Furnace Replacement Cost (2026)
Last reviewed October 25, 2026
Furnace replacement runs $1,600–$12,000 installed depending on fuel and efficiency tier. A standard-efficiency gas furnace (~80% AFUE) averages $4,800 installed with a $3,800–$10,000 band; high-efficiency condensing units push $6,000–$12,000; electric furnaces are the cheapest swap at $1,600–$8,116. Every band below comes from a cited cost guide — nothing here is our estimate.
Installed cost by fuel & efficiency
| Fuel / tier | Installed band | Typical | Notes |
|---|---|---|---|
| Electric furnace | $1,600–$8,116 | ~$4,900 | Cheapest upfront; combined published bands (Fixr $1,800–$7,300; Angi $2,247–$8,116; HomeAdvisor swap $1,600–$4,500). Resistance heat is ~100% efficient at the unit. |
| Gas — standard efficiency (~80% AFUE) | $3,800–$10,000 | $4,800 | Fixr national average $4,800 (all fuels); Angi averages $4,814 with a $2,823–$6,896 typical band. Federal-minimum efficiency tier. |
| Gas — high efficiency (95–98% AFUE) | $6,000–$12,000 | ~$7,000 | Sits at the top of the gas band: Angi average ~$7,000, top $12,000; HomeAdvisor $7,000–$12,000. Needs PVC condensing venting. |
What moves the price
- Efficiency tier (AFUE): The single biggest swing: ~80% AFUE sits at the low end of the gas band; 95–98% condensing units push toward $12,000.
- Fuel type: Electric installs are the cheapest; gas is the mainstream mid-band; oil/propane conversions add cost.
- Venting changes: A high-efficiency condensing furnace needs new PVC venting; a straight swap reuses the existing flue.
- Repair-vs-replace: If required furnace repairs equal more than 30% of the cost of a new furnace, replacing is often the better investment (Bob Vila).
Related HVAC costs
Replacing the whole system or the other half of it? See boiler replacement cost, central AC installation cost, ductwork installation cost, and HVAC tune-up cost. The HVAC cost hub ties the cluster together.
FAQ
How much does it cost to replace a furnace?
It depends on fuel and efficiency: an electric furnace runs $1,600–$8,116 installed (typical ~$4,900), a standard-efficiency gas furnace $3,800–$10,000 (typical $4,800, per Fixr/Angi), and a high-efficiency 95–98% AFUE gas furnace $6,000–$12,000.
Is a high-efficiency furnace worth the extra cost?
High-efficiency condensing units (95–98% AFUE) run roughly $2,000–$4,000 more installed than the standard tier and need new PVC venting. Whether the fuel savings pay that back depends on your climate, gas prices, and how long you stay in the home — the cost guides we cite price the equipment, not your payback period.
Should I repair or replace my furnace?
A common threshold from Bob Vila: if the required repairs cost more than 30% of a new furnace, replacement is usually the better investment. Furnace repairs found during a tune-up typically run $100–$600, while replacement bands start around $1,600 for electric swaps.
Sources
- Angi — furnace replacement cost (avg ~$4,814, typical $2,823–$6,896; high-efficiency avg ~$7,000, top $12,000)
- Fixr — furnace installation cost (national average $4,800 all fuels; electric $1,800–$7,300)
- HomeAdvisor — furnace replacement cost (electric swap $1,600–$4,500; high-efficiency $7,000–$12,000)
- Bob Vila — furnace tune-up cost (repair-vs-replace 30% threshold; furnace repair bands $100–$600)