Furnace Replacement Cost in 2026: New Furnace Price Guide
A new furnace costs $3,000 to $7,600 installed on average, with most homeowners paying around $4,700 for a gas unit. The three biggest cost drivers: fuel type (gas vs. electric vs. oil), efficiency rating (AFUE — how much fuel becomes heat), and whether you need new venting or ductwork modifications. In 2026 the Inflation Reduction Act (IRA) still offers tax credits — up to $600 for qualifying gas/oil furnaces and up to $2,000 for electric heat pumps that could replace a furnace entirely. Here’s the full breakdown.
Furnace Replacement Cost by Fuel Type
| Furnace Type | Installed Cost (2026) | Operating cost trend | Best for |
|---|---|---|---|
| Natural gas | $3,800 – $7,600 | Lowest in most markets | Homes with existing gas line |
| Electric (resistance) | $2,000 – $4,500 | Cheapest install, highest monthly bills | Mild climates or backup/supplemental |
| Electric heat pump | $4,500 – $10,000 | Low operating; eligible for up to $2,000 IRA credit | Cold-climate models now handle temps to -15°F |
| Oil | $5,000 – $9,000 | Subject to oil price swings | Northeast homes without gas |
| Propane | $3,700 – $7,000 | More expensive fuel than gas; less than oil | Rural homes without gas lines |
The heat-pump consideration: If your old furnace is 15+ years old and you’re paying for a new system anyway, heat pumps now handle cold climates effectively (cold-climate models rated to -13°F to -22°F) and qualify for the largest federal credit ($2,000). The DOE notes they can cut heating energy use 50% vs. resistance heat. A side-by-side quote (gas furnace vs. heat pump) costs nothing to request and may reveal surprising economics depending on your gas vs. electric rates.
Cost by Efficiency (AFUE Rating)
AFUE (Annual Fuel Utilization Efficiency) = percentage of fuel that becomes heat. An 80% furnace sends 20% of your fuel bill up the exhaust; a 96% unit captures nearly all of it.
| AFUE | Category | Installed cost impact | What it means practically |
|---|---|---|---|
| 80% | Standard efficiency | Baseline | Metal vent pipe (cheaper install); 20% waste |
| 90–95% | High efficiency (condensing) | +$1,000–$2,000 | PVC vent (simpler install); condensate drain required |
| 96–98%+ | Premium | +$2,000–$3,500 | Maximum savings per therm; variable-speed; quietest |
The venting transition at 90% AFUE is a real cost factor: standard furnaces use a metal chimney flue, while condensing units use PVC side-wall or roof venting. If you’re switching from 80% to 90%+ for the first time, the new PVC venting run adds $300–$800 — but the monthly savings and eliminated chimney liner maintenance often offset this within 2–3 heating seasons in cold states like Illinois, Minnesota, and Massachusetts.
What’s in the Quote (Itemized)
| Line item | Cost range | Notes |
|---|---|---|
| Furnace unit | $1,500 – $4,500 | Brand, tonnage, AFUE, variable vs. single-speed blower |
| Labor | $1,000 – $2,500 | 4–8 hours typical; BLS median HVAC wage $32.75/hr × overhead multiplier |
| New venting (if switching to high-efficiency) | $300 – $800 | PVC run from unit to exterior wall/roof |
| Gas line modifications (if needed) | $200 – $800 | Size upgrade or rerouting |
| Electrical/disconnect/thermostat | $100 – $500 | Variable-speed blowers may need new wiring |
| Permits + inspection | $100 – $300 | Required; confirms safe installation to code |
| Old unit removal + refrigerant recovery (if split system) | $50 – $500 | — |
Full system (furnace + AC): $7,000–$12,000 installed — combining saves a second labor mobilization, ensures coil/handler compatibility, and is the right call if the AC is over 12 years old. See AC replacement cost.
Federal Tax Credits and Utility Rebates (2026)
Under the Inflation Reduction Act:
- Gas/oil/propane furnaces: up to $600 tax credit for ENERGY STAR Most Efficient models (97%+ AFUE for gas)
- Electric heat pumps: up to $2,000 credit for qualifying systems (CEE Tier)
- Many utilities stack rebates ($200–$1,000+) — check your utility’s program page
These are dollar-for-dollar tax credits (not deductions) available annually. Combined with a utility rebate and off-season pricing, the net cost of a high-efficiency system can drop 15–30%.
Repair or Replace? The Decision Table
| Scenario | Decision | Why |
|---|---|---|
| Unit < 12 yrs, repair < $600 | Repair | Still productive; see furnace repair cost |
| Cracked heat exchanger (any age) | Replace | CO safety risk + repair cost rivals replacement |
| Unit 15+ yrs + $500+ repair | Replace | Cascading failures ahead; efficiency is poor |
| R-22 system needing sealed-system work | Replace | EPA phase-out makes future service prohibitive |
| Energy bills climbing year over year | Replace or audit | Old furnace + duct leaks compound; new 96% unit + duct sealing is the full fix |
Full framework: repair-or-replace-hvac.
How to Save on Furnace Replacement
- Get 3 written, itemized quotes and compare using the bid framework — prices vary 20–30% for the same unit.
- Replace in spring/summer when HVAC companies compete for work — off-season discounts of 5–15% are common.
- Claim all credits: IRA ($600 gas / $2,000 heat pump) + utility rebate + manufacturer rebate — these stack.
- Right-size with a Manual J load calculation — oversizing wastes money and causes short-cycling issues.
- Quote the heat pump option alongside gas — in electric-cheap states and with the $2,000 credit, it can be the cheaper total-cost-of-ownership path.
- Vet the installer: licensing (state guide), insurance, and contractor questions are non-negotiable — a poor install on a great unit wastes the investment.
Frequently Asked Questions
How much does it cost to replace a furnace in 2026? $3,000–$7,600 installed for most gas furnaces; $4,700 is the national average. Electric resistance is cheaper to install ($2,000–$4,500) but expensive to operate; heat pumps ($4,500–$10,000) offer the best operating costs and biggest tax credits.
How long does a furnace last? 15–20 years for gas (with annual maintenance); 20–30 for electric. Heat exchangers are the usual lifespan-ender on gas units. Plan financially around year 15 — our first-year maintenance calendar shows how to track equipment ages.
Is a high-efficiency furnace worth the extra cost? In cold climates (heating > 4 months/year), almost always yes. The fuel savings compound annually, and the IRA credit reduces the upfront premium. In mild climates with short heating seasons, the payback may exceed the furnace’s lifetime.
Can I replace just the furnace without the AC? Yes — but if the AC is also 12+ years old, combining saves a second install mobilization and ensures coil/blower compatibility. A mismatched system loses efficiency and may void warranties.
Should I consider a heat pump instead of a gas furnace? In 2026, yes — at minimum get a parallel quote. Cold-climate heat pumps now work effectively to -15°F or lower, qualify for $2,000 in federal credits (vs. $600 for gas), and can cut heating costs significantly where electricity is cheap relative to gas. The economics are location-specific.
Last updated: June 11, 2026. Prices are 2026 national averages cross-referenced with BLS wage data (May 2025), ENERGY STAR, DOE heat pump systems guidance, and IRA tax credit details. Always get written quotes from licensed installers.