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Gas furnace
Is a 95% AFUE Furnace Worth the Extra Cost?
Compare 80% vs 96% AFUE furnaces on fuel cost, payback period, and 15-year total cost. Worked examples for cold and mild climates at different gas prices.
Heat Pump vs Gas Furnace: Which Is Cheaper to Run?
Side-by-side operating cost comparison of heat pumps and gas furnaces by climate, electricity rate, and gas price. Break-even analysis and when each wins.