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What electric heaters cost to run

Every electric heater that makes heat from a wire or a bar turns each kWh it uses into a kWh of heat. They differ in how fast they give it out and where it goes, not in how much a kWh of heat costs. The table sets them side by side at your electricity price.

Side by side

Heating: typical power and running cost
ApplianceTypical powerAn hourA year, typical use
Space heater2,500 W65.8p£548.96
Oil-filled radiator2,000 W52.6p£548.96
Heated towel rail450 W11.8p£129.69
Electric blanket100 W2.63p£20.59

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Electricity

Default Ofgem, 1 Oct – 31 Dec 2026.

Default Ofgem, 1 Oct – 31 Dec 2026.

Gas

Default Ofgem, 1 Oct – 31 Dec 2026.

Default Ofgem, 1 Oct – 31 Dec 2026.