Furnace replacement cost calculator
A new gas furnace by size and efficiency, at your state's HVAC wages.
Estimated cost
Typical installed cost
$4,500
- Furnace:
- $2,100
- Labor, removal, materials:
- $2,400
8 in 10 jobsLow$4,150High$5,350
NREL's price data covers 80% to 97% AFUE, so this is priced as a 97% furnace.
Labor at the US median wage for HVAC technicians, $29.33 an hour (BLS, May 2025).
The typical figure is the median of the National Renewable Energy Laboratory's installed-cost data for a gas furnace of this size and efficiency; the range spans its 10th to 90th percentile. See the methodology for every source and formula.
Furnace cost by size and efficiency
| Furnace | Typical | Range |
|---|---|---|
| 60,000 BTU/h, 80% AFUE | $3,600 | $3,450 - $4,250 |
| 60,000 BTU/h, 96% AFUE | $4,350 | $4,050 - $5,100 |
| 80,000 BTU/h, 80% AFUE | $3,750 | $3,550 - $4,500 |
| 80,000 BTU/h, 96% AFUE | $4,500 | $4,150 - $5,350 |
| 100,000 BTU/h, 96% AFUE | $4,650 | $4,250 - $5,600 |
| 120,000 BTU/h, 96% AFUE | $4,800 | $4,350 - $5,850 |
US average, installed, replacing an existing furnace, in today's dollars.
80% or 95% AFUE?
AFUE is the share of the gas's energy that ends up as heat in your home over a season. An 80% furnace vents hot exhaust up a metal flue. Furnaces above about 90% are condensing: they pull so much heat out of the exhaust that water condenses, so they vent through plastic pipe and need a drain. The higher-efficiency furnace costs more to buy, and if your home has an 80% furnace today, the switch can add venting and drain work that this estimate does not include.
Whether the extra efficiency pays back depends on how cold your winters are and what you pay for gas. In a long heating season it uses noticeably less gas; in a mild climate the savings are small.
What size do you need?
Furnaces are rated by input in BTU per hour; the model number usually shows it, such as 080 for 80,000. Size should come from a load calculation (ACCA Manual J) of your house. An oversized furnace short-cycles and costs more to buy without making the house more comfortable. If your current furnace kept the house warm, its size is a reasonable starting point, but a contractor should check, especially if you have added insulation or new windows since.
How your state changes the price
HVAC technicians earn a median $29.33 an hour in the US (May 2025, Bureau of Labor Statistics), from Arkansas ($23.13) in the lowest-paid state to District of Columbia ($40.57) in the highest. The calculator scales the labor part of each estimate by your state's median.
Gas furnace (80,000 BTU/h, 96% AFUE) replacement cost in all 50 states and DC
| State | Typical | Range |
|---|---|---|
| Arkansas | $4,000 | $3,600 - $4,850 |
| Alabama | $4,000 | $3,650 - $4,850 |
| Mississippi | $4,000 | $3,650 - $4,850 |
| West Virginia | $4,050 | $3,650 - $4,850 |
| New Mexico | $4,100 | $3,700 - $4,900 |
| Wyoming | $4,250 | $3,900 - $5,100 |
| Tennessee | $4,300 | $3,900 - $5,100 |
| Idaho | $4,300 | $3,950 - $5,150 |
| Georgia | $4,350 | $3,950 - $5,150 |
| South Carolina | $4,350 | $3,950 - $5,150 |
| Florida | $4,350 | $3,950 - $5,150 |
| North Carolina | $4,350 | $4,000 - $5,200 |
| Oklahoma | $4,400 | $4,000 - $5,200 |
| Texas | $4,400 | $4,000 - $5,200 |
| Kentucky | $4,400 | $4,050 - $5,250 |
| Louisiana | $4,400 | $4,050 - $5,250 |
| Utah | $4,400 | $4,050 - $5,250 |
| Arizona | $4,450 | $4,100 - $5,300 |
| Virginia | $4,450 | $4,100 - $5,300 |
| Nebraska | $4,450 | $4,100 - $5,300 |
| Missouri | $4,450 | $4,100 - $5,300 |
| Indiana | $4,500 | $4,100 - $5,300 |
| Kansas | $4,500 | $4,100 - $5,300 |
| Nevada | $4,500 | $4,100 - $5,300 |
| Iowa | $4,500 | $4,150 - $5,350 |
| Michigan | $4,500 | $4,150 - $5,350 |
| Montana | $4,500 | $4,150 - $5,350 |
| South Dakota | $4,550 | $4,150 - $5,350 |
| Wisconsin | $4,550 | $4,150 - $5,350 |
| Vermont | $4,550 | $4,200 - $5,400 |
| Delaware | $4,550 | $4,200 - $5,400 |
| Pennsylvania | $4,550 | $4,200 - $5,400 |
| Ohio | $4,550 | $4,200 - $5,400 |
| Oregon | $4,600 | $4,200 - $5,400 |
| Maine | $4,600 | $4,250 - $5,450 |
| Colorado | $4,700 | $4,300 - $5,500 |
| Hawaii | $4,700 | $4,300 - $5,500 |
| Rhode Island | $4,750 | $4,400 - $5,600 |
| Maryland | $4,850 | $4,500 - $5,700 |
| California | $5,000 | $4,600 - $5,800 |
| New Hampshire | $5,050 | $4,650 - $5,850 |
| New York | $5,050 | $4,700 - $5,900 |
| New Jersey | $5,050 | $4,700 - $5,900 |
| North Dakota | $5,050 | $4,700 - $5,900 |
| Washington | $5,100 | $4,750 - $5,950 |
| Minnesota | $5,150 | $4,750 - $5,950 |
| Connecticut | $5,150 | $4,750 - $5,950 |
| Massachusetts | $5,150 | $4,800 - $6,000 |
| Illinois | $5,150 | $4,800 - $6,000 |
| Alaska | $5,150 | $4,800 - $6,000 |
| District of Columbia | $5,450 | $5,050 - $6,300 |
What can push a quote higher
- New venting or a chimney liner when the old flue no longer fits the new furnace.
- A condensate drain or pump for a condensing furnace.
- Gas line, electrical or duct changes, and replacing the AC coil at the same time.
- Tight access, such as an attic or crawlspace, and local permit fees.
NREL puts the typical life of a gas furnace at about 21 years.
Tax credits
The federal Energy Efficient Home Improvement Credit, which covered part of the cost of a qualifying high-efficiency furnace, applies only to improvements made through 31st Dec. 2025, according to the IRS. Check with your gas utility for any rebate. The estimates here are before any rebate.
Questions and answers
How much does a new furnace cost?
An 80,000 BTU gas furnace at 96% AFUE costs about $4,500 installed at the US average, with 8 in 10 jobs between $4,150 and $5,350, in NREL's cost data adjusted to today's dollars. Smaller and 80% AFUE furnaces cost less.
Should I buy an 80% or a 95% AFUE furnace?
A 95% furnace burns less gas but costs more and needs plastic venting and a condensate drain. It pays back fastest in cold climates with long heating seasons. In a mild climate, the savings may not cover the higher price for many years.
How long does a furnace last?
NREL's database puts the typical life of a gas furnace at about 21 years.
Why do furnace quotes vary so much?
Beyond the furnace itself, quotes differ on venting, gas and electrical work, ductwork, access and whether the AC coil is replaced at the same time. Ask each contractor to list these separately and to quote the same size and AFUE.