Appendix G1 to Part 305 - Furnaces - Gas

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Appendix G1 to Part 305 - Furnaces - Gas

Furnace type	Range of annual fuel utilization efficiencies (AFUEs)
Furnace type	Low	High
Non-Weatherized Gas Furnaces - All Capacities	80.0	98.7
Weatherized Gas Furnaces - All Capacities	81.0	95.0

[83 FR 7598, Feb. 22, 2018]

                    
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