Heat pump vs gas furnace: which one actually costs less?

Is a heat pump cheaper than a gas furnace?

For most U.S. homes built after 1990 with average insulation, a heat pump is cheaper to run than a gas furnace once your electricity-to-gas price ratio is below about 3.5 to 1. The current national average ratio sits near 3.3 to 1, which is why the U.S. Department of Energy estimates heat pumps save the average homeowner $400 to $1,200 a year on heating bills compared with an 80% AFUE gas furnace.

The catch: heat pumps cost more to install. A 3-ton air-source heat pump runs $10,000 to $18,000 installed for a mid-tier brand like Goodman, Rheem, or Bosch, while a high-efficiency gas furnace runs $4,000 to $8,000. The calculator above figures out how many years of fuel savings it takes to pay back the upfront difference, and whether that ever happens for your specific home.

Heat pump installation cost vs gas furnace install

Here is what most U.S. homeowners are currently paying for a new system, including labor, permits, and a basic thermostat. Based on current installed-quote data.

• Standard air-source heat pump (14-16 SEER2): $10,000 to $14,000 installed
• Premium cold-climate heat pump (Mitsubishi, Daikin, 18-22 SEER2): $14,000 to $22,000
• Geothermal heat pump (ground-source): $20,000 to $45,000
• Standard 80% AFUE gas furnace: $3,800 to $6,500
• High-efficiency 96% AFUE gas furnace (Carrier, Trane, Lennox): $5,500 to $9,000
• Modulating 98% AFUE gas furnace: $7,000 to $11,000

Heat pump cost is the single biggest barrier for homeowners. The upfront price difference versus a like-for-like gas furnace replacement is usually $4,000 to $10,000. State and utility rebates close most of that gap in places like New York, Massachusetts, Maine, and California.

Heat pump rebates and tax credits: what is still available

The federal 25C tax credit that paid up to $2,000 toward heat pumps has expired and is no longer available for new installs. The good news is that state, utility, and HEAR (Home Electrification and Appliance Rebates) programs are still running and often stack into bigger savings than the old federal credit ever provided. A homeowner in Massachusetts or Maine can still walk away with $8,000 to $10,000 in stacked rebates on a full heat pump conversion.

• HEAR program (income-qualified): up to $8,000 toward heat pump install
• Mass Save (Massachusetts): up to $10,000 for whole-home heat pump
• NYSERDA (New York): $1,500 to $3,000 per ton, plus low-income adders
• TECH Clean California: up to $6,000 for heat pump conversion
• Efficiency Maine: up to $8,000 for whole-home electrification
• Most major utilities: $300 to $1,500 instant rebate on qualifying heat pumps

Use the "state rebate" field in the calculator above to model what your actual install would cost after local incentives. Check DSIRE (dsireusa.org) for current rebates in your zip code.

When a gas furnace still wins on cost

Heat pumps are not always the right answer. Three situations where a 96% AFUE gas furnace still beats a standard heat pump on total cost:

• Very cold climate zones (Z6 to Z7) with cheap natural gas: standard heat pumps lose COP below 17 degrees Fahrenheit, and resistance heat backup gets expensive fast.
• High electricity rates over $0.28 per kWh: in Hawaii, parts of California, or New York City, the math flips and gas can win even in mild climates.
• Homes that already have working gas service and a functional furnace under 12 years old: the install premium rarely pays back during the equipment lifetime.

For most other cases, especially homes in zones 3 through 5 with natural gas above $1.20 per therm and electricity under $0.20 per kWh, the heat pump is the cheaper long-run option even before rebates.

Heat pump vs gas furnace by climate zone

A 2,000 sq ft home in Atlanta and the same home in Minneapolis face very different math. Climate zone changes both the annual heating load and the heat pump efficiency. Here is the rough lifetime winner by zone for an average home with US-average utility rates:

• Zone 1 to 3 (FL, TX, CA, AZ): Heat pump wins by $4,000 to $9,000 over 15 years
• Zone 4 (mixed states): Heat pump wins by $2,000 to $5,000 over 15 years
• Zone 5 (Northeast, upper Midwest): About even, premium heat pump wins by $1,000 to $3,000
• Zone 6 to 7 (MN, ND, ME): Standard heat pump loses by $1,000 to $4,000, premium cold-climate heat pump wins by $500 to $2,500

Cold-climate heat pumps from Mitsubishi, Daikin, and Bosch hold their COP down to 5 degrees Fahrenheit. Standard units lose half their efficiency by 20 degrees. The tier you pick matters more than the brand in cold zones.

Dual fuel: when a hybrid heat pump and furnace makes sense

A dual fuel system runs the heat pump down to a setpoint (usually 30 to 35 degrees) and switches to the gas furnace below that. You get heat pump efficiency on mild days and gas economy on the coldest week of the year. Install cost runs $12,000 to $18,000 for the combined system, which is $2,000 to $5,000 more than either alone.

Dual fuel makes financial sense in zones 5 and 6 where electricity is over $0.16 per kWh and natural gas is under $1.30 per therm. In zones 3 and 4, a straight heat pump usually beats dual fuel on lifetime cost. In zones 7 and colder, dual fuel often beats both pure options.

How to get a real heat pump quote from an HVAC contractor

Take the numbers from this calculator into three different HVAC contractor quotes. Ask each one to provide a Manual J load calculation in writing, the model number of the heat pump they are proposing, the SEER2 and HSPF2 ratings, and a written estimate of annual operating cost at your local utility rates. Reject any quote that will not commit to those four things. The price difference between the lowest and highest bid on the same heat pump install is routinely $3,000 to $6,000, so getting multiple quotes is the single highest-ROI thing you can do.

Carrier, Trane, Mitsubishi, Daikin: which heat pump brand to buy

For standard heat pumps in mild climates, Goodman and Rheem give you the most cooling per dollar with a solid 10-year parts warranty. Carrier, Trane, and Lennox sit in the mid to upper tier with quieter compressors and better dealer networks. For cold-climate installs in zones 5 through 7, Mitsubishi Hyper-Heat and Daikin Aurora are the proven performers, both holding rated capacity down to 5 degrees Fahrenheit. Bosch IDS plays in the same lane at a slightly lower price. Whichever brand you pick, the lifetime cost difference comes from the SEER2 and HSPF2 ratings, not the badge on the box.