Gas Furnace Cost (2026)
The most common home heating system, burning natural gas to push warm air through your ducts. Cost turns on capacity and AFUE efficiency; it is affordable and powerful in cold climates but needs gas service and a separate AC for cooling.
Gas Furnace cost estimate
| Item | Estimated range |
|---|---|
| Typical system, 2,000 sq ft home | $3,500 – $8,000 |
Ranges are national estimates. Use the calculator for a figure adjusted to your project and city.
Where your money goes
For a $5,800 gas furnace, the bill breaks down roughly as below. Shares are trade-typical estimates and shift with equipment, home and region.
| Cost component | Share | Est. amount |
|---|---|---|
| Equipment (condenser/furnace/air handler) | 55% | $3,200 |
| Labor & installation | 28% | $1,600 |
| Ductwork & modifications | 8% | $500 |
| Permits, overhead & warranty | 9% | $500 |
What drives the price
- Heating capacity (BTU)
- AFUE efficiency
- Venting and gas line
- Home size
Pros
- Strong, fast heat in cold climates
- Low operating cost where gas is cheap
- Mature, widely serviced
Cons
- Heats only — needs separate cooling
- Requires a gas line and venting
- Combustion safety and maintenance
Typical lifespan: 15–20 years
What the price usually includes
- Load calculation (Manual J) and sizing
- Equipment (condenser, furnace or air handler)
- Removal of the old system
- Installation, refrigerant and electrical
- New thermostat and startup testing
- Permit, inspection and warranties
How to save
- Get three or more itemized quotes; compare SEER2/AFUE, not just price
- Insist on a Manual J load calc — oversizing wastes money
- Buy in the off-season (spring or fall) for better pricing
- Check manufacturer and utility rebates (federal 25C credit ended 2025)
- Past ~12–15 years, replacing usually beats repeated repairs
- Bundle AC and furnace replacement to save on labor
Estimate your HVAC cost
Enter your home size and city for a range specific to you.
Frequently asked questions
How much does gas furnace cost?
A typical system, 2,000 sq ft home runs about $3,500 to $8,000 installed, depending on size, your home and local labor rates.
How long does gas furnace last?
About 15–20 years with proper installation and maintenance.