A furnace replacement cost estimate typically ranges from $3,500 to $9,500, with many standard gas-furnace installations near $6,500. Equipment capacity and efficiency, local labor rates, venting changes, and removal of the old unit have the biggest effects on the final price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed gas furnace | $3,500 | $6,500 | $12,000 | Typical replacement, including basic installation |
| Furnace equipment | $1,000 | $2,500 | $5,000 | Varies by fuel, capacity, and efficiency |
| Installation labor | $1,000 | $2,000 | $4,000 | Higher for access or system changes |
| Removal and disposal | $100 | $250 | $600 | May be included in the installation quote |
Assumptions: U.S. pricing for a residential replacement with standard access; regional rates and project scope vary.
Furnace replacement prices by home and system size
For a straightforward gas-furnace swap in an average-size home, expect roughly $3,500-$8,000 installed. A larger home needing a 100,000-120,000 BTU unit may reach $6,000-$12,000, particularly if the system needs a new vent or ductwork adjustments. Smaller electric furnaces can cost less to install, while oil systems and high-efficiency models often cost more.
A typical $6,500 estimate assumes a midrange gas furnace, standard connections, and no major duct or electrical work. Furnaces are sized to the building’s heat loss, not just square footage, so a contractor should verify capacity before pricing a replacement.
What furnace equipment and installation labor include
A written quote should separate the furnace from the work needed to install it. Equipment pricing often covers the cabinet, burner or heating elements, blower, and controls. Labor covers disconnecting the old unit, setting and connecting the new one, startup, and basic testing. Ask whether the quote includes a thermostat, permit, haul-away, and warranty registration.
| Quote item | Typical price range | What can change the charge |
|---|---|---|
| Furnace equipment | $1,000-$5,000 | Fuel type, BTU capacity, efficiency |
| Installation labor | $1,000-$4,000 | Access, connection changes, crew time |
| Thermostat and controls | $100-$700 | Basic replacement versus smart controls |
| Permit and inspection | $50-$500 | Municipality and required inspection |
| Removal and disposal | $100-$600 | Old unit weight and disposal method |
Compare what each quote includes, not just the bottom-line total. A low bid may exclude a permit, disposal, or needed venting work.
How BTU capacity and efficiency ratings change furnace price
Capacity is a major price driver: moving from a 60,000 BTU furnace to a 100,000 BTU model can add approximately $300-$1,200 to equipment pricing, depending on brand and type. Capacity should follow a load calculation; oversizing can increase upfront expense and contribute to uneven heating or short cycling.
Standard-efficiency furnaces around 80% AFUE commonly cost less than condensing models rated around 95%-98% AFUE. A high-efficiency upgrade can add about $1,000-$3,000 for equipment and installation changes, such as PVC venting and a condensate drain. Check whether the home’s venting and drainage can support the selected AFUE rating before accepting an upgrade price.
How installation hours and access affect the labor quote
A like-for-like replacement often takes a two-person crew about 6-10 hours. Difficult basement stairs, a cramped attic, corroded connections, or changes to gas, electrical, or vent lines can extend the job to 1-2 days. HVAC labor rates commonly fall around $75-$150 per worker-hour, though contractor pricing may be quoted as a fixed installation charge.
Ask the installer to identify the specific access or connection work behind any labor surcharge. A quote that lists crew size and estimated duration is easier to compare than an unexplained labor lump sum. Weekend or emergency scheduling can add roughly 10%-25% in some markets.
Which gas, electric, and oil furnace costs fit the home
Fuel availability and the existing system affect whether a lower equipment price actually means a lower installed price. Electric resistance furnaces may be less expensive to buy, but operating costs depend heavily on local electricity rates and winter temperatures. Switching fuel types can require substantial electrical, gas-line, or venting work.
| System type | Installed replacement range | Typical price consideration |
|---|---|---|
| Gas furnace | $3,500-$9,500 | Common choice where gas connections already exist |
| Electric furnace | $2,000-$7,000 | Panel or circuit upgrades may add $500-$2,500 |
| Oil furnace | $5,000-$10,000 | Tank, flue, and fuel-line condition can affect scope |
Compare installed cost and expected fuel expense together, especially when changing system type. A contractor should explain any required service upgrade rather than treating it as standard furnace work.
Ways to reduce a furnace replacement quote safely
Get at least three itemized estimates using the same capacity range, efficiency level, and work scope. Ask each contractor to price a standard-efficiency option and a high-efficiency option separately. If the existing vent and connections are serviceable and meet code, retaining them may avoid unnecessary alterations.
Control the scope before negotiating the equipment price. Avoid paying for a larger furnace without a documented sizing reason, and compare warranty terms rather than assuming a premium model is automatically the best value. Scheduling outside peak cold-weather demand may improve contractor availability, while rebates and utility incentives should be confirmed directly with the local provider.
Three furnace replacement estimates with different scopes
A basic example is a 60,000 BTU, 80% AFUE gas furnace in a home with easy access and reusable venting. Equipment at $1,800, labor of 8 hours at a blended $125 per hour, and $400 for permit and disposal total about $3,200-$4,000 after common installation charges and pricing differences.
A midrange 80,000 BTU, 96% AFUE replacement might include new PVC venting, a thermostat, and a two-person crew working 8-10 hours. Equipment and accessories may run $3,000-$4,500, labor and vent changes $2,500-$3,500, and permit and haul-away $250-$600, for an approximate total of $6,000-$8,600.
A 100,000 BTU furnace in a difficult-access home with a return-duct modification and electrical correction could cost $8,500-$12,000. The added scope may include 12-16 labor hours, $500-$1,500 in ductwork, and $300-$1,000 in electrical or vent corrections. These examples are comparison points, not fixed bids; local inspection rules and site conditions can move totals substantially.