England & Wales · Heat pump calculator
Is a heat pump right for your home?
Tell us how the home is heated now and we'll show the £7,500 grant, how strong the heat-pump case is for that fuel, and what the evidence says about running costs and the EPC score.
Grant toward an air-source heat pump
£7,500
Boiler Upgrade Scheme (England & Wales), paid to your installer
Heated by heating oil and off the mains-gas grid — one of the strongest cases for a heat pump. There's no cheaper mains-gas option to switch to, and running costs typically fall against heating oil.
Observed EPC score improvement
+10
Typical annual saving on bills
£280/yr
A heat pump suits most homes but not all — it depends on insulation, radiator sizing and outdoor-unit space, and the grant has its own conditions. A signpost to weigh, not a recommendation for a specific home. The observed SAP figure is from only 59 register reassessments — a small sample; treat it as directional.
Based on 938,865 houses built 1930–1949 currently rated band D, from the full EPC register.
Want the number for your actual home?
These are cohort medians. Check your real EPC instead.
Enter your address and we start from the home's real certificate in the register — its own rating, the recommended improvements, and what it'd cost to make it warmer and cheaper to run — not a typical home like it.
More calculators
- EPC improvement simulatorWhat band a home like yours can reach, and what each measure does.
- Cost to reach band CThe median cost to get there, broken down by measure.
- Energy savings & paybackAnnual saving at today's prices, payback, and 10-year net.
- Retrofit grant checkerWhich grants you may qualify for, by tenure, band and income.
- MEES exemption checkerFor landlords: whether a below-C rental qualifies for an exemption, and how to register it.
Boiler Upgrade Scheme grant per gov.uk; the heat-pump case is a feasibility signpost from the home's fuel, not a suitability decision. Confirm with an installer or retrofit coordinator. Methodology.