Heat Pump Calculator
Energy Requirements
Average UK 3-bed home consumes 12,000 - 16,000 kWh
Average UK 3-bed home consumes 2,500 - 4,000 kWh
Heat Pump Parameters
Assume a Time-of-Use tariff is being used and the average rate is £0.20/kWh. Ofgem price cap is £0.27/kWh
Typical UK home should achieve at least 4; well-insulated homes can exceed 5.
Typical HP cylinder should achieve 3.5 SCOP
Our typical install cost after the grant has been paid is between £5,500 and £6,000
Gas Boiler Parameters
Ofgem price cap rate as of 1st April, 2025
Ofgem price cap rate as of 1st April, 2025
Typical new condensing boiler is 90%
National average for a new boiler installation is between £2,500 - £3,000
Heat Pump Results
Gas Boiler Results
Projection Parameters
Note: We've estimated a 5% year-on-year increase in energy costs.
15-Year Cost Comparison
| Year | Heat Pump Annual (£) | Gas Boiler Annual (£) | Heat Pump Total (£) | Gas Boiler Total (£) | Cumulative Savings (£) |
|---|---|---|---|---|---|
| Initial | 5500.00 | 3000.00 | -2500.00 |
Calculator designed to help you compare heat pump and gas boiler costs over time.
All calculations are estimates and actual costs may vary.