If you're replacing your heating system — or building new — you've probably run into the heat pump vs furnace debate. It used to be simple: gas furnace for cold climates, heat pump for mild ones. But modern heat pumps have changed the game completely. Let's break down the real numbers so you can make the right choice for your home.
Cost Comparison: Purchase and Installation
| System | Equipment Cost | Installation | Total Installed |
|---|---|---|---|
| Heat Pump (air-source) | $2,500-$5,500 | $1,500-$2,500 | $4,000-$8,000 |
| Gas Furnace (high-eff.) | $1,500-$3,500 | $1,000-$2,500 | $2,500-$6,000 |
| Dual Fuel System | $4,000-$7,000 | $2,000-$3,500 | $6,000-$10,500 |
Yes, heat pumps cost more upfront. But here's the thing — the higher purchase price is often offset by lower operating costs over the life of the system. The federal tax credit that used to close part of that gap has expired (more on that below), so the comparison now rests on running costs and whatever your state or utility offers.
Efficiency Ratings Explained
This is where things get a little technical, but stick with me — it matters for your wallet.
- Heat pumps use HSPF2 (Heating Seasonal Performance Factor) for heating and SEER2 for cooling. A good heat pump hits HSPF2 of 10+ and SEER2 of 18+. Heat pumps are technically 200-300% efficient because they move heat rather than create it.
- Gas furnaces use AFUE (Annual Fuel Utilization Efficiency). A standard furnace is 80% AFUE. A high-efficiency model hits 95-98% AFUE. That means 95-98 cents of every dollar of gas actually becomes heat.
The key difference: even a 98% efficient furnace can only convert fuel to heat. A heat pump delivers 2-3x more heating energy than the electricity it consumes. That's a fundamental efficiency advantage.
Operating Cost by Climate Zone
| Climate | Heat Pump Annual Cost | Gas Furnace Annual Cost | Winner |
|---|---|---|---|
| Southern (FL, TX, AZ) | $800-$1,200 | $900-$1,400 | Heat Pump |
| Mid-Atlantic (VA, NC, TN) | $1,000-$1,500 | $1,100-$1,600 | Heat Pump |
| Midwest (OH, IL, IN) | $1,200-$1,800 | $1,000-$1,500 | Depends on gas price |
| Northern (MN, WI, ME) | $1,400-$2,200 | $1,100-$1,700 | Gas Furnace (unless dual fuel) |
Modern Heat Pumps in Cold Climates
Here's what a lot of people don't realize: modern cold-climate heat pumps work efficiently down to -15°F. Brands like Mitsubishi Hyper-Heat, Bosch, and Daikin have engineered units that maintain 80-100% heating capacity at temperatures that would've shut down older models. If you live in Minnesota or Maine, a cold-climate heat pump is genuinely viable now.
That said, at extreme temperatures (below -15°F), efficiency drops significantly. That's where a dual fuel system comes in — it uses the heat pump as the primary system and switches to a gas furnace backup only during the coldest days. You get the best of both worlds.
The $2,000 Heat Pump Credit Ended After 2025
For years the deciding argument for a heat pump was the $2,000 federal tax credit under §25C — a straight credit, not a deduction, that came right off what you owed the IRS. That argument is gone. Public Law 119-21, enacted July 4, 2025, terminated §25C for property placed in service after December 31, 2025, so a heat pump installed now earns no federal credit. See the IRS Home Energy Tax Credits page.
What that changes: the installed-price gap between a heat pump and a furnace that the credit used to close is now yours to cover. State and utility rebates still exist and can be worth $1,000-$3,000 in some areas, so check both before you decide — but run the comparison on gross prices and operating costs, not on an incentive that has expired.
Gas furnaces never had a federal credit of that size, and they don't have one now either. You might find some state-level efficiency rebates, but they're typically $200-$500 at most.
When a Gas Furnace Still Wins
Let's be fair — there are situations where a gas furnace makes more sense:
- Very cheap natural gas: If your gas rates are well below the national average, the operating cost advantage of a heat pump shrinks or disappears
- Extreme cold with no desire for dual fuel: If you live where it regularly hits -20°F and don't want to deal with a dual system, a high-efficiency furnace is simpler
- Tight budget: If upfront cost is the deciding factor, a furnace is $1,500-$2,000 cheaper — and with the federal credit gone, that gap is no longer offset at tax time
- Existing gas infrastructure: If you already have gas lines and a furnace, a straight replacement is the cheapest route
Environmental Impact
If reducing your carbon footprint matters to you, heat pumps win decisively — especially if your electricity comes from renewable sources. A gas furnace burns fossil fuel directly, producing roughly 6,400 pounds of CO2 per year for an average home. A heat pump powered by a typical US electricity mix produces about 40% less CO2, and that gap widens every year as the grid gets cleaner.
Ready to explore more energy upgrades? Check out our guide on EV charger installation costs or browse our HVAC installation cost breakdown for detailed pricing in your area.