How much does an air source heat pump cost in the UK?
A air source heat pump costs £7,000 to £18,000 in the UK, typically around £11,000 before grant. Prices reviewed June 2026.
An air source heat pump is priced by the size of unit your home needs and by any changes to radiators or the hot water cylinder. The government grant takes a large chunk off the price for most homes.
Price your air source heat pump
Adjust for your job and area to get a range. Nothing is sent anywhere.
Air source heat pump cost breakdown
What a air source heat pump typically costs, by option:
| Home size | Typical UK cost |
|---|---|
| Small home / flat (5-8 kW) | £7,000 to £10,000 |
| Typical 3 bed (8-12 kW) | £9,000 to £13,000 |
| Large home (12 kW+) | £12,000 to £18,000 |
| + Radiator upgrades / new cylinder | add £1,500 to £4,000 |
What's included in the price?
A typical air source heat pump price includes:
- The heat pump unit and hot water cylinder
- Installation, pipework and controls
- Commissioning and certification
- System design and heat loss survey
What changes the price?
The things that move a air source heat pump price most:
The size of unit, set by your home's heat loss
Whether radiators need upsizing for the lower flow temperature
A new hot water cylinder if you do not have one
How easy the outdoor unit and pipe runs are to fit
Does where you live change the cost?
Fairly consistent nationally. Labour is higher in London and the South East.
Common questions
The Boiler Upgrade Scheme grant of £7,500 in England and Wales comes off the price, so a typical install of £9,000 to £13,000 before the grant works out around £2,500 to £6,000 after it.
Sometimes. Heat pumps run at a lower flow temperature, so some radiators may need to be larger. A good installer checks this in the heat loss survey and includes any changes in the quote.
It can be, because a heat pump delivers around three units of heat per unit of electricity, but running cost depends on your tariff, insulation and how the system is set up. Model it for your home before switching.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.