Heat Pump Savings Calculator
Estimate your savings from switching to a heat pump based on your current heating system, home size, and insulation level.
Enter your current heating costs and home details to see how much you could save by switching to an air source heat pump. Figures are based on Ofgem price cap rates and a seasonal COP of 3.0.
Available in England & Wales if replacing a fossil fuel boiler
Heat pump cost
£10,500
After BUS grant
£3,000
Annual running cost
£1,871
Annual saving
£-471
| Detail | Current system | Heat pump |
|---|---|---|
| Annual running cost | £1,400 | £1,871 |
| Install / replacement cost | £2,500 – £3,500 | £3,000(after £7,500 grant) |
| Annual maintenance | ~£100 | ~£150 |
| Payback period | — | N/A |
* Estimates use Ofgem price cap rates: gas 5.5p/kWh, electricity 24.5p/kWh. Heat pump assumes seasonal COP of 3.0. Actual savings will vary.