Heating comparison calculator
Compare heat pump and gas boiler running costs using editable assumptions.
Calculator
Heat pump vs gas boiler running costs
Default 12,000 kWh is an illustration; use your heat-loss survey if you have one.
3.1 is an editable illustration, not a promise. Must be above 0.
85% is an editable illustration. Cannot exceed 100%.
- Heat pump electricity use
- 3,871 kWh
- Heat pump running cost
- £968 / yr
- Boiler gas use
- 14,118 kWh
- Boiler running cost
- £847 / yr
- Gas standing charge saved
- £0 (gas kept)
- Break-even SPF
- 3.54
Your entered SPF is below the break-even point, so the boiler has the lower modelled cost per unit of useful heat. Standing charges, maintenance and tariff timing should be considered separately.
This is an estimate, not a quotation. Your building heat loss, emitter sizes, controls, hot-water use, tariff and weather will affect the result.
Current price cap rates are loading or unavailable; enter your own rates.