How much grant can I get for a heat pump?

£7,500 through BUS in England and Wales, or £9,000 for an air-to-water or ground source heat pump replacing oil or LPG in a home without mains gas (21 July 2026 to 31 March 2027). In Scotland, Home Energy Scotland offers a grant of up to £7,500 (£9,000 rural/island) plus an optional interest-free loan of up to £7,500. ECO4 can cover the full cost for qualifying households.

How do I calculate my net cost after the grant?

Take the total installation quote and subtract the BUS grant: £7,500, or £9,000 for off-gas oil and LPG homes. For example, the DESNZ median air source cost of £12,908 minus £7,500 leaves about £5,400 to pay.

Heat Pump Grant Calculator: Estimate Your Subsidy

By Home Heat Pump Guide Published 18 March 2026

UK homeowner calculating heat pump grant subsidy and net installation costs — Your net cost depends on your installation size, location, and which grants you qualify for.

Want to know exactly what you would pay for a heat pump after grants? The answer depends on your location, property type, and circumstances. This guide provides worked examples for every scenario, or you can use our interactive calculator for a personalised estimate.

Get your personalised cost estimate in 2 minutes

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Shows costs after all available grants for your situation.

Worked Examples by Property Type

Installation	Install Cost	You Pay (£7,500 grant)	You Pay (off-gas oil/LPG, £9,000 grant)
Lower-cost install (lower quartile)	£11,128	£3,628	£2,128
Typical install (median)	£12,908	£5,408	£3,908
Higher-cost install (upper quartile)	£15,627	£8,127	£6,627

Installed air source heat pump costs in England and Wales from DESNZ Boiler Upgrade Scheme statistics (2026 Q2). Smaller homes often sit nearer the lower quartile and larger detached homes nearer the upper quartile. The £9,000 rate applies to homes without mains gas replacing oil or LPG until 31 March 2027. See the full cost guide for detailed breakdowns.

Costs by Nation

Calculating heat pump net costs after grants across different UK nations — Scottish homeowners can combine a HES grant with an optional interest-free loan. In England and Wales most pay roughly £3,600-£8,100 after the standard BUS grant.

Net Cost for a £12,000 Installation by Nation

England (BUS only)

£4,500

England (BUS + £2k top-up)

£2,500

England/Wales off-gas oil or LPG home (£9,000 grant)

£3,000

Scotland (HES grant + loan)

£0 upfront

Wales (if eligible for Nest; check with Nest)

£0

ECO4 eligible

£0

Maximising Your Grant

Check local authority top-ups to stack on the BUS grant
In Scotland, combine the HES grant (with the rural uplift if eligible) and the optional HES interest-free loan to reduce upfront cost
Off the gas grid with oil or LPG heating? Apply before 31 March 2027 for the £9,000 grant
If on benefits, check ECO4 or free schemes
Add solar panels with separate solar funding to cut running costs further

Homeowner completing grant calculation and preparing heat pump installation application — Stacking the BUS grant with a local top-up can cut your out-of-pocket cost substantially.

Get accurate quotes for your specific property

Request a heat pump quote

Real quotes show exactly what you pay after the grant.

Get your personalised estimate now

Use the Calculator

Takes 2 minutes. Shows your net cost after all available grants.

Frequently Asked Questions

How much grant can I get?

£7,500 (BUS), or £9,000 for off-gas oil and LPG homes until 31 March 2027; in Scotland a HES grant of up to £7,500 (£9,000 rural/island) plus an optional loan; or full cost (ECO4/Nest for eligible households).

How do I calculate my net cost?

Total installation quote minus the BUS grant. E.g., £12,000 - £7,500 = £4,500, or £12,000 - £9,000 = £3,000 for an off-gas oil or LPG home.

About Heat Pump Grant Calculations

Understanding your net cost after grants is essential for making an informed decision. The BUS grant provides £7,500 for most air source and ground source heat pumps, or £9,000 if your home is off the gas grid and currently heated by oil or LPG (until 31 March 2027), while Scottish funding combines a grant with an optional interest-free loan. Installation costs vary by property size, system type, and location. Our interactive calculator provides personalised estimates. Local authority top-ups can further reduce costs. Homeowners also adding solar panels should factor in combined grant stacking and ongoing energy savings.