Heat pump running cost & savings calculator
Describe your UK home and see your running cost, your saving versus gas, oil or LPG, and payback after the £7,500 grant. Free, instant, no email, every number sourced.
A heat-pump tariff can be ~13-15p.
Efficiency. 3.5 is typical.
A heat pump would cut your heating bill by
£188/yr
17% cheaper to run · ~6kW system
- Now: mains gas heating
- £1,083/yr
- Heat pump running cost
- £895/yr
- Gas standing charge saved
- £106/yr
- Install after grant
- £3,750
- Payback time
- 19.9 years
- CO₂ saved
- 1,730 kg/yr
Estimate only. Real figures depend on your home, install and tariff. Prices: Ofgem cap, Jul-Sep 2026.
Outside the UK?The prices and grant here are UK-specific. Tell us where you are and we’ll add it next.
How the numbers work
Your heat demand
How much heat your home needs per year, from your home type or your actual gas kWh.
Current vs heat pump
Current cost = heat / boiler efficiency x fuel price. Heat pump = heat / SCOP x electricity price.
Saving and payback
The yearly difference, then the install cost after the £7,500 grant divided by that saving.
Running cost by home type
Typical heat pump running cost for a 3-bedroom home (national cap, SCOP 3.5). Open one for every size.
Cheapest regions to run a heat pump
Estimated yearly cost for a 3-bed semi, by region (Ofgem regional electricity prices), cheapest first.
- 1East Midlands£861/yr
- 2Northern (North East)£865/yr
- 3Yorkshire£868/yr
- 4West Midlands£869/yr
- 5Southern Scotland£886/yr
- 6North West£896/yr
- 7South Wales£903/yr
- 8London£904/yr
- 9Eastern£905/yr
- 10South West£905/yr
- 11Southern£906/yr
- 12Northern Scotland£906/yr
- 13South East£915/yr
- 14Merseyside, North Wales & Cheshire£948/yr
Compare with your current fuel
Guides
All guides ›Cheapest and most expensive UK regions to run a heat pump (2026)
Heat pump running costs ranked across all 14 UK price-cap regions, from the East Midlands (25.1p/kWh) to Merseyside & North Wales (27.7p/kWh).
Heat pump vs gas boiler: the real running-cost comparison (2026)
Using 2026 Ofgem cap prices, what a heat pump actually costs to run versus a gas boiler, with worked examples by home type and the SCOP break-even point.
How much does a heat pump cost to run in the UK? (2026)
Typical heat pump running costs by home type and bedrooms, what drives the bill, and how to cut it, based on 2026 Ofgem price-cap figures.
Frequently asked questions
Are heat pumps cheaper to run than a gas boiler?
It depends on the heat pump's efficiency (SCOP) and your prices. At the Ofgem cap (electricity 26.11p/kWh, gas 7.33p/kWh) a heat pump at SCOP 3.5 runs at a similar or slightly lower cost than a 90% gas boiler. A heat-pump electricity tariff or removing the gas standing charge makes it clearly cheaper.
How much is the heat pump grant in 2026?
The Boiler Upgrade Scheme gives £7,500 off an air source heat pump in England and Wales, rising to £9,000 for homes replacing oil or LPG from 21 July 2026. Your installer must be MCS certified and applies for the grant for you.
What is SCOP and why does it matter?
SCOP is how many units of heat a heat pump makes per unit of electricity over a year. A SCOP of 3.5 means 3.5 kWh of heat per 1 kWh of electricity. The higher the SCOP, the lower the running cost, so it is the single biggest factor in your bill.