Heat pump vs gas running cost

Compares a modern condensing gas boiler with an air source heat pump, using the maximum a supplier may lawfully charge per unit under Ofgem's domestic price cap. It is not a price, a bill, or an estimate of what you will actually pay — what you pay depends on your own tariff, supplier, and how efficiently your system actually runs.

Covers Great Britain (England, Scotland and Wales) only — it does not cover Northern Ireland, which has separate arrangements.

Your detailsRegionHow you payAnnual gas consumption (kWh) — optionalFound on a recent bill or meter reading, added up over a year. If you leave this blank, we use a typical figure — not your usage.

Don't know your gas use?

Answer these instead and we'll use a typical figure for similar homes. Leave them as they are if you entered your gas use above.

Type of homeWhen was it built?Roughly is fine.Floor areaRoughly is fine.PostcodeUsed on your device to find your region for the typical figure. It isn't sent to us for this.