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
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
Running costs based on heat pump COP, electricity at 27p/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 £7,500 BUS grant. 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.