Estimate what a new furnace will cost — by fuel type, efficiency, and home size — in about 15 seconds.
Most homeowners pay between $3,500 and $9,000 to replace a furnace, depending on fuel type, AFUE efficiency rating, home size, and ductwork condition. Use the calculator above for an estimate tailored to your home.
Standard-efficiency furnaces run 80-89% AFUE; high-efficiency models run 90%+ AFUE. High-efficiency units cost more upfront but use less fuel over time, especially in colder climates.
As a rule of thumb, if a furnace is over 15 years old and the repair costs more than 30-50% of a replacement, replacement is usually the better long-term value.
If your AC is also aging, bundling both replacements often costs less than two separate jobs. See our AC Replacement Cost calculator.
This calculator provides a rough estimate based on common industry pricing rules of thumb. Actual costs vary by contractor, brand, permit fees, and site conditions. Always get a written quote from a licensed local HVAC contractor before making a purchase decision.