CFR›Title 10›Chapter II›Part 431›Subpart D›Subject Group Test Procedures ContainsSections 431.75–431.76CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Sections 431.75 § 431.75 Materials incorporated by reference. 431.76 § 431.76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces. Previous Energy Conservation Standards Energy Conservation Standards