WTO notification · TBT
United StatesAdopted, according to its latest notice
Official title
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing; Enforcement
The United States issued an addendum on 21 September 2026 to the earlier TBT notification G/TBT/N/USA/521. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 26 February 2010. The comment period closed on 27 May 2025.
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Manufactured housing; Trailers and semi-trailers of the caravan type, for housing or camping; Environmental protection; Construction industry; Ventilation and air-conditioning systems
Latest notice (G/TBT/N/USA/521/Rev.2/Add.4, 21 September 2026)
The latest notice says the measure was adopted or published.
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing
In this notification, the U.S. Department of Energy (''DOE'' or ''the Department'') is providing notice that the Department's Energy Conservation Standards for Manufactured Housing final rule (notified as G/TBT/N/USA/521/Add.9) published in the Federal Register on 31 May 2022, has no legal effect in light of the enactment of the 21st Century ROAD to Housing Act (''ROAD Act''). The information contained in this notification will be applicable on 18 September 2026 and will remain in effect until further notice. 91 Federal Register (FR) 59048, 18 September 2026; Title 10 Code of Federal Regulations (CFR) Part 460: This notification of legal effect and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available on Regulations.gov at 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.
Notice of proposed rulemaking - The U.S. Department of Energy (DOE) is proposing to establish enforcement procedures for its energy conservation standards for manufactured housing. DOE recently amended the compliance date for these standards in a final rule to delay compliance. DOE delayed the compliance date to allow DOE more time for this rulemaking to establish enforcement procedures that provide clarity for manufacturers and other stakeholders regarding DOE's expectations of manufacturers and DOE's plans for enforcing the standards.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/521/Rev.2/Add.4
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing
In this notification, the U.S. Department of Energy (''DOE'' or ''the Department'') is providing notice that the Department's Energy Conservation Standards for Manufactured Housing final rule (notified as G/TBT/N/USA/521/Add.9) published in the Federal Register on 31 May 2022, has no legal effect in light of the enactment of the 21st Century ROAD to Housing Act (''ROAD Act''). The information contained in this notification will be applicable on 18 September 2026 and will remain in effect until further notice. 91 Federal Register (FR) 59048, 18 September 2026; Title 10 Code of Federal Regulations (CFR) Part 460: This notification of legal effect and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available on Regulations.gov at 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.
AddendumG/TBT/N/USA/521/Rev.2/Add.3
Public Input on Energy Conservation Standards for Manufactured Housing
The U.S. Department of Energy (DOE or the Department) is issuing a request for information (''RFI'') to solicit public input regarding certain aspects of its energy conservation standards for manufactured housing. The public input received is anticipated to help guide DOE's further refinement of certain aspects of its standards for manufactured housing, as well as the supporting technical analysis, including anticipated costs and benefits. It may also serve as the basis for restructuring the approach and framework for standards that would apply to manufactured housing. DOE also seeks any additional information from the industry and public which may further inform the agency's views and regulatory program. Written comments and information are requested and will be accepted on or before 2 December 2025. 90 Federal Register (FR) 42544, 3 September 2025; Title 10 Code of Federal Regulations (CFR) Part 460: This request for information and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available on Regulations.gov at 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. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 2 December 2025. Comments received by the USA TBT Enquiry Point from WTO Members and…
AddendumG/TBT/N/USA/521/Rev.2/Add.2
Energy Conservation Standards for Manufactured Housing
The U.S. Department of Energy (DOE) is publishing this rule to amend the compliance date for its manufactured housing energy conservation standards. Previously, manufacturers had to comply with these standards on and after 1 July 2025, for Tier 2 homes and 60 days after the issuance of enforcement procedures for Tier 1 homes. DOE is delaying the Tier 2 compliance date to allow DOE more time to consider the proposed enforcement procedures and comments submitted, and to evaluate appropriate next steps that provide clarity for manufacturers and other stakeholders. The effective date of this rule is 2 July 2025. 90 Federal Register (FR) 28873, 2 July 2025; Title 10 Code of Federal Regulations (CFR) Part 460: This final rule and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available on Regulations.gov at 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.
AddendumG/TBT/N/USA/521/Rev.2/Add.1
Comment deadline: Closed on 27 May 2025
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing
The U.S. Department of Energy (DOE) is publishing a notice of proposed rulemaking (NOPR) to amend the compliance date for its manufactured housing energy conservation standards. Currently, manufacturers must comply with these standards on and after 1 July 2025, for Tier 2 homes and 60 days after the issuance of enforcement procedures for Tier 1 homes. DOE is proposing to delay the Tier 2 compliance date to allow DOE more time to consider the proposed enforcement procedures and comments submitted, and to evaluate appropriate next steps that provide clarity for manufacturers and other stakeholders. DOE will accept comments, data, and information regarding the NOPR received no later than 27 May 2025. See section IV, 'Public Participation,' for details. 90 Federal Register (FR) 17230, 24 April 2025; Title 10 Code of Federal Regulations (CFR) Part 460: This and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available on Regulations.gov at 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. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders by 4pm Eastern Time on 27 May 2025 will be shared with DOE and will also be submitted to the Docket on…
RevisionG/TBT/N/USA/521/Rev.2
Comment deadline: Closed on 26 February 2024
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing; Enforcement
Notice of proposed rulemaking - The U.S. Department of Energy (DOE) is proposing to establish enforcement procedures for its energy conservation standards for manufactured housing. DOE recently amended the compliance date for these standards in a final rule to delay compliance. DOE delayed the compliance date to allow DOE more time for this rulemaking to establish enforcement procedures that provide clarity for manufacturers and other stakeholders regarding DOE's expectations of manufacturers and DOE's plans for enforcing the standards.
AddendumG/TBT/N/USA/521/Rev.1/Add.1
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing; Extension of Compliance Date
TITLE: Energy Conservation Program: Energy Conservation Standards for Manufactured Housing; Extension of Compliance Date AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Final rule SUMMARY: The U.S. Department of Energy (DOE) is publishing a final rule to amend the compliance date for its manufactured housing energy conservation standards. Currently, manufacturers must comply with these standards on and after 31 May 2023. This final rule delays compliance until 1 July 2025, for Tier 2 homes, and until 60 days after issuance of enforcement procedures for Tier 1 homes. DOE is delaying the compliance date to allow DOE more time to establish enforcement procedures that provide clarity for manufacturers and other stakeholders regarding DOE's expectations of manufacturers and DOE's plans for enforcing the standards. DATES: This final rule is effective 30 May 2023. This final rule and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available on Regulations.gov at 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.
RevisionG/TBT/N/USA/521/Rev.1
Comment deadline: Closed on 24 April 2023
Energy Conservation Program: Energy Conservation Standards for Manufactured Housing; Extension of Compliance Date
Notice of proposed rulemaking - The U.S. Department of Energy (DOE) is publishing a notice of proposed rulemaking (NOPR) to amend the compliance date for its manufactured housing energy conservation standards. Currently, manufacturers must comply with these standards on and after 31 May 2023. DOE is proposing to delay this compliance date to allow DOE more time to establish enforcement procedures that provides clarity for manufacturers and other stakeholders.
AddendumG/TBT/N/USA/521/Add.9
Energy Efficiency Standards for Manufactured Housing (advance notice of proposed rulemaking (ANOPR) and request for comment)
TITLE: Energy Conservation Program: Energy Conservation Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Final rule SUMMARY: The U.S. Department of Energy ('DOE' or 'the Department') is publishing a final rule to establish energy conservation standards for manufactured housing pursuant to the Energy Independence and Security Act of 2007. This document presents standards based on the 2021 version of the International Energy Conservation Code ('IECC') and comments received during interagency consultation with the U.S. Department of Housing and Urban Development, as well as from stakeholders. The adopted standards would provide a set of 'tiered' standards based on size that would apply the 2021 IECC-based standards to manufactured homes, except that single-section manufactured homes would be subject to less stringent building thermal envelope requirements compared to multi-section manufactured homes. DATES: The effective date of this rule is 1 August 2022. Compliance with the adopted standards established for manufactured housing in this final rule is required on and after 31 May 2023. The incorporation by reference of certain publications listed in this rule is approved by the Director of the Federal Register on 1 August 2022. This final rule and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available from…
AddendumG/TBT/N/USA/521/Add.8
Comment deadline: Closed on 28 February 2022
Energy Efficiency Standards for Manufactured Housing (advance notice of proposed rulemaking (ANOPR) and request for comment)
TITLE: Energy Conservation Program: Energy Conservation Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Notification and reopening of public comment SUMMARY: The U.S. Department of Energy (DOE) has issued the Draft Environmental Impact Statement for Proposed Energy Conservation Standards for Manufactured Housing (DOE/EIS-0550). DOE prepared this Draft EIS in support of a rulemaking announced in the supplemental notice of proposed rulemaking (SNOPR) proposing amended energy conservation standards for manufactured housing on 26 August 2021 (August 2021 MH SNOPR notified as G/TBT/N/USA/521/Add.6). DOE invites interested parties to comment on how analysis presented in the Draft EIS should inform the final energy conservation standards for manufactured housing. DATES: DOE will accept comments, data, and information regarding how the Draft EIS should inform DOE's final energy conservation standards for manufactured housing received no later than 28 February 2022. See section III, 'Public Participation,' for details. This notification and reopening of public comment period and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available from Regulations.gov at 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…
AddendumG/TBT/N/USA/521/Add.7
Comment deadline: Closed on 26 November 2021
Energy Efficiency Standards for Manufactured Housing
TITLE: Energy Conservation Program: Energy Conservation Standards for Manufactured Housing: Availability of Provisional Analysis AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Supplemental notice of proposed rulemaking; reopening of public comment period and notification of data availability (NODA) SUMMARY: The U.S. Department of Energy (DOE) is reopening the public comment period for the supplemental notice of proposed rulemaking ('SNOPR') regarding proposals to amend energy conservation standards for manufactured housing. DOE published the SNOPR in the Federal Register on 26 August 2021. DOE is also publishing a notice of data availability (NODA) for the manufactured housing energy conservation standards rulemaking announcing the availability of updated analyses and results, and is giving interested parties an opportunity to comment on these analyses and submit additional data. DATES: The comment period for the SNOPR which published on 26 August 2021 (86 FR 47744), is reopened. DOE will accept comments, data, and information regarding the SNOPR and NODA received no later than 26 November 2021. See section IX, 'Public Participation,' for details. This supplemental notice of proposed rulemaking; reopening of public comment period and notification of data availability (NODA) and previous actions notified under the symbol G/TBT/N/USA/521 are identified by Docket Number EERE-2009-BT-BC-0021. The Docket Folder is available from…
AddendumG/TBT/N/USA/521/Add.6
Energy Efficiency Standards for Manufactured Housing
TITLE: Energy Conservation Program: Energy Conservation Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Notice of supplemental notice of proposed rulemaking and request for comment SUMMARY: The U.S. Department of Energy ('DOE' or 'the Department') is publishing a supplemental notice of proposed rulemaking ('SNOPR') to establish energy conservation standards for manufactured housing pursuant to the Energy Independence and Security Act of 2007. This document presents an updated proposal based on the 2021 version of the International Energy Conservation Code ('IECC') and comments received during interagency consultation with the U.S. Department of Housing and Urban Development, as well as from stakeholders. This proposal presents two potential approaches--one would provide a set of 'tiered' standards based on the manufacturer's retail list price for the manufactured home that would apply the 2021 IECC-based standards to manufactured homes, except that manufactured homes with a manufacturer's retail list price of $55,000 and below would be subject to less stringent building thermal envelope requirements based on manufacturer's retail list price. The alternative approach would apply standards based on the 2021 IECC to all manufactured homes, with no exceptions for building thermal envelope requirements based on manufacturer's retail list price. DATES: Meeting: DOE will hold a public meeting via webinar on…
AddendumG/TBT/N/USA/521/Add.5
Energy Efficiency Standards for Manufactured Housing
TITLE: Notice of Intent To Prepare an Environmental Impact Statement for Energy Conservation Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy ACTION: Notice of intent to prepare an environmental impact statement, to request public comments on its scope, and to conduct public scoping meetings. SUMMARY: The U.S. Department of Energy (DOE) is required, as set forth in the Energy Independence and Security Act of 2007 (EISA), to establish energy conservation standards for manufactured housing. EISA further directs DOE to base its energy conservation standards on the most recent version of the International Energy Conservation Code (IECC), and any supplements to that document, except where DOE finds that the IECC is not cost effective or where a more stringent standard would be more cost effective. DOE's Office of Energy Efficiency and Renewable Energy (EERE) is currently planning to finalize a Supplemental Notice of Proposed Rulemaking (SNOPR) (on or before 16 August 2021) for publication in the Federal Register that will propose energy conservation standards for manufactured housing based on the 2021 IECC. In accordance with the National Environmental Policy Act of 1969 (NEPA), DOE NEPA Implementing Procedures and the Council on Environmental Quality (CEQ) regulations for implementing NEPA, DOE will prepare an environmental impact statement (DOE/EIS-0550) to evaluate the potential impacts to the human…
AddendumG/TBT/N/USA/521/Add.4
TITLE: Energy Conservation Program: Energy Conservation Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Notice of data availability; request for information SUMMARY: The U.S. Department of Energy (DOE) is announcing this notice of data availability ('NODA') and soliciting public input regarding data relating to certain aspects in developing energy conservation standards for manufactured housing. These data are likely to he
AddendumG/TBT/N/USA/521/Add.3
TITLE: Energy Conservation Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Notice of proposed rulemaking and public meeting SUMMARY: The U.S. Department of Energy (DOE) is publishing a proposed rule to implement the Energy Independence and Security Act of 2007, which directs DOE to establish energy conservation standards for manufactured housing. DOE proposes to establish energy conservation standards for manufactured hous
AddendumG/TBT/N/USA/521/Add.2
TITLE: Energy Conservation Program: Energy Efficiency Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Request for information SUMMARY: The U.S. Department of Energy (DOE) has initiated the process to develop and publish energy efficiency standards for manufactured housing, as directed by the Energy Independence and Security Act of 2007 (EISA). To facilitate this process, enhance the quality of the standards and supporting
AddendumG/TBT/N/USA/521/Add.1
TITLE: Energy Efficiency Standards for Manufactured Housing AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy ACTION: Request for Information (RFI) SUMMARY: The U.S. Department of Energy (DOE) has initiated the process to develop and publish energy standards for manufactured housing, as directed by the Energy Independence and Security Act of 2007 (EISA). To facilitate this process, enhance the quality of the standards and supporting documentation, and to allow intere
Regular notificationG/TBT/N/USA/521
Comment deadline: Closed on 24 March 2010
Energy Efficiency Standards for Manufactured Housing (advance notice of proposed rulemaking (ANOPR) and request for comment) (2 pages, English)
The U.S. Department of Energy (DOE) has initiated the process to develop and publish energy standards for manufactured housing as directed by the Energy Independence and Security Act (EISA) of 2007. To facilitate this process, enhance the quality of the standards and supporting documentation, and to allow interested parties to provide suggestions, comments and information, DOE is publishing this advance notice of proposed rulemaking. As the energy efficiency standards would cover new manufactured housing, DOE is interested in information that relates to the design, construction, financing, operating costs, and other areas of relevance to establishing and implementing such standards. This notice identifies several areas on which DOE is particularly interested in receiving information; however, any input and suggestions considered relevant to the topic are welcome.
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