Embeddable calculator
Furnace Cost Calculator
Estimate furnace replacement cost by equipment type, efficiency tier, installation scope, and state.
Equipment
Installation
Gas is the most common replacement path. Electric is usually cheaper upfront. Oil and propane often cost more because of fuel and venting requirements.
Use replacement if the new furnace can connect to the current system. Choose ductwork or fuel conversion when the job changes more than the furnace cabinet.
Furnace size is usually estimated from square footage and climate. We use a broad rule of thumb and show the suggested BTU band, but a contractor should still run a load calculation.
sqft
High-efficiency furnaces and older chimneys often need new venting or liner work. This is a common reason quotes jump after inspection.
Standard models cost less upfront. High-efficiency and premium furnaces cost more but can save on fuel in colder climates.
Emergency no-heat replacements usually cost more because winter demand, after-hours dispatch, and limited scheduling reduce your negotiating room.
Brand affects equipment pricing more than labor. Premium brands usually add comfort features, longer warranties, or higher-end controls.
We use state context to adjust labor and market pressure. It also changes the BTU recommendation because heating loads vary more by climate than AC loads do.
Use contingency when the house is older, the vent path is uncertain, or you suspect panel, gas-line, or duct issues may appear after teardown.
Enter your project details above to see a cost estimate.