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AnswerHeat pump running cost for a 4-bedroom house
A 4-bedroom house costs roughly £980/year to heat with an air-source heat pump on a standard tariff (about £600 on a dedicated heat-pump tariff), versus around £867/year on gas.
On today's prices a heat pump can cost about the same as gas on a standard tariff — the real savings come from its efficiency plus a heat-pump electricity tariff with cheap off-peak rates.
| Heat pump (standard tariff) | ~£980/yr |
|---|---|
| Heat pump (heat-pump tariff) | ~£600/yr |
| Gas boiler | ~£867/yr |
Assumes ~12,000 kWh heat demand, COP 3.0, electricity 24.5p, gas 6.5p/kWh. Compare for your home →
2026 figures, based on Energy Saving Trust, Ofgem & gov.uk data · always confirm with a professional survey.