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Compare annual heating costs

Heat Pump Running Cost Calculator

Estimate heat-pump electricity use and compare running cost with gas, oil or another fuel.

Method

How this tool works

Electricity = useful heat demand ÷ SCOP. Alternative fuel input = useful heat ÷ system efficiency.

Worked example

A home needing 12,000 kWh of heat with SCOP 3 uses about 4,000 kWh of electricity.

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Assumptions & limitations

SCOP is a seasonal estimate; actual performance depends on climate, flow temperature, controls and installation quality. Not a quotation.

Last reviewed: 20 July 2026
Calculation and copy checked for this release.

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