80% vs 96% AFUE: Choosing the Right Furnace for Kentucky Winters

A new gas furnace is a 15–20 year decision. The efficiency tier you choose affects gas bills every winter — and 96% AFUE units require PVC venting that 80% systems don't.

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When 96% AFUE pays back

If you heat heavily through Lexington winters and plan to stay in the home 10+ years, the higher-efficiency unit often pays back the premium. We'll show you real math for your home, not a generic brochure chart.