Free Tool

Heat Pump Running Cost Calculator

Find out what a heat pump would actually cost to run — and whether it saves money vs your current heating. Honest numbers, no spin.

Your current heating
What fuel do you currently use?
Annual heating bill: £1,200
£500 £4,000
Property size
Heat pump type
Running cost comparison
Your current annual cost
£1,200
boiler today
Heat pump annual cost
£1,140
estimated
BUS grant
£7,500
off install cost
Net install cost
£4,000
after grant
Annual cost comparison
Your boiler now
£1,200
Heat pump
£1,140

Not switching yet? You can still cut the bill on the boiler you already own. The first two steps in our energy efficiency bundle cost nothing — flow temperature and tariff — and they're usually worth more in year one than the running-cost gap between a heat pump and gas.

Get free heat pump quotes and claim your grant

Get matched with up to four MCS-certified local installers — the grant is applied directly to your invoice.

Running costs based on heat pump COP, electricity at 26.1p/kWh, gas 6p/kWh, oil 8p/kWh, LPG 12p/kWh. Install costs before grant: ASHP ~£11,500, GSHP ~£20,000 — net cost uses midpoint minus the applicable grant (£9,000 for oil/LPG homes, £7,500 otherwise). Solar saving assumes 4kWp south-facing system. Actual costs vary by property insulation, heat pump sizing, local installer and usage patterns. This tool provides estimates only and is not a quote.