♨️ Heat Pump vs. Gas Furnace Cost Calculator

Compare what it costs to heat your home with a gas furnace versus a heat pump. The result depends mostly on the ratio between your electricity and gas prices and on how efficient the heat pump runs in your climate.

kWh
$
%
$/kWh

How this is calculated

Gas cost is heat demand ÷ furnace efficiency × gas price. Heat pump cost is heat demand ÷ seasonal efficiency × electricity price. The difference is your yearly saving (or extra cost).

Frequently asked questions

What seasonal efficiency should I use?

Modern cold-climate heat pumps reach 2.5–3.5 over a season. In mild climates, 3.5 or more is realistic.

When is gas still cheaper?

Roughly when electricity costs more than your heat pump’s efficiency times the gas price per kWh.

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