G/TBT/N/USA/1747/Add.2  
 
2 August 2022  
(22-5783) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  2 August 2022, is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title:  Energy Conservation Program: Test Procedure for Dehumidifying Direct Expansion -Dedicated 
Outdoor Air Systems  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[X] Notified measure published - date: 27 July 2022  
[X] Notified measure enters into force - date: 26 August 2022; The effective date of this rule 
is 26 August 2022. The incorporation by reference of certain publications listed in the 
rule is approved by the Director of the Federal Register on 26 August 2022. 
Representations with respect to energy use or efficiency of direct expansion -dedicated 
outdoor air systems must be based on testing conducted in accordance with this final 
rule on or after 24 July 2023.  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2022-07-27/html/2022 -15493.htm  
https://www.govinfo.gov/content/pkg/FR -2022-07-27/pdf/2022 -15493.pdf  
https://members.wto.org/crnattachments/2022/TBT/USA/final_measure/22_5098_00_
e.pdf 
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[ ] Content or scope of notified measure changed  and text available from1:  
New deadline for comments (if applicable):   
[ ] Interpretive guidance issued and text available from1:  
[ ] Other:  
 
Description:  TITLE: Energy Conservation Program: Test Procedure for Direct Expansion - Dedicated 
Outdoor Air Systems  
AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy  
ACTION: Final rule  
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1747/Add.2  
 
- 2 - 
 
  SUMMARY: The U.S. Department of Energy ("DOE") is publishing a final rule to establish definitions 
for "direct expansion -dedicated outdoor air systems" ("DX -DOASes") and "unitary dedicated outdoor 
air systems" ("unitary DOASes"). Unitary DOASes are a category of small, large, and very large 
commercial package air conditioning and heating equipment under the Energy Policy and 
Conservation Act, as amended. In add ition, DOE is establishing a test procedure to measure the 
energy efficiency of DX -DOASes, which aligns with the most recent version of the relevant industry 
consensus test standards for DX -DOASes, with certain minor modifications. Lastly, DOE is adopting 
supporting definitions, energy efficiency metrics for dehumidification and heating modes, and 
provisions governing public representations as part of this rulemaking.  
DATES: The effective date of this rule is 26 August 2022. The incorporation by reference o f certain 
publications listed in the rule is approved by the Director of the Federal Register on 26 August 2022. 
Representations with respect to energy use or efficiency of direct expansion -dedicated outdoor air 
systems must be based on testing conducted i n accordance with this final rule on or after 24 July 
2023.  
This final rule and previous actions notified under the symbol G/TBT/N/USA/1747  are identified by 
Docket Numbe r EERE -2017-BT-TP-0018. The Docket Folder is available from Regulations.gov at 
https://www.regulations.gov/docket/EERE -2017-BT-TP-0018/document  and provides access to 
primary and supporting documents as well as comments received. Documents are also accessible 
from Regulations.gov  by searching the Docket Number.  
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