The EPC register calls this an air or ground source heat pump. Priced from the recommendations on 8,814 current certificates in England & Wales — not installer marketing.
The register’s indicative installed cost, and the payback at this measure’s typical saving.
| Property | Homes | Installed cost | Saving / yr | Payback |
|---|---|---|---|---|
| Detached bungalow | 1,072 | £10,000 | £423 | 23.6 yrs |
| Semi-Detached bungalow | 889 | £10,000 | £423 | 23.6 yrs |
| Detached house | 902 | £10,000 | £423 | 23.6 yrs |
| End-Terrace house | 1,069 | £10,000 | £423 | 23.6 yrs |
| Mid-Terrace house | 1,909 | £10,000 | £423 | 23.6 yrs |
| Semi-Detached house | 1,748 | £10,000 | £423 | 23.6 yrs |
Savings are the measure’s share of the home’s own certificate saving, estimated the same way the Upgrade Plan estimates it, then taken across every home recommended this measure.
Air or ground source heat pump typically adds 14.6 EPC points, at about £686 a point. A grade band is 11–14 points wide, so this alone can move a whole grade.
From the grants registry, verified 20 August 2026 · all grants
Exact cost, saving and grades gained — from your home’s own certificate.