Data / Federal rules / 2026-20517
Energy Conservation Program: Test Procedures for Commercial Warm Air Furnaces
The Energy Department published this final rule in the Federal Register on October 7, 2026. It takes effect on December 7, 2026.
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What the agency says
The Department of Energy ("DOE" or "the Department") is withdrawing the test procedure for commercial warm air furnaces adopted under the Energy Policy and Conservation Act, specifically appendix B, "Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency Two)." Upon reconsideration, DOE has determined that appendix B would have an uncertain increase in representativeness that does not outweigh the likely increase in burden. DOE has also determined that withdrawing the appendix B test procedure would be consistent with the proposed Process Rule, which states that for certain categories of equipment, including CWAFs, DOE will adopt the industry test procedure, as contemplated by EPCA, except in very limited circumstances. Commercial warm air furnaces will continue to be subject to the testing requirements of appendix A, "Uniform Test Method for Measurement of the Energy Efficiency of Commercial Warm Air Furnaces (Thermal Efficiency)."
Key facts
- Document number
- 2026-20517
- Type
- Final rule
- Action
- Final rule
- Agency
- Energy Department
- Published
- October 7, 2026
- Takes effect
- December 7, 2026
- Dates
- The effective date of this rule is December 7, 2026.
- Docket
- EERE-2025-BT-TP-0035
- Regulation ID (RIN)
- 1904-AG06
- Code of Federal Regulations
- 10 CFR 431
- Topics
- Administrative practice and procedure; Confidential business information; Incorporation by reference; Reporting and recordkeeping requirements
- Pages
- 10
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Everything from the Energy Department · Rules on administrative practice and procedure · Rules on confidential business information · Rules on incorporation by reference · Published in October 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.