Calculate heat pump cost & grant
Heat pump cost before and after grant
Eligible residential installation; does not provide domestic hot waterAbout £500
Gross About £3,000 · grant £2,500
Typical gross planning benchmark before property-specific upgradesAbout £7,500
Gross About £15,000 · grant £7,500
Enhanced grant applies only where current scheme conditions are metAbout £6,000
Gross About £15,000 · grant £9,000
Ground loop or borehole work drives a wide range£10,500–£42,500
Gross £18,000–£50,000 · grant £7,500
Enhanced grant available only for qualifying properties£9,000–£41,000
Gross £18,000–£50,000 · grant £9,000
Current Boiler Upgrade Scheme grant levels
Extras that can move the real project cost
- Upgrading around ten radiators: current planning benchmark £2,000–£5,000.
- Heating-system pipework changes where existing microbore or layout is unsuitable.
- Hot-water cylinder and controls for air-to-water systems.
- Loft, cavity-wall or floor insulation upgrades.
- Ground loops, trenching or vertical boreholes for ground-source systems.
- Electrical supply and consumer-unit work where required.
Why we show gross and net separately
A grant is not the same thing as a market price. Showing gross cost preserves a useful comparison between installers and technologies, while the separate grant line makes clear how much public support has been assumed. It also avoids understating the budget where a property later proves ineligible.
Sources
Boiler Upgrade Scheme — What you can get
Used for current grant values, including the temporary enhanced support for qualifying off-gas oil/LPG properties.
2026 heat-pump cost guides
Used for air-source and ground-source gross installation benchmarks and common upgrade allowances.
Frequently asked questions
How much is the heat pump grant in 2026?
For eligible properties in England and Wales, the Boiler Upgrade Scheme currently provides £7,500 for air-to-water and ground-source heat pumps and £2,500 for air-to-air systems. Some qualifying off-gas properties replacing oil or LPG can receive £9,000 until 31 March 2027.
How much does an air-to-water heat pump cost after the £7,500 grant?
Using a typical gross planning benchmark of about £15,000 gives an illustrative net cost around £7,500. Actual quotations can differ because radiators, pipework, cylinders, electrical work and insulation may need upgrading.
Who can get the £9,000 heat pump grant?
The enhanced £9,000 level applies to qualifying off-gas-grid properties in England and Wales replacing oil or LPG with an eligible air-to-water or ground-source heat pump. Eligibility should be confirmed through the official Boiler Upgrade Scheme process.
Does the grant cover radiator upgrades?
The voucher supports the eligible heat-pump installation as a project, but the homeowner still needs to compare the full installer scope. Larger radiators, pipework, insulation and other ancillary work can materially change the total project cost.