CFR›Title 10›Chapter II›Part 431›10 CFR Part 431 Subpart N Citation10 CFR Part 431 Subpart NContainsSections § 431.241–§ 431.242; Subject group Energy Conservation StandardsCorpusDaily eCFRDisplayed edition2026-09-24Last updated2026-09-24 Subpart N—Unit HeatersTest Procedures [Reserved] Contents § 431.241 § 431.241 Purpose and scope. § 431.242 § 431.242 Definitions concerning unit heaters. Energy Conservation Standards Energy Conservation Standards Authority42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.Source70 FR 60418, Oct. 18, 2005, unless otherwise noted.