CFR›Title 10›Chapter II›Part 431›Subpart E›Subject Group Test Procedures ContainsSections 431.85–431.86CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Sections 431.85 § 431.85 Materials incorporated by reference. 431.86 § 431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers. Previous Energy Efficiency Standards Energy Efficiency Standards