{"data":{"id":"us/16-cfr-appendix-g1-to-part-305","jurisdiction":"us","citation":"16 CFR Appendix G1 to Part 305","heading":"Appendix G1 to Part 305—Furnaces—Gas","body":"Furnace type Range of annual fuel utilization efficiencies (AFUEs)\nLow High\nNon-Weatherized Gas Furnaces—All Capacities 80.0 99.0\nWeatherized Gas Furnaces—All Capacities 81.0 95.0","path":["Title 16—Commercial Practices","CHAPTER I—FEDERAL TRADE COMMISSION","SUBCHAPTER C—REGULATIONS UNDER SPECIFIC ACTS OF CONGRESS","PART 305—ENERGY AND WATER USE LABELING FOR CONSUMER PRODUCTS UNDER THE ENERGY POLICY AND CONSERVATION ACT (“ENERGY LABELING RULE”)"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-16.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:29Z","sha256":"faca1549eb85095af377debe3e04fc17a39eb92a59cd1448ef00c22418d489aa","source_id":"us-cfr","stale":true,"prev":"us/16-cfr-appendix-f2-to-part-305","next":"us/16-cfr-appendix-g2-to-part-305"},"notice":"GroundRules: Original legal text. Not legal advice."}