G/TBT/N/USA/1822/Add.2  
 
22 June 2023  
(23-4277) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
NOTIFICATION  
Addendum  
The following communication , dated  22 June 2023, is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title:  Energy Conservation Program: Test Procedure for Consumer Water Heaters and Residential -
Duty Commercial Water Heaters  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[X] Notified measure published - date: 21 June 2023  
[X] Notified measure enters into force - date: 21 July 2023; The effective date of this rule is 
21 July 2023. The final rule changes will be mandatory for consumer water heater testing 
starting 18 December 2023 and for residential -duty commercial water heater t esting 
starting 17 June 2024. The incorporation by reference of certain material listed in this 
rule is approved by the Director of the Federal Register on 21 July 2023.  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2023-06-21/html/2023 -11429.htm  
https://www.govinfo.gov/content /pkg/FR -2023-06-21/pdf/2023 -11429.pdf  
https://members.wto.org/crnattachments/2023/TBT/USA/final_measure/23_10466_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[ ] Notified measure withdrawn or revoked - date:  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 Consumer Water Heaters 
and Residential -Duty Commercial Water Heaters  
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/1822/Add.2  
 
- 2 - 
 
  SUMMARY: This final rule incorporates by reference the latest version of the industry testing standard 
for consumer water heaters and  residential -duty commercial water heaters and adopts relevant 
portions of those standards into the Federal test procedure. In this final rule, the U.S. Department 
of Energy (DOE) is also expanding the scope of coverage of the test procedure to apply to ce rtain 
consumer water heater designs (including circulating water heaters and low -temperature water 
heaters), adding definitions for certain specialty water heaters, updating test conditions and 
tolerance requirements to reduce burden, clarifying test set -up and installation methods, addressing 
the test conduct for products which can store water at temperatures above the delivery setpoint, 
establishing an effective volume calculation, and extending untested provisions to electric 
instantaneous water heaters.  
DOE incorporates by reference the following industry standards into 10 CFR 430 : 
ANSI/ASHRAE Standard 41.1 –2020, "Standard Methods for Temperature Measurement," AN SI-
approved 30 June 2020 ("ASHRAE 41.1 –2020").  
ANSI/ASHRAE Standard 41.6 –2014, "Standard Method for Humidity Measurement," ANSI -approved 
3 July 2014 ("ASHRAE 41.6 –2014").  
ANSI/ASHRAE Standard 118.2 –2022, "Method of Testing for Rating Residential Water Heat ers and 
Residential -Duty Commercial Water Heaters," ANSI -approved 1 March 2022 ("ASHRAE 118.2 –
2022").  
Copies of ASHRAE 41.1 –2020, ASHRAE 41.6 –2014, and ASHRAE 118.2 –2022 can be obtained from 
the American Society of Heating, Refrigerating, and Air -Condition ing Engineers, Inc., (ASHRAE), 180 
Technology Parkway NW, Peachtree Corners, GA 30092, (800) 527 –4723 or (404) 636 –8400, or 
online at: http://www.ashrae.org/ . 
ASTM D2156 –09 (Reapproved 2018) "Standard Test Method for Smoke Density in Flue Gases from 
Burning Distillate Fuels," approved 1 October 2018 ("ASTM D2156 –09 (RA 2018)").  
ASTM E97–82 (Reapproved 1987) "Standard Test Methods for Directional Reflectance Factor, 45 -
Deg 0 -Deg, of Opaque Specimens by Broad -Band Filter Reflectometry," approved 29 October 1982 
and withdrawn 1991 ("ASTM E97 –1987 (W1991)").  
Copies of ASTM D2156 –09 (RA 2018) can be obtained from ASTM International (ASTM), 100 Barr 
Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428 –2959 or online at: 
https://www.astm.org/ . 
Copies of ASTM E97 –1987 (W1991) are reasonably available from standards resellers including 
GlobalSpec's Engineering 360 ( https://standards.globalspec.com/std/3801495/astm -e97-82-1987) 
and IHS Markit 
(https://.global.ihs.com/doc_detail.cfm?docum ent_name=ASTM%20E97&item_s_key=00020483 ). 
See section IV.N of the final rule  text for a further discussion of these industry standards.  
DATES: The effective date of this rule is 21 July 2023. The final rule changes will be mandatory for 
consumer water heater testing starting 18 December 2023 and for residential -duty commercial water 
heater testing starting 17 June 2024. The incorporation by reference of certain material li sted in this 
rule is approved by the Director of the Federal Register on 21 July 2023.  
This final rule and previous actions notified under the symbol G/TBT/N/USA/1822  are identified by 
Docket Number EERE -2019-BT-TP-0032. The Docket Folder is available from Regulations.gov at 
https://www.regulations.gov/docket/EERE -2019-BT-TP-0032/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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