A new furnace typically costs $3,500-$8,500 installed, with a national planning estimate near $5,800 for a standard gas replacement. A useful new furnace cost calculator needs the home’s heating capacity, fuel type, efficiency, installation labor, and any ductwork or venting changes; those choices can move a quote well above or below the average.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed gas furnace | $2,800 | $5,800 | $10,500 | Common 60,000-100,000 BTU replacement |
| Furnace equipment | $1,200 | $3,200 | $6,000 | Price varies by capacity and efficiency |
| Installation labor | $900 | $1,800 | $3,500 | Typically one day for a straightforward swap |
| Added duct or vent work | $0 | $900 | $4,000 | Only applies when the existing setup needs changes |
Installed furnace prices by fuel and efficiency
For a like-for-like replacement in a home with usable ducts and a compatible gas line, a standard-efficiency gas furnace commonly totals $2,800-$5,500. A high-efficiency model generally lands around $4,500-$8,500 installed, while complex conversions or extensive code and duct changes can push the project to $10,500 or more. These are planning ranges, not fixed national rates.
Electric furnaces often cost $2,000-$5,000 installed, but operating expense depends heavily on local electricity rates and climate. An oil furnace replacement commonly runs $4,500-$9,000, excluding unusual tank work. Propane systems may cost $3,500-$8,500, depending on equipment and whether the home already has a suitable tank and supply line.
For a standard gas-furnace replacement, about $5,800 is a reasonable starting budget before unusual repairs or upgrades. The estimate assumes a midrange unit, a typical 1,500-2,500-square-foot home, standard access, and no major duct redesign. Larger homes do not automatically need a larger furnace; a contractor should calculate heat loss rather than select equipment from floor area alone.
| System choice | Equipment price | Installed range | Typical use |
|---|---|---|---|
| 80% AFUE gas furnace | $1,200-$3,000 | $2,800-$5,500 | Basic replacement with compatible venting |
| 90%-96% AFUE gas furnace | $2,500-$5,500 | $4,500-$8,500 | High-efficiency condensing system |
| Electric furnace | $700-$2,500 | $2,000-$5,000 | Homes with suitable electrical service |
| Oil or propane furnace | $2,000-$5,000 | $3,500-$9,000 | Fuel-specific replacement or conversion |
Assumptions: U.S. midrange contractor pricing, standard residential equipment, normal access, and no major asbestos abatement or structural repair.
How equipment, labor, and venting shape the quote
An installer’s estimate usually combines the furnace, removal of the old unit, installation labor, startup testing, and applicable permit fees. Ask whether the quote includes a thermostat, filter rack, condensate drain, new vent pipe, disposal, and warranty registration; otherwise, apparently similar bids may cover different scopes.
| Quote component | Typical price | What changes the charge | Price basis |
|---|---|---|---|
| Furnace equipment | $1,200-$6,000 | Fuel, capacity, efficiency, brand tier | Per unit |
| Removal and installation | $900-$3,500 | Access, piping, wiring, crew time | Labor total |
| Permit and inspection | $50-$500 | City rules and project scope | Per job |
| Venting and condensate parts | $150-$1,500 | Efficiency type and vent route | Parts and labor |
| Duct repairs or modifications | $300-$3,000 | Leakage, sizing, access, number of runs | Project total |
Labor is often estimated as a fixed installation charge, although a rough comparison can use . HVAC labor rates commonly fall around $75-$150 per technician-hour, but a company’s installed price also pays for dispatch, insurance, tools, warranty administration, and business overhead. A two-person crew working 6-10 hours does not mean the quote should equal only the crew’s hourly wages.
Compare written scopes, not just the equipment brand or bottom-line number. A $4,000 bid that excludes venting, disposal, permits, or needed duct changes may ultimately cost more than a $5,000 bid that includes them.
BTU capacity and AFUE ratings that move the estimate
Capacity is measured in British thermal units per hour, or BTU/h. A common residential range is 40,000-120,000 BTU/h, but climate, insulation, windows, ceiling height, air leakage, and home layout matter. A load calculation can identify a suitable size; simply matching the old furnace can preserve an oversized or undersized system.
Equipment price can rise with capacity, but not in a straight line. A 60,000-80,000 BTU unit may fit many smaller or moderately insulated homes, while a large or cold-climate home may require 100,000 BTU/h or more. A mismatch can affect comfort, cycling, and energy use, so capacity should not be chosen solely to hit a lower quote.
AFUE, or annual fuel utilization efficiency, describes how much fuel becomes usable heat under a standard test. An 80% AFUE furnace generally costs less upfront than a 90%-96% AFUE condensing model. The higher-rated unit needs suitable venting and a condensate drain, which can add $300-$1,500 when these are not already available.
Capacity and vent compatibility can matter more to the installed quote than a small difference in advertised equipment price. For example, changing from a non-condensing furnace to a condensing model may require new PVC venting, drainage, and electrical work rather than a simple equipment swap.
Fuel type and conversion work change the total
Replacing one gas furnace with another is usually the least disruptive gas option when the existing supply, vent, electrical circuit, and ducts meet current requirements. A fuel conversion has more moving parts. Switching from oil to gas can require a gas service connection, new venting, removal or abandonment of oil equipment, and possible tank work; the added scope may total $1,500-$6,000 beyond the furnace installation.
Electric furnace pricing can look lower at purchase, but an older panel may need an upgrade if it cannot support the required circuit. Panel or service work can add roughly $1,000-$4,000, depending on the capacity change and local electrical labor. A heat pump may be an alternative, but its installed price and operating economics are not directly comparable to a furnace-only replacement because it provides heating and cooling functions.
Propane and oil estimates should specify whether the existing tank, regulators, fuel lines, and venting are included or assumed reusable. Tank removal, liner work, or replacement is a separate scope and can materially change the project total.
When a quote involves a new fuel source, request separate line items for furnace work and utility, tank, or electrical work. This makes it easier to compare a conversion with retaining the current fuel and replacing only the heating unit.
Regional labor rates and permit charges in the U.S.
Installed prices vary with local wages, contractor availability, building codes, and access to equipment. As a broad planning adjustment, dense, high-cost metro areas can run 10%-25% above a national midrange estimate. Many suburban markets sit near the reference range, while some rural areas may be 5%-15% lower, though longer travel distances or fewer competing installers can erase that difference.
Cold-climate regions may have more demand during fall and winter, and local rules may require particular venting, combustion-air, or inspection details. Permit fees often fall between $50 and $500, but the amount and requirements are determined by the local jurisdiction. A quote should state whether the contractor pulls the permit and arranges inspection.
Use regional percentages only as a budgeting adjustment; local written bids are more reliable than a national average. Ask at least two licensed contractors to price the same capacity, efficiency level, included work, and warranty terms so local labor differences can be assessed fairly.
How long installation takes and when extra fees apply
A straightforward furnace replacement commonly takes 6-10 hours with a two-person crew. A difficult basement or attic installation, new vent route, duct modifications, electrical changes, or fuel conversion can extend work to 1-2 days or longer. Labor is typically part of the project quote rather than billed as a simple hourly meter, so a longer schedule does not always translate directly into a stated labor surcharge.
Common add-ons include old-unit removal, $100-$400; a basic thermostat, $100-$400 installed; condensate pump or drain work, $150-$500; and duct sealing or repairs, $300-$2,000. A new return or supply run may cost $300-$1,000 per run, depending on length and access. After-hours emergency service can add $150-$500 or more, while a seasonal diagnostic visit before replacement may cost $75-$200.
Access problems, asbestos-containing materials, water damage, unsafe wiring, or a noncompliant flue can produce charges beyond an initial visual estimate. The contractor should document these as exclusions or allowances instead of presenting an unexplained contingency.
Confirm removal, disposal, startup testing, and inspection coordination before signing. Those items are easy to overlook when comparing a low base price with a complete replacement quote.
Three furnace estimates for different home sizes
The examples below illustrate how capacity and site conditions influence a cost calculator result. They are not fixed prices: regional wages, equipment availability, and code requirements can change totals. The capacity figures are illustrative and should be confirmed by a professional load calculation.
| Example scope | Equipment and rate | Labor and added work | Estimated total |
|---|---|---|---|
| 1,200-square-foot home, standard gas swap | 60,000 BTU, 80% AFUE, $1,800-$2,600 | 8-10 crew-hours; removal and permit, $1,000-$1,500 | $3,000-$4,600 |
| 2,000-square-foot home, high-efficiency gas | 80,000 BTU, 95% AFUE, $3,000-$4,500 | 10-12 crew-hours; venting, drain, and permit, $1,400-$2,300 | $4,400-$6,800 |
| 2,800-square-foot home, difficult replacement | 100,000 BTU, 95% AFUE, $4,000-$5,800 | 12-16 crew-hours; duct and electrical work, $2,000-$4,000 | $6,000-$9,800 |
For a quick estimate, add equipment, installation, permit, and any required modifications, then include a 5%-10% contingency if the home has not been fully inspected. A simple planning calculation could be expressed as equipment price + labor + permit + venting or duct work + contingency. Do not add a second contingency if the contractor’s written quote already includes a clearly defined allowance.
The biggest difference between these examples is not square footage alone; it is the combination of furnace size and extra installation scope. A smaller house with obsolete venting or difficult access can cost more than a larger home with a compatible, easy-to-reach system.
Ways to lower the furnace bill without cutting needed work
Keep the project close to a standard replacement when the existing fuel, ducts, venting, and electrical service are safe and correctly sized. Avoid paying for a capacity upgrade without a load calculation, and compare standard and high-efficiency models using both purchase price and expected fuel use. A higher AFUE rating is not automatically the cheapest lifetime choice in every climate or utility-rate area.
Schedule replacement before a complete breakdown when possible. Emergency work can limit equipment choices and add a dispatch charge; off-peak scheduling may also provide more time for bids, though seasonal discounts are not guaranteed. If replacement is not yet necessary, ask for a repair diagnosis and an itemized comparison rather than assuming a failing component requires a new furnace.
Get two or three written bids with the same capacity, AFUE target, thermostat scope, warranty, permit responsibility, disposal, and venting assumptions. Ask whether duct leakage or balancing should be handled as a separate project. Bundling furnace and air-conditioning work can reduce duplicated labor in some homes, but it is only cost-effective if both systems need service and the combined price is itemized.
The safest savings usually come from controlling scope and comparing complete quotes, not removing code-required work or choosing an undersized unit. Check equipment and labor warranties separately, since longer coverage may require registration or annual maintenance and may not include all service charges.