Heat Pump vs Furnace: Which Is Cheaper Where You Live?

TL;DR: A modern heat pump costs less to run than a gas furnace in most of the country when electricity is under 15 cents/kWh, but in cold-winter states with cheap natural gas (under $1.20/therm), a furnace can still win on operating cost. Upfront, furnaces run $4,000-$7,000 installed versus $6,000-$14,000 for a heat pump, though federal tax credits of up to $2,000 narrow that gap.

_Last reviewed: July 2026 · 8 min read_

Your furnace is 16 years old and the contractor quoted you two very different numbers: one for a new gas furnace, one for a heat pump that "does it all." You don't want to overpay for a decade, so here's how the math actually breaks down by climate and rate.

Okoniq Property Hub logs your HVAC install date, filter changes, and utility bills in one place, so you can compare actual heating costs year over year instead of guessing.

Is a heat pump cheaper to run than a furnace?

It depends on your local electricity rate versus your gas rate, not on the technology itself. A heat pump moves heat instead of burning fuel, so it can produce 2.5 to 4 units of heat for every unit of electricity it uses (a "coefficient of performance" of 2.5-4.0). A gas furnace, even a high-efficiency 96% AFUE model, converts fuel to heat at roughly 1-to-1.

Run the numbers: at the US average of 16 cents/kWh for electricity and $1.35/therm for gas, a heat pump typically costs $0.05-$0.07 per unit of delivered heat, versus $0.06-$0.08 for a 96% furnace. That's a modest edge for heat pumps almost everywhere gas isn't unusually cheap. States like Texas, Louisiana, and parts of the Midwest with gas under $1/therm can flip that math back toward furnaces.

Which climate zones favor which system?

Heat pumps win in mild-to-moderate climates (zones 1-4: the South, Pacific Northwest, mid-Atlantic) where winter lows rarely drop below 20°F. Cold-climate heat pumps (a newer category, rated for efficient operation down to -13°F) have closed much of the older performance gap, but in zones 5-7 (New England, Upper Midwest, Rocky Mountain states) many owners still pair a heat pump with a furnace or electric resistance backup for the coldest weeks.

| | Heat Pump | Gas Furnace | |---|---|---| | Best climate | Mild to moderate winters | Cold, harsh winters | | Install cost | $6,000-$14,000 | $4,000-$7,000 | | Fuel cost sensitivity | Electricity rate | Natural gas rate | | Cooling included | Yes (also acts as AC) | No, needs separate AC | | Lifespan | 15 years | 15-20 years |

If your ductwork also needs work, that's a separate cost either way. Leaky or undersized ducts waste 20-30% of conditioned air regardless of which system pushes it through, so check signs your attic ventilation is failing your roof if you're already dealing with airflow issues in the attic space near your ducts.

What does each system cost upfront?

A new gas furnace typically installs for $4,000-$7,000 depending on size and efficiency tier, while a heat pump system (including the air handler) runs $6,000-$14,000. The gap has narrowed because the federal Inflation Reduction Act offers a 30% tax credit up to $2,000 for qualifying heat pumps installed through 2032, plus many states and utilities add rebates of $500-$3,000 on top.

Furnaces don't currently qualify for that same federal heat pump credit, though high-efficiency gas furnaces (95%+ AFUE) can qualify for a smaller $600 credit. If your electrical panel is older, budget extra: a heat pump draws more amperage than a furnace's blower motor, and if you're still running 100-amp service, you may need to look at 100 vs 200 amp service before the install crew shows up, since undersized panels are a common surprise mid-project.

How much will you spend on maintenance over 15 years?

Furnaces generally need less frequent professional service, roughly one annual tune-up at $100-$200, while heat pumps run 8-10 months a year (heating and cooling) and often benefit from twice-yearly checks at $150-$250 combined. Over a 15-year system life, that's a rough wash: $1,500-$3,000 for furnace-only service versus $2,250-$3,750 for a heat pump doing double duty as your AC too.

Filter changes matter more with heat pumps because the blower runs nearly year-round. If you're not sure which filter size fits your system or how often to swap it, 1-inch vs 4-inch furnace filters breaks down the maintenance interval difference, which applies to heat pump air handlers using the same filter slots.

One cost people forget: a heat pump replaces your AC too, so if your central air unit is also near the end of its life, you're really comparing "furnace + new AC in a few years" against "heat pump does both now." That single-system math often tips the scale toward heat pumps even in moderate-cold climates.

What's the real payback timeline?

Most owners recover the extra upfront heat pump cost in 4-9 years through lower combined heating-and-cooling bills, assuming average regional utility rates and a system that replaced an aging AC unit at the same time. If you're only replacing a furnace and keeping a newer, working AC separately, the payback stretches longer, sometimes past 12 years, because you're not offsetting a second replacement cost.

Run your own numbers before committing: pull your last 12 months of gas and electric bills, note your local kWh and therm rates, and ask your contractor for the specific COP rating of the heat pump model quoted, not just a marketing efficiency number.

FAQ

Do heat pumps work in cold climates like Minnesota or Maine?

Yes, cold-climate heat pumps rated for -13°F are available and common in New England retrofits, but many owners pair them with a gas or electric backup furnace for the coldest weeks, since efficiency drops as outdoor temperature falls.

Will a heat pump raise my electric bill a lot?

Expect your electric bill to rise by roughly $50-$150 per winter month if you're switching from gas heat, while your gas bill drops to near zero for heating; the net change depends on your specific rates but is usually a modest overall savings.

Can I keep my existing ductwork with a heat pump?

In most cases yes, if the ducts are properly sized and sealed; undersized or leaky ductwork reduces heat pump efficiency more noticeably than it does furnace efficiency, so a duct inspection before installation is worth the $150-$300 cost.

Is a heat pump worth it if I'm selling my home in 5 years?

It can add resale appeal in states pushing electrification incentives, and the 30% federal tax credit reduces your net cost regardless of how long you stay, but a furnace replacement is the cheaper short-term fix if you're not planning to recoup costs through bills.

How do I know which system size I need?

A licensed HVAC contractor should run a Manual J load calculation based on your home's square footage, insulation, and window count, not just replace your old unit with the same tonnage, since many existing systems were oversized to begin with.

This is educational information, not tax or financial advice. Consult a licensed HVAC contractor for a load calculation and a tax professional about credit and rebate eligibility in your state.