Furnace Replacement & Winterization Costs

2026 furnace cost by fuel type and efficiency

Ranges from HomeGuide, Fixr, and This Old House (2026). Actual price depends on furnace size (BTU output), your home's existing venting and gas line, ductwork condition, and regional labor rates.

A note on the electric row, because the AFUE number misleads people. Every electric furnace is 100% AFUE — it converts all the electricity it draws into heat, with nothing lost up a flue. That sounds unbeatable until you compare cost per unit of heat delivered: in most of the country electricity costs considerably more per BTU than natural gas, so the cheapest furnace to install is frequently the most expensive to run. Judge it on your own utility rates, not on the efficiency rating.

Price a replacement against your own house with our HVAC installation cost calculator, or, if the air conditioner is the same age and you are considering doing both at once, the furnace & AC replacement calculator.

Does the high-efficiency furnace pay for itself?

Going from an 80–89% AFUE furnace to a 90–95% condensing model costs roughly $1,400–$2,600 more based on the published installed ranges above. Whether that comes back to you depends on three things, in this order: how long your heating season is, what you pay for fuel, and how long you will own the house.

There is also a physical catch that surprises people mid-quote. A condensing furnace extracts so much heat from the exhaust that the flue gas is cool and acidic — it cannot share a conventional masonry chimney, and it produces condensate that has to be drained. In an older house that can mean new PVC venting through a sidewall and a condensate line to a drain, which is real money that does not appear in the equipment price. Ask any bidder to show venting as its own line item.

Furnace, boiler, or heat pump?

If the old unit is genuinely finished, this is the moment to ask whether to replace it with the same kind of thing. The installed costs overlap more than most people expect:

Furnace and heat pump ranges from Fixr, HomeGuide, and HVAC Base (2026); boiler ranges from Angi and HomeGuide (2026). Cold-climate specification per NEEP.

Boiler vs furnace comes down mostly to what your house already has. Boilers distribute heat through pipes and radiators or in-floor loops rather than ducts, so there is no ductwork to leak or replace — but converting a ducted house to hydronic (or the reverse) is a major renovation that essentially never pays for itself on running cost alone. Replace like with like unless you are already gutting the house.

Heat pumps are the genuine decision point in 2026, because the cold-weather objection is much weaker than it used to be. Units certified to NEEP's Cold Climate Air Source Heat Pump (ccASHP) specification are rated to hold useful capacity far below freezing, with cold-climate products commonly rated to around −13°F. Two caveats worth stating plainly: a heat pump also replaces your air conditioner, which changes the comparison if the AC is old too; and whether it lowers your bills depends entirely on your local electricity price against your gas or propane price. In the coldest climates, many installers still design dual-fuel systems — heat pump for most of the season, existing furnace as backup on the worst nights.

If the current system is limping rather than dead, the repair-or-replace question comes first — our HVAC repair or replace guide has the two rules that settle most of those decisions. For a ductless approach or an addition, see the mini-split installation calculator.

The federal credit is gone in 2026

This is the single biggest change from last winter, and it is worth being blunt about because a lot of contractor sales material has not caught up. The §25C Energy Efficient Home Improvement Credit — historically 30% of cost up to $600 for a qualifying furnace or boiler, and up to $2,000 for a qualifying heat pump — cannot be claimed for property placed in service after December 31, 2025. Equipment installed in 2026 does not qualify. The placed in service date controls, so a unit bought in 2025 and installed in 2026 is outside the credit.

What can still exist: state programs and utility rebates, which are administered locally and vary enormously — some are generous, some are waitlisted, some have closed. Nothing here should be treated as a promise; verify the specific program with your state energy office or utility before you factor a rebate into the decision. For the full picture of which federal credits ended and when, see our 2026 home energy tax credits guide.

Practical consequence: with no federal credit offsetting the premium, the case for the most expensive efficiency tier is weaker in 2026 than it was in 2025. Run the payback on the unsubsidized price.

The winterization checklist, priced

Everything below is cheap relative to the failure it prevents. A burst pipe or an ice dam costs multiples of the entire list.

Costs from Angi and HomeAdvisor 2026 data. Regional labor rates and home size move all of these.

For the two line items where we have our own cost models, use those instead of the national range: gutter cleaning and caulking and weatherstripping. Doing the sealing work yourself is well within reach — see our caulk and weatherstrip DIY guide and attic insulation DIY guide.

What sealing and insulating is actually worth

Most energy-saving claims you will read this autumn have no source behind them. This one does. The EPA estimates that homeowners can save an average of 15% on heating and cooling costs — about 11% of total energy costs — by air sealing the home and adding insulation in attics, floors over crawl spaces, and accessible basement spaces. The estimate comes from modelling typical composite houses across all U.S. climate zones, so it is an average rather than a promise about your house.

That is a better return per dollar than almost any equipment upgrade, and it is why the order of operations matters: seal and insulate first, then size the new heating system for the improved house. Sizing equipment for a leaky building and then fixing the leaks leaves you with an oversized furnace that short-cycles.

Price the insulation work with our attic insulation cost calculator or the blown-in insulation calculator, and see where your heating sits in the whole utility picture with the home utility cost estimator.

Replace it in October, not January

The strongest cost-control move available on a furnace is timing, and it is free. A homeowner collecting three bids in the autumn shoulder season is a customer. A homeowner with no heat in a January cold snap is a captive — taking whoever can come today, at whatever the price is, with no time to check the sizing calculation or compare the venting line item.

• A furnace at or past 15–20 years is on borrowed time — plan for it rather than waiting for it.
• Get the inspection done before the heating season starts, when a technician can actually diagnose rather than triage.
• Collect three written quotes and compare them line by line, including venting, permits, and disposal of the old unit.
• Ask for the load calculation. A furnace sized by rule of thumb is usually oversized, which costs more up front and runs worse.