CFR›Title 10›Chapter II›Part 431›Subpart N ContainsSections 431.241–431.242; Subject group Energy Conservation StandardsCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart N—Unit Heaters Contents 431.241 § 431.241 Purpose and scope. 431.242 § 431.242 Definitions concerning unit heaters. Energy Conservation Standards Energy Conservation Standards Section 431.246 Source70 FR 60418, Oct. 18, 2005, unless otherwise noted. Previous M Subpart M—Traffic Signal Modules and Pedestrian Modules Next O Subpart O—Commercial Prerinse Spray Valves