How much does furnace replacement cost?

A typical price for furnace replacement, the things that move it, a Koira estimate for each state and links to every guide we used.

$4,800Typical, US
$2,800 to $7,250Usual range
4 guidesCombined, sources below

The figures above are the guides' range for a typical job. The calculator prices your exact job, line by line, from the same guides.

What is being replaced?
Same size as the old unit is a start. Check the model plate, or run a load calculation.
Efficiency
Two-story homes often have one upstairs and one downstairs.
Only when the old ducts are leaking, crushed or the wrong size.
Adjusts labor to your state's wages.
Central AC replacement cost
$3,700 to $8,425
Typical $6,063 (US average)
$3,700Low
$8,425High
3 tonsSize
This is a price range, not a sizing. The right size comes from a Manual J load calculation on the house, not from the old unit's label.
Free. Your numbers become an estimate you can send from your phone.

How we got this

  1. Central AC, installed3 tons: $3,650 to $8,125 (typical $5,888)Fixr's installed price by tons and HomeAdvisor's unit price by tons plus its $300 to $1,600 installation labor, averaged. Assumes the old ducts and line set are reused.
  2. Permit and inspection$50 to $300 a job (typical $175)Fixr and HomeAdvisor both give $50 to $300. Most towns require one for equipment changes.
  3. RegionUS average prices (no ZIP entered)Enter a ZIP to scale the labor part of the price to your state's wages.
  4. Total$3,700 to $8,425, typical $6,063
ItemQtyLowTypicalHigh
Central AC, 3 tons (36,000 BTU)1$3,650$5,888$8,125
Mechanical permit and inspection1$50$175$300
Total$3,700$6,063$8,425

Sources: Fixr, central air conditioner installation cost; Fixr, furnace replacement cost; Fixr, heat pump installation cost; HomeAdvisor, cost to install an AC unit; HomeAdvisor, furnace replacement cost; HomeAdvisor, heat pump cost; Today's Homeowner, furnace replacement cost; Today's Homeowner, AC installation cost; Today's Homeowner, HVAC installation cost; This Old House, HVAC replacement cost; This Old House, HVAC installation cost; This Old House, air conditioner costs; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files); US Census Bureau, 2020 ZIP Code Tabulation Area to county relationship file. Checked 2026-10-08.

Quick answer
  • Furnace replacement usually costs $2,800 to $7,250, about $4,800 typical.
  • Replacing a gas or electric furnace on existing ducts, unit and installation.
  • Price your own job with the calculator above; it breaks the job into lines.

What furnace replacement costs

Furnace replacement usually runs $2,800 to $7,250. A typical job lands near $4,800. Replacing a gas or electric furnace on existing ducts, unit and installation.

Furnace replacement, US, combined from Fixr, HomeAdvisor, This Old House and Today's Homeowner
Price
Low end$2,800
Typical$4,800
High end$7,250

The range blends Fixr, HomeAdvisor, This Old House and Today's Homeowner (method below). Where you live matters: Koira's estimate is $4,359 in Arkansas and $5,538 in Hawaii.

What drives the price

  • Fuel. Electric furnaces are cheapest to install. Gas sits in the middle. Oil is the most expensive.
  • Efficiency. High-efficiency condensing furnaces cost more and need new venting.
  • Size. The furnace is sized to the home's heat loss.
  • Ducts and venting. Changes to the flue, gas line or ducts add cost.

Furnace replacement cost by fuel

FuelPriceSource
Electric$2,000 to $7,000This Old House
Oil$6,750 to $10,000This Old House

Extra costs to plan for

ItemPriceSource
Remove and dispose of the old furnace$150 to $330HomeAdvisor

These often show up as separate lines. When you compare furnace replacement quotes, line them up item by item.

Furnace replacement cost by state

Koira estimates for each state, built from the national $2,800 to $7,250. About 40% of a furnace replacement price is labor, and only that part is scaled by the state's median wage for construction and extraction workers. A starting point, not a quote.

Furnace replacement by state, Koira estimates
StateLowTypicalHigh
Alabama$2,579$4,422$6,679
Alaska$3,102$5,318$8,033
Arizona$2,771$4,751$7,176
Arkansas$2,543$4,359$6,583
California$3,028$5,191$7,841
Colorado$2,831$4,853$7,330
Connecticut$3,027$5,190$7,839
Delaware$2,796$4,794$7,241
District of Columbia$2,999$5,141$7,765
Florida$2,608$4,471$6,754
Georgia$2,617$4,485$6,775
Hawaii$3,231$5,538$8,365
Idaho$2,736$4,691$7,085
Illinois$3,196$5,478$8,274
Indiana$2,843$4,874$7,362
Iowa$2,798$4,797$7,246
Kansas$2,714$4,652$7,027
Kentucky$2,680$4,593$6,938
Louisiana$2,619$4,490$6,782
Maine$2,814$4,825$7,287
Maryland$2,806$4,811$7,266
Massachusetts$3,137$5,378$8,123
Michigan$2,831$4,853$7,330
Minnesota$3,045$5,220$7,885
Mississippi$2,560$4,389$6,629
Missouri$2,841$4,870$7,356
Montana$2,827$4,846$7,319
Nebraska$2,692$4,614$6,969
Nevada$2,841$4,870$7,356
New Hampshire$2,810$4,817$7,276
New Jersey$3,062$5,249$7,928
New Mexico$2,618$4,489$6,780
New York$3,004$5,150$7,779
North Carolina$2,609$4,473$6,756
North Dakota$2,831$4,852$7,329
Ohio$2,849$4,884$7,377
Oklahoma$2,595$4,448$6,718
Oregon$2,924$5,012$7,570
Pennsylvania$2,818$4,832$7,298
Rhode Island$2,866$4,913$7,420
South Carolina$2,612$4,478$6,764
South Dakota$2,623$4,496$6,791
Tennessee$2,630$4,509$6,810
Texas$2,605$4,465$6,745
Utah$2,755$4,723$7,134
Vermont$2,804$4,806$7,259
Virginia$2,742$4,700$7,099
Washington$3,100$5,314$8,027
West Virginia$2,764$4,738$7,156
Wisconsin$2,877$4,932$7,450
Wyoming$2,804$4,807$7,260

Rural areas and cities in the same state can differ a lot.

How we got these numbers

GuideRangeAverageUse
Fixr$2,800 to $7,500$4,800Counted
HomeAdvisor$2,823 to $6,897Not givenCounted
This Old House$1,600 to $10,000$4,799Counted
Today's Homeowner$2,800 to $7,000$4,800Counted

How the furnace replacement range is combined: low end from the middle of the guides' lows, high end from the middle of their highs, typical from the middle of their averages (a range's midpoint where no average is given). Figures read on each guide's page on October 9, 2026.

Labor share used: 40%. Equipment is the larger part of a furnace replacement. Koira's assumption for HVAC replacements. State factor: the state's median hourly wage for construction and extraction workers over the national $28.63 (BLS, May 2025), kept between 0.7 and 1.4.

For contractors: price this job in Koira

HVAC replacements are big decisions, so good, better and best options on one estimate let the homeowner choose.

Run the numbers for a real furnace replacement in the free hvac replacement cost calculator, then save the result as an estimate. On Koira's free Office plan you build the estimate, text it, collect the deposit and turn it into an invoice when the furnace replacement is done. Price this job in Koira, free.

Sources: Fixr, furnace replacement cost; HomeAdvisor, furnace replacement cost; This Old House, furnace replacement cost; Today's Homeowner, furnace replacement cost; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files). Prices checked October 9, 2026. More for your trade: how the trade runs on Koira.

FAQ

How much does furnace replacement cost?

Furnace replacement usually costs $2,800 to $7,250, with $4,800 typical. Replacing a gas or electric furnace on existing ducts, unit and installation.

How much does a new furnace cost installed?

Fixr, This Old House and Today's Homeowner all put the average near $4,800.

How long does a furnace last?

It depends on the unit and the care it gets. Age, noise, uneven heat and rising bills are the usual signs to start pricing a replacement.

Where does furnace replacement cost the most?

Hawaii is highest in Koira's state estimates, about $5,538 typical, and Arkansas is lowest at about $4,359. Only labor is scaled by state.

How much of a furnace replacement price is labor?

About 40% in these estimates. Equipment is the larger part of a furnace replacement. Koira's assumption for HVAC replacements.

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Furnace replacement Cost: Typical Prices by State | Koira