CFR›Title 40›Chapter I›Part 63›Subpart XX›Subject Group Heat Exchange System Requirements ContainsSection 63.1085CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Sections 63.1085 § 63.1085 What are the general requirements for heat exchange systems? Previous Definitions Definitions Next Implementation and Enforcement Implementation and Enforcement