How Much Electricity Does a Heat Pump Use?
How much electricity does a heat pump use? 750 to 4,000 watts cooling, up to 6,700 heating. Enter yours below for the exact cost.
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Heat pump electricity cost calculator
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How the math works: 2,250 W × 8 hours ÷ 1,000 = 18 kWh a day. × 30 days = 540 kWh a month. × $0.165 per kWh (the 2024 U.S. average) = about $89.10 a month.
A central heat pump typically draws 750 to 4,000 watts in cooling mode and up to about 6,700 watts in heating mode, depending on system size (1 to 5 tons). Because it's sized to condition an entire house, it's usually one of the largest single contributors to an electric bill.
| Mode | Typical watts |
|---|---|
| Cooling | 750-4,000 W |
| Heating | up to about 6,700 W |
This page covers a central, ducted heat pump. If you have a single-room or zone ductless system instead, see our mini split guide: a mini split is technically a type of heat pump, just sized and installed differently.
What affects how much electricity a central heat pump uses
- System size: measured in tons. Larger homes need bigger, higher-wattage systems.
- Outdoor temperature: a heat pump works harder, and draws more, pulling heat from cold winter air or rejecting heat into hot summer air.
- Efficiency ratings: SEER (cooling) and HSPF (heating) affect how much electricity it needs to deliver the same heating or cooling.
How to reduce your heat pump's electricity use
- Keep filters clean, since restricted airflow makes the system work harder for the same result
- Set a consistent thermostat schedule rather than large temperature swings, since a heat pump recovers from a big swing less efficiently than a furnace or standard AC does
- Have the system serviced annually so refrigerant charge and airflow stay within spec
- Improve home insulation and seal air leaks, since a heat pump has to run longer to compensate for lost conditioned air
If your winter bill looks too high for a heat pump, check how backup heat inflates a winter bill.
Typical wattage figure: roughly 750-4,000 W in cooling mode and up to about 6,700 W in heating mode, depending on system size (1-5 tons). Source: EnergySage: How Much Energy Does a Heat Pump Use?. This is a commonly cited industry estimate, not a government-published figure. Actual draw depends on outdoor temperature, since a heat pump works harder to pull heat from colder outside air. We review this figure periodically and update it if the source changes; last checked September 2026. Cedrick Reese built this heat pump cost calculator and rechecks the wattage figure against the source above.
Frequently asked questions
How many watts does a heat pump use?
A central heat pump typically draws 750 to 4,000 watts in cooling mode, scaling with system size from 1 to 5 tons, and up to roughly 6,700 watts in heating mode, based on a commonly cited industry estimate. This is not a government-published figure; your system's exact draw depends on its size and efficiency rating.
How much does it cost to run a heat pump?
A 3-ton system drawing roughly 2,250 watts and running 8 hours a day at the U.S. average rate of about 16.5 cents/kWh costs roughly $2.97 a day, or about $89 a month during peak heating or cooling season. Use the calculator above with your own system's specs and rate for a tailored estimate.
Why does my heat pump use more electricity in winter than summer?
A heat pump has to work harder to pull heat out of cold outside air than to move heat out of a house in cooling mode, so its wattage draw and runtime both tend to climb as outdoor temperature drops, especially below freezing.
How can I reduce how much electricity my heat pump uses?
Keep filters clean so airflow isn't restricted, set a steady thermostat schedule rather than large swings, and have the system serviced annually to keep refrigerant charge and airflow within spec, since a poorly maintained system can use noticeably more electricity for the same comfort.
This page provides estimates based on a commonly cited industry estimate, not a government-published figure, and the numbers you enter. Actual electricity cost depends heavily on your specific system size, efficiency rating, and outdoor temperature.