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 Lexington winter — and 96% AFUE units require PVC venting that 80% systems don't.

Explore furnace installation options — we show real payback math for your home, not a generic brochure chart.

80% AFUE: when it still makes sense

80% furnaces use existing metal flues and cost less upfront. They're a reasonable choice for basements with easy vent access, shorter ownership timelines, or tight replacement budgets in older Central Kentucky homes.

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. Variable-speed blowers also improve comfort and humidity control.

• 96% units vent through PVC — plan routing before you buy
• Condensing furnaces produce condensate — needs a drain path
• Pair with a smart thermostat and maintenance plan for best results

Get a recommendation for your home

We install both tiers across Fayette and Scott counties. Request a free estimate or learn about our maintenance club to protect your new system.