ENERGY STAR data · updated November 7, 2026

What will your heat pump really cost to run?

Running costs for every U.S. state, real cold-weather output at 5°F, and which brands sell the same equipment. Built from official government data.

308models
31brands
51states priced
176with known twins
1
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Size ranges are a starting point only. A contractor's Manual J calculation decides the right size.

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Cheapest heat pumps to run for your home

Sorted by estimated yearly running cost in your state.

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Cost in your state

Every model page estimates heating and cooling cost in all 51 states using the latest EIA electricity prices. Edit the numbers to match your bill.

Real cold-weather output

See certified heat output at 47°F, 17°F and 5°F — the numbers that decide whether you'll need backup heat in January.

Same unit, different badge

We match identical equipment across brands, so you can tell when two quotes are really for the same heat pump.

Frequently asked questions

Where does Heat Pump Atlas get its data?

Equipment performance comes from the U.S. EPA's ENERGY STAR certified heat pump dataset, and electricity prices come from the U.S. Energy Information Administration. We aggregate them into model-level pages and show our formulas on the methodology page.

How accurate are the running-cost estimates?

They are planning estimates for a correctly sized system using state-average prices and climate hours. Your actual cost depends on your home, installation and thermostat habits; you can enter your own rate and hours in every calculator.

What does 'heat kept at 5°F' mean?

It is the unit's certified heating output at 5°F divided by its output at 47°F. It shows how well a heat pump holds up in deep cold — the higher, the less you'll rely on expensive backup heat.

Why are some brands listed as the same equipment?

Manufacturers often sell identical outdoor units under several brand names. We flag listings with the same certifying manufacturer and identical certified performance, so you can compare quotes on installation and warranty rather than badge.