rate values 1 through 5 
for an air filter that has not been tested shall each be equal to 
the corresponding airflow rate values 1 through 5 from a tested 
air filter of the same basic model multiplied by the face area of 
the filter that has not been tested and divided by the face area 
of the tested air filter of the same basic model. 
15 d. Minimum Efficiency Reporting Value (MERV). The MERV for an 
air filter that has not been tested shall be identical to the value 
determined for a tested air filter of the same basic model. The 
value shall be a whole number between 1 and 16. 
Table Z-1: Sample Air Filter Marking (AHRI Standard 680 [I-Pl-2017) 
[val 11 [val 21 [val 31 [val 41* 
D@ll D@ll D@ll D@ll 
Table Z-2: Sample Air Filter Marking (ANSI/ASHRAE Standard 52.2-2017) 
~· ¼;j/~£H~l~J- I'l9ill IYil1Il wil fyg1iJ [valS]* 
val [val] ~ ~llfs\ ~ ~ ~ ~ ~ 
... [skipping (12) through the end of the section] 
NOTE: Authority cited: Sections 25213, 25218(e), 25401.9, 25402(a)-25402(c) 
and 25960, Public Resources Code. 
Reference: Sections 25216.5(d), 25401.9, 25402(a)-25402(c) and 25960, Public 
Resources Code. 
16 2017 Standard for 
Performance Rating of 
Residential Air Filter Equipment 
0 ANSI/ASHRAE Standard 52.2-2017 
(Supersedes ANSI/ASH RAE Standard 52.2-1012) 
lncludesANSI/ASHRAE addenda listed in Appendix H 
See Informative Appendix Hfor·approval dates by the ASHRAE Standards Committee, theASHRAE Technology C~mmittee, and 
the Ameri'tan Natfonal Standards Institute. . . ,·· 
This Standard is under continuous maintenance by a Standing Standard Pr6j~ct Cbrt,mittee (SSPC) forwhich"the Standards 
Committee has established a documented program for regular publicatipn -~faddencla or, rf:lvisio,ns, inclucj,ing.procedures for 
timely, documented, consensus action on requests for change to any part of the Standard. The chang~ ~ubmittal form, 
instructions, and deadlines may be obtained in electronic form from the ASHRAE website (www.ashrae.org) or in paper 
form from the Senior Manager of Standards. The latest edition of an ASH RAE Standard may be purchased from the 
ASH RAE website (www.ashrae.org) or from ASH RAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. 
E-mail: orders@ashrae.org. Fax: 678-539-2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for 
orders iii US arid Canada). For reprint permission, go to www.ashrae.org/permissions: 
'. ' • .,• -• , .. r. 
'. 
© 2017 ASH RAE ISSN I 041-2336 
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