The question you want answered is simple: is a heat pump worth it for my home? Will it save money, keep you warm when it's cold out, and does the up-front cost make sense? This guide answers those questions without the hype from either side.
It covers how heat pumps work, the types and what they cost, the efficiency ratings that matter, the operating-cost comparison against gas and other systems, cold-climate performance, and the 2026 tax credits and rebates. The most useful thing to know up front: whether a heat pump saves you money depends heavily on your local electricity-to-gas price ratio, and we show you how to check it. Figures come from the DOE, ENERGY STAR, the IRS and AHRI.
A heat pump moves heat rather than generating it, which makes it far more efficient than combustion or electric-resistance heating, and a single unit both heats and cools. In heating mode it can deliver several units of heat per unit of electricity (a high heating COP). Whether that efficiency translates into lower bills than your current system depends on your local energy prices, and modern cold-climate models work well below freezing.
How a heat pump works
A heat pump doesn't create heat, it moves it, like a refrigerator running in reverse. In winter it extracts heat from the outdoor air (even cold air contains usable heat energy) and pumps it inside; in summer it reverses and pulls heat out of your home, working just like an air conditioner. That's why it's efficient: a gas furnace can turn almost all of its fuel into heat but never more than it burns, while a heat pump can deliver several units of heat per unit of electricity.
The core parts are a compressor, two heat exchangers (indoor and outdoor), an expansion valve, and refrigerant, and modern variable-speed (inverter) compressors modulate their output to match your home's needs instead of cycling fully on and off. For the full step-by-step refrigeration cycle, see our how a mini split works guide (the cycle is the same for all heat pumps) and our COP explained guide for the efficiency math.
The three types of heat pump
| Air-Source (Ducted) | Mini Split (Ductless) | Ground-Source (Geothermal) | |
|---|---|---|---|
| Typical installed cost | Moderate | Moderate | Much higher (large upfront) |
| Heating COP (mild) | high | higher | higher |
| Heating COP (very cold) | lower | lower | stays high (ground is stable) |
| Best for | Homes with existing ductwork | No ducts, room-by-room zoning | Maximum efficiency, new builds |
- Air-source (ducted) is the most common type in North America, replacing or supplementing a furnace and using your existing ductwork. Best for homes with ducts that want one whole-house system.
- Mini split (ductless) connects an outdoor unit to one or more wall heads with independent zone control. Best for homes without ducts, additions, or garages. See our mini split guide for the full breakdown.
- Ground-source (geothermal) exchanges heat with the stable temperature underground, giving the highest efficiency and longest lifespan, but at a much higher upfront cost. It suits cases where long-term efficiency justifies the investment, especially new construction. See air-source vs. ground-source for the comparison.
Efficiency ratings, and the number that decides your bill
Heat pump efficiency uses SEER2 (seasonal cooling), HSPF2 (seasonal heating), EER2 (peak cooling), and COP (the instantaneous heat-out-per-energy-in ratio). Modern units span a wide efficiency range, with better models rating well above the federal minimums.
But the part most guides skip is the key to whether a heat pump actually saves you money:
Multiply the COP by comparing your electricity rate against your gas rate. If electricity is about $0.18/kWh and the heat pump's COP is 3.0, your effective heating cost is roughly 6 cents per kWh of delivered heat (18 cents per kWh ÷ a COP of 3), about on par with natural gas at an assumed $1.35/therm.
The important consequence: a heat pump only undercuts natural gas once its COP clears roughly 3.8 at these rates. So on cheap gas, a high-efficiency furnace is often competitive; a heat pump wins most clearly where electricity is cheap, gas is expensive (or you're replacing propane, oil, or electric resistance), or the climate is mild enough to hold a high seasonal COP. Run your own numbers with the heat pump running cost calculator.
What heat pumps cost
Installed cost depends on the type, capacity, and your home's specifics (ductwork condition, electrical capacity, install complexity). Ducted air-source and ductless mini split systems occupy a similar mid-range; ground-source is substantially higher upfront but has a longer lifespan. Our heat pump cost-to-install guide breaks down the pricing in detail.
A few things that push a quote above the base price:
- An electrical panel upgrade (often needed to add a heat pump's circuit)
- New or modified ductwork
- Long refrigerant line runs through finished walls
- Permit fees
These are real and worth asking your installer about up front so the quote reflects your actual situation.
The operating-cost comparison
This is where a heat pump's value is decided. Here's an illustrative annual heating-plus-cooling comparison at assumed rates (about $0.18/kWh electricity and $1.35/therm gas), for a typical home:
| System | Approx. annual heating + cooling |
|---|---|
| Heat pump (HSPF2 10) | competitive with high-efficiency gas |
| Gas furnace (96%) + AC | competitive on cheap gas |
| Gas furnace (80%) + AC | higher (older, less efficient) |
| Electric resistance + AC | much higher (most expensive to heat) |
| Oil furnace + AC | high |
| Propane furnace + AC | high |
The pattern that matters: a heat pump reliably beats electric resistance, oil and propane heating, and is competitive with or better than gas depending on your local price ratio. Against cheap natural gas it can be a close call. That's why "will a heat pump save me money" has no universal answer; it depends on what you're replacing and your local rates.
Use the running cost calculator with your own numbers rather than trusting a blanket claim; the table figures are illustrative at fixed assumptions.
Cold climates: do heat pumps actually work?
Yes, and this is where the technology has changed most. Modern cold-climate heat pumps are specifically designed to maintain strong heating capacity in freezing temperatures, many hold full rated capacity down to around 5°F and keep operating (at reduced capacity) well below zero.
Even at very low temperatures, a heat pump is still meaningfully more efficient than electric resistance heat. Heat pumps are the primary heating source for millions of homes in Scandinavia, where deep cold is routine.
If you're in a cold climate, look for a model specifically rated for cold-climate performance and check its rated capacity and COP at your design temperature (not just at 47°F). For the full treatment, see our heat pumps in cold weather guide, and size the capacity against your design temperature with the heat pump size calculator.
For the coldest climates, you have three backup strategies:
- Dual-fuel (hybrid): the heat pump handles heating down to a balance point, then a gas or propane furnace takes over for the coldest hours. Captures heat pump efficiency for most of the season while minimizing expensive-hour electricity use.
- Electric resistance backup: strip heaters kick in when the heat pump can't keep up, simple and cheap to install but expensive to run, worth it only if the heat pump covers the large majority of heating hours.
- Cold-climate heat pump sized to the full load: the newest approach, sizing a cold-climate unit to meet 100% of the heating load even at design temperature, so no backup is needed. It suits inverter-driven systems.
2026 tax credits and rebates
The rules changed recently, so the current, accurate picture is this:
The federal Section 25C tax credit expired for installs placed in service after December 31, 2025.
The 25C credit (which had covered 30% of project cost up to $2,000/year for qualifying high-efficiency heat pumps) was terminated under the OBBBA (PL 119-21, signed July 4, 2025). It does not apply to 2026 installs. Our heat pump tax credits 2026 guide covers the details.
What's still active in 2026:
- IRA HEAR rebates (formerly HEEHRA): income-qualified point-of-sale rebates up to $8,000 for heat pumps, income-tiered and state-administered.
- IRA HOMES rebates: open to all incomes, performance-based, tied to energy savings, state-administered.
- State and utility rebates: many states and utilities offer substantial additional incentives (some programs are quite generous). Check the DSIRE database (dsireusa.org) or your state energy office for what's currently funded in your area.
Because the state programs roll out on their own timelines and funding levels, confirm what your state currently offers, and which equipment qualifies, with your installer before signing.
Maintenance
Heat pumps need modest but real maintenance:
- Check and replace air filters every 1 to 3 months. A clogged filter restricts airflow and cuts efficiency (the DOE says clean filters can lower an air conditioner's energy use by 5 to 15%).
- Keep the outdoor unit clear of leaves, snow, and debris, with a couple of feet of clearance on all sides.
- Check the condensate drain periodically to avoid clogs and water damage.
- Get an annual professional tune-up (checking refrigerant charge, cleaning coils, testing the defrost cycle, tightening electrical connections). See our maintenance checklist for the full routine.
Common myths about heat pumps
"Heat pumps don't work below freezing." Outdated. Modern cold-climate units maintain strong capacity around 5°F and operate well below zero, and they're the primary heat source across Scandinavia.
"Heat pumps always save money." Not always, and we won't pretend otherwise. Against cheap natural gas, a high-efficiency furnace can be competitive or cheaper to run.
The savings are largest when replacing electric resistance, oil, or propane, or where electricity is cheap relative to gas. Check your local rates.
"A heat pump can't heat and cool the same house." It does both, that's the point. One system replaces both your furnace and your AC.
Downsides of heat pumps
Heat pumps aren't the right answer for every house. The main trade-offs:
- Higher upfront cost than a furnace or central AC alone; see heat pump installation cost.
- Less heat when it's coldest. Output falls as the outdoor temperature drops. ENERGY STAR's cold-climate models must still deliver at least 70% of their rated capacity at 5°F, but standard models drop further, so cold climates need a cold-climate model, backup heat, or both. Our heat pump size calculator estimates the backup you'd need.
- Running cost depends on local prices. At the U.S. average of 18.19 cents per kWh (EIA, January to July 2026) and an assumed $1.35 per therm of gas, a heat pump averaging a COP of 3 costs about $17.77 per million BTU of heat, against $14.21 for a 95% gas furnace. Where electricity is cheap or gas is expensive, the heat pump comes out ahead; check your state's rate in the kWh cost calculator.
- Defrost cycles. In cold, damp weather, frost builds on the outdoor coil, and the unit reverses for a few minutes at a time to melt it, briefly pausing heat.
- Electrical capacity. A heat pump with electric backup strips can need a bigger circuit or a panel upgrade.
Frequently asked questions
Is a heat pump worth it? It depends on what you're replacing and your local energy prices. A heat pump reliably beats electric resistance, oil, and propane heating, and it replaces both your heating and cooling with one efficient system.
Against cheap natural gas it's a closer call. The efficiency and the tax rebates make it attractive for many homes, but check your local electricity-to-gas price ratio with our running cost calculator before deciding.
Do heat pumps work in cold weather? Yes. Modern cold-climate heat pumps maintain strong heating capacity in freezing temperatures and keep operating well below zero.
Look for a model rated for cold-climate performance and check its capacity at your design temperature. For the coldest areas, a dual-fuel setup or a properly sized cold-climate unit handles it.
How much does a heat pump cost to run? It depends on your system's efficiency, your climate, and your electricity rate. Because a heat pump delivers several units of heat per unit of electricity, it's typically much cheaper to run than electric resistance and often competitive with or better than gas, use our running cost calculator with your actual rate for a real estimate.
How long do heat pumps last? Air-source and ductless heat pumps have a long service life with proper care; ground-source systems last even longer, and the underground loop in particular is very durable. Regular filter changes and annual maintenance are the keys to reaching the full lifespan.
What size heat pump do I need? Sizing depends on your home's heat loss, which varies with square footage, insulation, climate, and design temperature, not a single rule of thumb. Use our heat pump size calculator, and for any install insist on a proper Manual J load calculation rather than a rough estimate.
About these figures
The efficiency principles (heat pumps moving rather than generating heat, delivering multiple units of heat per unit of electricity) and the filter/maintenance efficiency figures reflect DOE and ENERGY STAR guidance. The COP-to-cost crossover analysis uses standard energy-cost math at the stated (illustrative) electricity and gas rates. Equipment performance references the AHRI Directory of Certified Product Performance.
The tax-credit and rebate information reflects current federal rules: the IRS Section 25C credit ended for systems placed in service after December 31, 2025 under the OBBBA, while the IRA HEAR and HOMES rebate programs remain, with state and utility incentives tracked in the DSIRE database. The right choice depends on your climate, what you're replacing, your local energy prices and proper sizing, which the guidance and calculators above help you determine.
Sources & References
- DOE: Heat Pump Systems (types, efficiency, sizing)
- U.S. DOE: Energy Saver 101, Home Cooling (PDF) (clean filters lower AC energy 5-15%)
- ENERGY STAR: Heat & Cool Efficiently (efficiency + maintenance guidance)
- AHRI: Directory of Certified Product Performance
- IRS: Energy Efficient Home Improvement Credit (25C)
- DSIRE: Database of State Incentives for Renewables & Efficiency
- ENERGY STAR: Heat Pump Key Product Criteria
- U.S. EIA: Electric Power Monthly
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