How Much Does a Heat Pump Cost in the UK? (2026)

Updated June 2026

The honest range: £8,000–£14,000 fully installed before grants, and roughly £500–£6,500 after the £7,500 Boiler Upgrade Scheme grant — putting many installs on a par with a new gas boiler.

What you actually pay

• Before grant: £8,000–£14,000 for a typical air source install.
• Boiler Upgrade Scheme grant: −£7,500 (England & Wales; claimed by your installer).
• Typical net cost: £500–£6,500.

Ground source costs more — often £18,000–£25,000 before the grant — because of the groundworks, but it delivers the highest efficiency. Providers like Octopus can land an air source install close to boiler-replacement money once the grant is applied.

What drives the price

• Heat pump size (kW): bigger homes need more output.
• Radiator & pipework changes: low-flow-temp designs may need a few larger radiators.
• Hot water cylinder: usually required if you don’t already have one.
• Brand & installer: premium brands and busy installers cost more.

Don’t forget running costs

Upfront price is only half the story. A heat pump uses far less energy than a gas boiler thanks to its efficiency (SCOP). At the 2026 price cap it’s roughly line-ball with gas, and clearly cheaper on a heat-pump tariff. Work out your numbers with the running cost calculator, then compare models on our air source heat pumps page.