Heat Pump Running Cost Calculator
Estimate annual heat pump running cost and compare it with a gas boiler delivering the same heat output.
Heat pump electricity = heat demand / COP. Boiler gas input = heat demand / boiler efficiency.
Use seasonal COP where possible
A seasonal performance figure is usually more useful than a best-case COP from a single mild day.
Running cost is not the full decision
Installation cost, grants, insulation, hot water setup, noise and maintenance should also be considered.
Heat pump FAQ
What is COP?
COP, or coefficient of performance, estimates how many units of heat a heat pump produces for each unit of electricity.
Why compare with boiler efficiency?
A boiler uses more fuel energy than useful heat delivered, so efficiency helps compare like-for-like heat output.