Heat Pump Electricity (kWh) Calculator
Estimate how many kilowatt-hours and dollars your heat pump uses for heating each year.
How to calculate heat pump electricity use
Annual heating electricity depends on how much heat your home needs and how efficient the unit is:
kWh = annual heat (BTU) ÷ (HSPF × 1,000)
For an average home that's roughly 4,000–10,000 kWh per heating season. Multiply by your electricity rate for the dollar cost. (Cooling adds more in summer, calculated from SEER.)
What drives your usage
- Climate — more heating degree-days = more kWh.
- Home size & insulation — bigger or leakier homes use more.
- HSPF — a higher-efficiency unit uses fewer kWh for the same heat.
- Thermostat habits — setbacks and a steady schedule help.
Lowering your running cost
- Air-seal and insulate — every BTU you don't lose is a kWh you don't buy.
- Choose a high-HSPF / cold-climate model.
- Use a time-of-use electricity plan and pre-heat off-peak.
- Keep filters clean and coils clear for peak efficiency.
Frequently asked questions
How many kWh does a heat pump use per month?
For heating, very roughly 500–1,500 kWh/month depending on climate, home size and efficiency. Enter your details above for an estimate.
How much does it cost to run a heat pump?
Often $50–$200/month for heating, scaling with your electricity rate and climate. Cooling adds summer usage.
Does a heat pump use a lot of electricity?
It uses more electricity than a gas furnace (which uses gas) but far less energy overall because it's 2.5–4× efficient. Versus electric resistance heat, it uses about 1/3 as much.
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⚠️ Rule-of-thumb estimate, not a substitute for a professional Manual J load calculation. Based on US DOE / ENERGY STAR guidance.