Heat pumps usually cost less per year to operate than natural gas furnaces, but the difference depends on your local electricity and gas prices, how cold your winters are, and what you're replacing

A heat pump moves heat from outside air (or ground) into your home instead of burning fuel to create it. Because moving heat uses less energy than making it, heat pumps typically run cheaper than gas furnaces in the same climate. But "cheaper" is not automatic—it depends entirely on what you pay for electricity versus what you pay for gas in your area, and how efficiently your current system runs.

If you heat with natural gas today and are considering a heat pump, the real question is not whether heat pumps are cheaper in theory, but whether they are cheaper for you, in your location, with your winter temperatures and your utility rates. That calculation changes from one neighborhood to the next.

Key Takeaways

  • Heat pumps cost less to operate than gas furnaces in most U.S. climates because they move existing heat rather than creating it from fuel.
  • Your actual savings depend on your local electricity rate, your local gas rate, and how cold your winters get—not on national averages.
  • In very cold climates (below 0°F regularly), a heat pump's efficiency drops and it may need a backup heating source, which can reduce savings.
  • The upfront cost of a heat pump is typically higher than a gas furnace, so the payback period usually runs five to ten years depending on your climate and utility rates.
  • A hybrid system that runs both heat pump and gas furnace can lower costs in cold climates by using the heat pump when it is efficient and switching to gas when temperatures drop.

How operating costs compare in different climates

In mild to moderate climates—most of the South and Southwest, and coastal areas—heat pumps run significantly cheaper than gas furnaces. A heat pump in Atlanta or San Francisco will cost roughly 30 to 50 percent less per year to heat than a gas furnace in the same home. The reason is straightforward: the heat pump is moving outdoor heat indoors, and even cold air contains usable heat. A gas furnace has to burn fuel to create that heat from scratch.

In cold climates—the Midwest, Northeast, and mountain regions where winter temperatures regularly drop below 20°F—the advantage shrinks. Heat pumps still usually cost less to operate, but the gap narrows to 10 to 30 percent depending on how cold it gets and what you pay for each fuel. Below 0°F, many heat pumps lose efficiency and switch to electric resistance heating (essentially running like an electric space heater), which is expensive. Some cold-climate heat pumps are designed to stay efficient down to −13°F or lower, but they cost more upfront.

To know your actual savings, you need three numbers: your local electricity rate (per kilowatt-hour), your local gas rate (per therm or per cubic foot), and your winter design temperature (the coldest temperature your area typically reaches). Your utility company can give you the first two. Your HVAC contractor or local building department can tell you the third. Plug those into an online heat pump calculator, and you will see a real estimate for your location.

Upfront cost and payback period

A heat pump costs more to install than a gas furnace. A new gas furnace typically runs $3,000 to $6,000 installed. A heat pump for the same home usually costs $8,000 to $15,000 installed, depending on whether you need ductwork changes and what type of heat pump you choose (air-source heat pumps are cheaper than ground-source, which require digging).

That higher upfront cost means you do not break even when ready. In a mild climate with low electricity rates and high gas rates, you might recoup the extra cost in five to seven years. In a cold climate or where electricity is expensive, the payback period stretches to ten to fifteen years. Some homeowners never reach payback if they sell the house before the savings add up—though a heat pump does increase home value and appeals to buyers in many markets.

Federal tax credits and state rebates can shrink the upfront gap. The federal Inflation Reduction Act currently offers a tax credit of up to $2,000 for a heat pump installation (the amount varies by income and state). Many states and utilities offer additional rebates. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) for what is available in your area.

When a hybrid system makes sense

A hybrid heating system runs a heat pump for most of the year and automatically switches to a gas furnace when outdoor temperatures drop below a set point (usually around 35°F to 45°F). The heat pump handles the mild days when it is most efficient. The furnace kicks in during the coldest stretches when the heat pump would lose efficiency or need expensive electric backup heat.

Hybrid systems cost less to operate than a furnace alone and less upfront than a heat pump alone, making them popular in cold climates. The trade-off is that you keep a gas furnace in the system, so you do not eliminate your gas bill entirely. But you use far less gas than you would with a furnace-only setup. In the Northeast and Midwest, a hybrid system often delivers the best balance of cost and comfort.

Electricity rate matters as much as gas rate

A heat pump's operating cost is directly tied to your electricity rate. If your utility charges 12 cents per kilowatt-hour, a heat pump looks much better than if it charges 18 cents. Similarly, if natural gas is cheap in your area, the cost gap between heat pump and furnace narrows.

Some regions have time-of-use rates, where electricity costs more during peak hours (usually early morning and evening). If your heat pump runs during off-peak hours, your costs drop further. A few utilities offer special rates for heat pump customers. Ask your utility whether they have a heat pump rate or whether switching to time-of-use pricing would lower your bill.

What to do before deciding

Before committing to either system, have an HVAC contractor perform a heat loss calculation for your home. This shows how much heating capacity you actually need and helps the contractor size the system correctly. An oversized or undersized system will cost more to run and may not keep you comfortable.

Ask the contractor for an operating cost estimate based on your local utility rates and your home's heat loss. A reputable contractor can run this calculation and show you the annual cost difference between a heat pump and a gas furnace for your specific situation. Do not rely on national averages—your local numbers are what matter.

If you are replacing a furnace that is still working, calculate how many years you plan to stay in the home. If you are moving in five years, the higher upfront cost of a heat pump may not make financial sense, even if it would save money long-term. If you plan to stay ten years or longer, a heat pump is more likely to pay for itself.

Frequently Asked Questions

Will a heat pump work in my climate?

Heat pumps work in all U.S. climates, but they are most cost-effective in mild to moderate regions. In very cold climates, they still work but may need electric backup heat on the coldest days, which raises operating costs. A hybrid system is often the best choice for cold areas.

What if I do not have natural gas service?

If you heat with oil, propane, or electric resistance heating, a heat pump will almost certainly cost less to operate. Oil and propane are typically more expensive per unit of heat than electricity, and electric resistance heating is the most expensive option. A heat pump is a strong choice if you are switching away from any of these.

Can I install a heat pump myself?

No. Heat pumps require refrigerant handling, electrical work, and ductwork modifications that demand a licensed HVAC contractor. Improper installation will void the warranty and reduce efficiency. Always hire a licensed professional.

Do heat pumps need a backup heating system?

Most air-source heat pumps have electric resistance backup built in for very cold days. Ground-source heat pumps rarely need backup. If you live in a cold climate, ask whether the heat pump model you are considering can heat efficiently down to your area's design temperature, or whether a hybrid system would be better.

How long do heat pumps last?

A well-maintained heat pump typically lasts 15 to 20 years, similar to a gas furnace. Regular maintenance—cleaning filters, checking refrigerant levels, and having the system serviced annually—extends the life and keeps it running efficiently.