{"data":{"id":"us/10-cfr-431.76","jurisdiction":"us","citation":"10 CFR 431.76","heading":"Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.","body":"(a) Scope. This section prescribes the test requirements used to measure the energy efficiency of commercial warm air furnaces with a rated maximum input of 225,000 Btu per hour or more.\n(b) Testing and calculations—(1) Thermal efficiency. Test in accordance with appendix A to subpart D of this part when making representations of thermal efficiency.\n(2) Thermal efficiency two. Test in accordance with appendix B to subpart D of this part when making representations of thermal efficiency two.","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 D—Commercial Warm Air Furnaces"],"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":"6291dea39de44a4893205d6277e6a04b00be317db1df15f1fa21ee1f8910b85a","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-431.75","next":"us/10-cfr-431.77"},"notice":"GroundRules: Original legal text. Not legal advice."}