How much do I pay after the BUS grant?

Often £0–£5,500 out of pocket after the £7,500 grant, depending on system upgrades.

Is a heat pump cheaper to run than gas?

Running costs vary; heat pumps are far more efficient, but electricity costs more than gas, so insulation and correct sizing matter.

Air Source Heat Pump Cost (UK)

Before you swap a gas boiler for a heat pump, know the real cost — including the grant and the bits lead-gen sites leave out. This guide gives typical UK 2026 figures so you can budget with confidence.

Last reviewed: August 2026Sources: Boiler Upgrade Scheme (GOV.UK) · Energy Saving Trust · MCS certification scheme

Typical supply + install cost

£7,000–£13,000 for a typical home, depending on size, existing heating and how much upgrading is needed. Larger or more complex homes cost more.

After the grant

The Boiler Upgrade Scheme gives £7,500 (up to £9,000 for oil/LPG homes) and is deducted from your quote by the MCS installer. Many households pay £0–£5,500 out of pocket.

What can add cost

Bigger radiators, new hot-water cylinder, pipework, and controls. A well-insulated home needs a smaller (cheaper) heat pump. Always get 2–3 MCS quotes.

FAQs

How much do I pay after the BUS grant?: Often £0–£5,500 out of pocket after the £7,500 grant, depending on system upgrades.
Is a heat pump cheaper to run than gas?: Running costs vary; heat pumps are far more efficient, but electricity costs more than gas, so insulation and correct sizing matter.