$2,800–$8,000 to replace a gas furnace in the US, installed — $4,600 typical. An 80% AFUE model runs $2,200–$5,500, a 95%+ condensing model $3,300–$8,500, and an electric furnace $1,900–$5,600.
Gas furnace replacement: $2,800–$8,000, $4,600 typical
High-efficiency 95%+ AFUE: $3,300–$8,500; standard 80%: $2,200–$5,500
Furnace + central AC together: $6,500–$16,000
Permits and inspection: $100–$500 for a like-for-like swap, up to $1,500 where gas, venting and electrical permits are all needed
Annual furnace tune-up: $80–$450
Prices verified November 2026 · Cross-referenced against 45+ American pricing sources · See methodology
01 / PricesUSA · November 2026
Furnace replacement prices (2026)
Installed prices with removal of the old furnace. National figures, November 2026.
Furnace replacement prices (2026)Installed, low to high with the typical price marked.
Central AC + gas furnace, replaced together$9,800$6,500–$16K
Oil furnace$5,500$4,000–$10K
Gas furnace, 95%+ AFUE (PVC-vented)$5,200$3,300–$8,500
Gas furnace replacement (80–96% AFUE)$4,600$2,800–$8,000
Gas furnace, 120,000 BTU (large home)$4,300$2,400–$6,200
Gas furnace, 100,000 BTU$4,150$2,300–$6,000
Gas furnace, 60,000 BTU (smaller home)$3,650$1,900–$5,400
Gas furnace, 80% AFUE (chimney-vented)$3,600$2,200–$5,500
Electric furnace$3,500$1,900–$5,600
Chimney liner (80% furnace in an old chimney)$2,000$900–$3,800
New gas line$650$300–$1,500
Condensate drain for a 95% furnace$350$200–$600
$0$5,000$10K$15K$20K
Job
Low
Typical
High
Gas furnace replacement (80–96% AFUE)installed
$2,800
$4,600
$8,000
Gas furnace, 80% AFUE (chimney-vented)installed
$2,200
$3,600
$5,500
Gas furnace, 95%+ AFUE (PVC-vented)installed
$3,300
$5,200
$8,500
Gas furnace, 60,000 BTU (smaller home)installed
$1,900
$3,650
$5,400
Gas furnace, 100,000 BTUinstalled
$2,300
$4,150
$6,000
Gas furnace, 120,000 BTU (large home)installed
$2,400
$4,300
$6,200
Electric furnaceinstalled
$1,900
$3,500
$5,600
Oil furnaceinstalled
$4,000
$5,500
$10,000
Central AC + gas furnace, replaced togetherinstalled
$6,500
$9,800
$16,000
Chimney liner (80% furnace in an old chimney)installed
$900
$2,000
$3,800
Condensate drain for a 95% furnaceinstalled
$200
$350
$600
New gas lineinstalled
$300
$650
$1,500
Permits and inspectionper job
$100
$300
$1,500
Furnace tune-upper visit
$80
$160
$450
US prices, November 2026. Low is a simple job in a low-cost area; high is a bigger job or a high-cost city.
02 / By city195 cities priced
Does furnace replacement cost change by city?
Yes. The same job costs more where labor and rent cost more. Here's how HVAC prices in the biggest US metros compare with the US typical of $6200.
HVAC prices in the 12 biggest US metrosEach city's typical HVAC price against the US typical of $6,200.
Efficiency is the biggest choice. An 80% AFUE furnace vents through a chimney and costs $2,200–$5,500; a 95%+ condensing furnace vents through PVC pipe, needs a condensate drain and costs $3,300–$8,500. Size moves the price less than most people expect: a 60,000 BTU furnace runs $1,900–$5,400 and a 120,000 BTU unit $2,400–$6,200.
Venting is where quotes grow. Switching from an 80% to a 95% furnace means new PVC vent runs; keeping an 80% furnace in an old masonry chimney can mean a liner at $900–$3,800. A new gas line runs $300–$1,500.
02
Compare
Gas, electric or a heat pump
At 2026 US average prices, a gas furnace is the cheapest common heat to run: about $780 a year for a typical home with a 95% furnace, against about $1,050 for a heat pump and $2,650 for an electric furnace, at EIA average rates.
If your AC is also old, a dual-fuel setup (heat pump plus gas furnace) runs $7,100–$17,000 and lets you heat with electricity on mild days and gas on the coldest.
03
What the quote should include
The furnace model and AFUE, venting changes, the gas connection, the condensate drain on a 95% unit, the thermostat hookup, removal of the old unit, the permit, and a combustion and carbon monoxide check at startup.
04
Watch out
Permits and safety
Furnace replacement touches gas, venting and electrical work, so most places require a permit and inspection: about $100–$500 for a like-for-like swap, up to $1,500 where gas, venting and electrical permits are all needed. Hire a licensed contractor; a badly vented furnace is a carbon monoxide risk.
05
Compare
80% or 95% furnace: side by side
The biggest choice on a gas furnace is efficiency. It changes the vent, the drain and the gas bill.
80% AFUE furnace
95%+ AFUE furnace
Installed price
$2,200–$5,500
$3,300–$8,500
How it vents
Hot exhaust goes up a metal flue or chimney
Cool exhaust goes out plastic (PVC) pipes through a wall or roof
Drain needed?
No
Yes, for the water it makes: $200–$600
Gas used for the same heat
Baseline
About 16% less
Usually the better buy in
Mild climates, or homes where new vent pipes are hard to run
Cold climates with long heating seasons
AFUE is the share of the gas that turns into heat in your home. An 80% furnace turns 80 cents of every gas dollar into heat.
06
Compare
Old chimney? Price both paths before you choose
Keeping an 80% furnace in an old brick chimney often means adding a liner. That can make it cost about the same as a 95% furnace. Typical prices:
Line item
Keep 80%, add a liner
Switch to 95%
Furnace, installed
$3,600
$5,200
Chimney liner
$2,000
Not needed
Condensate drain
Not needed
$350
Permits and inspection
$300
$300
Total at typical prices
$5,900
$5,850
If a gas water heater shares the chimney, a 95% furnace leaves it venting alone. The chimney may then need a smaller liner, or the water heater may need to be replaced. Ask for that price in writing.
07
Worked example
Worked example: replacing an 80% furnace with a 95% furnace
A common job: the old furnace vents into a metal flue, and the new one gets PVC vent pipes. Typical US prices:
Line itemCost
95%+ AFUE gas furnace, installed with PVC venting$5,200
Condensate drain$350
Permits and inspection$300
Smart thermostat, installed (optional)$300
Total at typical prices$6,150
Add a new gas line ($300–$1,500) only if the furnace moves or the old line is too small. Removal of the old furnace is part of the installed price.
08
Watch out
The 2028 furnace rule: where it stands
A federal rule says most new indoor gas furnaces made from December 18, 2028 must be at least 95% AFUE. That would end new 80% gas furnaces for most homes.
The rule is not settled. In June 2026 the Supreme Court sent the court case back to an appeals court. Gas industry groups have asked the Department of Energy to push the date to 2030 or later. No new date has been set.
What this means for you: you can still buy and install an 80% gas furnace today. The rule covers furnaces made after the date. It does not force anyone to remove a furnace that is already installed.
09
Checklist
Check these before you sign a furnace quote
A good quote answers every item below in writing.
The furnace brand, model number and AFUE rating.
The BTU size, picked from a heat-loss calculation (Manual J), not just the old furnace's label.
How the furnace will vent: chimney, liner or new PVC pipes, and where the pipes will exit.
What happens to the water heater's venting if it shares the chimney.
Where the condensate drain goes, and how it is kept from freezing in an attic, garage or crawl space.
Whether the gas line is big enough for the new furnace.
Who pulls the permit, and that it is in the contractor's name.
A combustion test and carbon monoxide check at startup.
Removal and disposal of the old furnace.
Parts and labor warranty, and any deadline to register the furnace.
10
Watch out
Furnace replacement red flags
Be careful if you see any of these.
You are told the heat exchanger is cracked, but no one shows you a photo, a camera view or a written test result.
You are pushed to sign the same day during a cold snap, with no written price.
The plan is to vent a 95% furnace into the old chimney. A condensing furnace needs its own plastic vent pipes.
The new furnace is much bigger than the old one with no load calculation to back it up.
The contractor offers to skip the permit to save you money.
The quote promises a federal tax credit for a 2026 install. That credit ended for work done after December 31, 2025.
No one mentions a carbon monoxide test at startup.
11
Step by step
If your furnace quits in winter
Stay safe first. Then slow the sale down, even when the house is cold.
Smell gas? Get out firstLeave the house. Call your gas utility or 911 from outside. Do not switch lights on or off.
Do the free checksMake sure the thermostat is set to heat and has power. Check the filter. Check that the furnace switch is on and the breaker has not tripped.
Get a written diagnosisAsk the tech to write down what failed and the repair price. Many no-heat calls are small parts, not a new furnace.
Ask repair or replaceIf the furnace is under about 15 years old and the repair is small, fix it. If it is older and the repair is big, get replacement quotes.
Get more than one quoteEven in winter, call two or three companies. Ask each one how soon they can install.
Keep CO alarms workingMake sure you have working carbon monoxide alarms on every level and outside sleeping areas, as the CPSC advises.
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05 / Questions11 answers
Furnace replacement cost: FAQ
How much does it cost to replace a gas furnace?
$2,800–$8,000 installed, with $4,600 typical. Standard 80% models start lower; 95%+ condensing models and difficult venting push it higher.
Is a 95% furnace worth it over an 80%?
In cold climates, usually. It costs about $1,600 more installed and burns roughly 16% less gas for the same heat. In mild climates the payback is slow.
Should I replace my furnace and AC together?
If both are past about 12–15 years, yes: $6,500–$16,000 for the pair, one install and matched equipment.
How long does a furnace replacement take?
Most like-for-like swaps take one day. Switching to a high-efficiency furnace with new venting can take two.
Is there a tax credit for a new furnace in 2026?
No. The federal 25C credit covered improvements made through December 31, 2025. Some gas utilities still offer rebates on high-efficiency furnaces, so check yours.
What size furnace do I need?
It depends on your home's heat loss, not just its size. A 60,000 BTU furnace runs $1,900–$5,400, a 100,000 BTU unit $2,300–$6,000 and a 120,000 BTU unit $2,400–$6,200. Ask for a Manual J load calculation so the furnace is not oversized.
How much does an electric furnace cost?
$1,900–$5,600 installed, about $3,500 typical. It is cheaper to buy than gas, but it usually costs much more to run each winter.
How much does an oil furnace cost?
$4,000–$10,000 installed, about $5,500 typical. Oil furnaces cost more to buy and install than gas furnaces.
Are 80% furnaces being banned?
Not yet. A federal rule would require most new gas furnaces made from December 18, 2028 to be 95% AFUE, but it is back in court and a delay has been requested. You can still buy and install an 80% furnace today.
Can I replace my furnace and keep my AC?
Usually, yes. The AC's indoor coil sits on top of the furnace, so the new furnace must fit it and move enough air for it. If your AC is more than about 12–15 years old, price both together: $6,500–$16,000.
Do I need a permit to replace a furnace?
In most places, yes, because the job touches gas, venting and wiring. Permits and inspection run $100–$1,500. The contractor usually pulls the permit and adds it to the quote.
These are independent estimates built from national cost guides, local reported-job averages, manufacturer and utility pages and EIA energy prices. No contractor can pay to change them, so always get a couple of quotes. Last reviewed November 2026. Read the full methodology →