{"data":{"id":"us/10-cfr-431.87","jurisdiction":"us","citation":"10 CFR 431.87","heading":"Energy conservation standards and their effective dates.","body":"(a) Each commercial packaged boiler listed in table 1 of this paragraph (a) and manufactured on or after the effective date listed must meet the indicated energy conservation standard.\nTable 1 to Paragraph (a)—Commercial Packaged Boiler Energy Conservation Standards\nEquipment category Subcategory Certified rated input Efficiency level—effective date: March 2, 2012 *\nHot Water Commercial Packaged Boilers Gas-fired ≥300,000 Btu/h and ≤2,500,000 Btu/h 80.0% ET.\nHot Water Commercial Packaged Boilers Gas-fired \u003e2,500,000 Btu/h 82.0% EC.\nHot Water Commercial Packaged Boilers Oil-fired ≥300,000 Btu/h and ≤2,500,000 Btu/h 82.0% ET.\nHot Water Commercial Packaged Boilers Oil-fired \u003e2,500,000 Btu/h 84.0% EC.\nSteam Commercial Packaged Boilers Gas-fired, all, except natural draft ≥300,000 Btu/h and ≤2,500,000 Btu/h 79.0% ET.\nSteam Commercial Packaged Boilers Gas-fired, all, except natural draft \u003e2,500,000 Btu/h 79.0% ET.\nSteam Commercial Packaged Boilers Gas-fired—natural draft ≥300,000 Btu/h and ≤2,500,000 Btu/h 77.0% ET.\nSteam Commercial Packaged Boilers Gas-fired—natural draft \u003e2,500,000 Btu/h 77.0% ET.\nSteam Commercial Packaged Boilers Oil-fired ≥300,000 Btu/h and ≤2,500,000 Btu/h 81.0% ET.\nSteam Commercial Packaged Boilers Oil-fired \u003e2,500,000 Btu/h 81.0% ET.\n* Where EC is combustion efficiency and ET is thermal efficiency.\n(b) Each commercial packaged boiler listed in table 2 of this paragraph (b) and manufactured on or after the effective date listed in Table 2 must meet the indicated energy conservation standard.\nTable 2 to Paragraph (b)—Commercial Packaged Boiler Energy Conservation Standards\nEquipment category Subcategory Certified rated input Efficiency level—effective date: March 2, 2022 *\nSteam Commercial Packaged Boilers Gas-fired—natural draft ≥300,000 Btu/h and ≤2,500,000 Btu/h 79.0% ET.\nSteam Commercial Packaged Boilers Gas-fired—natural draft \u003e2,500,000 Btu/h 79.0% ET.\n* Where ET is thermal efficiency.","path":["Title 10—Energy","CHAPTER II—DEPARTMENT OF ENERGY","SUBCHAPTER D—ENERGY CONSERVATION","PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT","Subpart E—Commercial Packaged Boilers"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"5f94a8eeabab980b3ec6de643108fea0b88b2ecd4b925c5294f7ddc33c5cad4b","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-431.86","next":"us/10-cfr-appendix-a-to-subpart-e-of-part-431"},"notice":"GroundRules: Original legal text. Not legal advice."}