A typical domestic air source heat pump costs around £10,000–£15,000 before grants in 2026. Around £13,300 is a useful benchmark, but property specific surveys determine actual prices for each home.
Air source heat pump costs vary across UK homes because property size, heat demand and installation work differ. A smaller home can cost less than £10,000. Larger retrofits can exceed £15,000. Grants can reduce the upfront amount. An accurate quote still needs a survey covering heat loss, radiators, hot water, pipework and outdoor unit positioning before the system is priced.
Key Takeaways
- Air source heat pumps typically cost around £10,000–£15,000 before grants.
- Property size, heat demand and installation work can push costs higher.
- The Boiler Upgrade Scheme can reduce the upfront cost for eligible homes.
- A property survey is needed to confirm the actual installation price.
Typical UK Air Source Heat Pump Costs in 2026
There is no single price that applies to every home. Property size, system design and the amount of extra work can move the final figure considerably.
The table below gives indicative UK cost ranges for different installation scenarios, based on current research and MCS installation data:
| Installation Scenario | Indicative Cost Before Grant |
|---|---|
| Smaller or straightforward home | £9,000–£11,000 |
| Typical domestic air to water installation | £11,000–£14,000 |
| Larger or more complex home | £13,000–£15,000+ |
| Particularly complex retrofit | £15,000+ |
These ranges also broadly fit with wider installation cost data. Onward’s 2026 analysis of 2025 MCS dashboard data puts the average air source heat pump installation cost at around £13,300.
That figure helps put the ranges above into context. It refers to the full installed cost, rather than the price of the outdoor heat pump unit alone. It is also an average benchmark, so the actual cost for a particular property can be higher or lower depending on the installation.
What's Included in an Air Source Heat Pump Installation Cost?
The heat pump unit is only one part of the total installation cost. A typical quotation can also cover the equipment needed to connect the system, the labour to install and commission it, plus any work needed to remove existing heating equipment.
Looking at these costs separately makes it easier to understand why an air source heat pump installation can cost £10,000 or more.
Ancillary Equipment
A large part of the quotation can come from the equipment needed to make the system work correctly.
This can include:
- Hot water cylinder
- Pumps and valves
- Pipework and fittings
- System controls
- Mounting equipment
- Buffer or volumiser where required
A University of Strathclyde study estimated around £4,370 for ancillary equipment in its central cost model. This covered the supporting components needed alongside the heat pump, rather than the main heat pump unit itself.
These components are essential to connect the heat pump to the property’s heating and hot water system. The figure shows how quickly the total equipment cost can rise once cylinders, controls, pumps, valves and other fittings are added to the outdoor unit.
Installation Labour
Once the equipment has been supplied, it still needs to be installed, connected and tested.
Labour can cover:
- Fitting the indoor and outdoor equipment
- Installing pipework
- Making electrical connections
- Connecting controls
- Commissioning the system
- Testing the finished installation
The same Strathclyde model estimated installation labour at around £3,680.
Its central scenario put the combined cost of the main equipment, ancillary equipment and labour at £11,810.
Removal of Existing Heating Equipment
Your quotation may also include the removal of an existing boiler or heating system.
This can involve disconnecting the old equipment, taking it out, transporting it away and paying for disposal. Extra work may also be needed to modify pipework or prepare the area for the new system.
Always check the quotation for this line item.
A lower quote is not necessarily covering the same work if one installer includes removal and disposal while another charges for it separately.
What Affects the Cost of an Air Source Heat Pump?
The biggest cost differences usually come from the property itself. The heat demand, existing heating system, and site conditions all affect the work required.
Property Size and Heat Demand
A larger home can need a larger heat pump and greater system capacity. A poorly insulated property can also have higher heat demand.
UK research shows how much property type can change installation cost. Nesta analysed MCS installation data across eight housing archetypes and found median upfront costs ranging from £8,960 to £13,300.
That spread is one reason a single national average can be misleading.
Radiators and Heat Emitters
Existing radiators can often be kept, but their heat output needs to match the lower flow temperatures used by a heat pump.
Some radiators may not provide enough heat at these temperatures. In that case, the installer may recommend larger radiators or alternative heat emitters.
Replacing several radiators can add a noticeable amount to the overall installation cost, so check whether radiator upgrades are included in the quotation.
Hot Water Cylinder Requirements
A combi boiler heats hot water directly, so many combi boiler homes do not have a separate cylinder.
A typical air to water heat pump setup can require a hot water cylinder. That adds equipment cost and takes up space in the home.
The available airing cupboard or utility space can therefore affect the installation plan.
Pipework Alterations
Older heating systems may not have pipework suited to the flow rates required by a heat pump.
The installer may need to alter sections of pipework. The amount of work depends on the existing system and the new design.
Electrical Work
A heat pump adds electrical demand, but a major electricity supply upgrade is not automatically required.
The installer should check the existing electrical supply before pricing the work. Any required upgrade should appear clearly in the quotation.
Insulation and Fabric Improvements
Insulation work is not automatically required before an air source heat pump can be installed. The condition of the property should be assessed to see whether improvements are needed.
The Energy Systems Catapult Electrification of Heat Home Surveys and Install Report found that 15% of properties required energy efficiency upgrades. In most cases, this involved loft insulation, with a smaller number receiving cavity wall insulation or door replacements.
This shows that insulation can form part of the wider installation work in some homes. It is not a standard cost that every household needs to add.
Noise and Outdoor Unit Positioning
The outdoor unit needs a suitable location. Neighbouring properties, available wall or ground space and noise limits can all affect that choice.
MCS 020(a) sets the calculation used for domestic air source heat pumps relying on permitted development in England. It uses a 37 dB(A) permitted development noise limit at the specified assessment positions.
A difficult site can therefore add design work or require measures that increase the project cost.
How Much Does the Boiler Upgrade Scheme Grant Cover?
The Boiler Upgrade Scheme reduces the amount paid by eligible homeowners. It does not normally cover the full installation cost.
From 21 July 2026, the standard grant for an eligible air to water heat pump in England and Wales is £7,500. An eligible off gas grid property replacing an oil or LPG system can receive £9,000.
These current Boiler Upgrade Scheme grant values apply from 21 July 2026.
Using the £13,300 benchmark above:
£13,300 − £7,500 = around £5,800
For an eligible off gas grid oil or LPG replacement:
£13,300 − £9,000 = around £4,300
These are examples only. Your final price can be higher or lower.
The Boiler Upgrade Scheme is already operating at significant scale. According to Ofgem’s Boiler Upgrade Scheme Annual Report for April 2025 to March 2026, there were 45,880 applications during 2025/26.
Of these, 39,435 vouchers were issued and 31,104 low carbon heating systems were supported. Air source heat pumps made up 97.6% of grants paid since the scheme began, showing that they account for the vast majority of installations supported through the scheme.
Do Grants Differ Across the UK?
There is no single heat pump grant covering every part of the UK. Each nation has its own support arrangements.
England and Wales
The Boiler Upgrade Scheme applies in England and Wales. Eligible air to water heat pumps can receive £7,500. The enhanced £9,000 grant applies to qualifying off gas grid oil or LPG replacements.
Scotland
Scotland uses the Home Energy Scotland Grant and Loan Scheme rather than BUS. It provides up to £7,500 as a grant and up to £7,500 as an interest free loan for a heat pump.
Eligible rural and island homes can receive an additional £1,500 clean heating grant uplift. The scheme had funded more than 6,500 heat pumps by December 2025.
Northern Ireland
Northern Ireland has separate local support arrangements. Heat pump funding can be available through programmes such as Toasty Homes, rather than through the Boiler Upgrade Scheme.
The grant available therefore depends on where the property is located. A £7,500 BUS figure should not be presented as a UK wide grant.
Do You Need Planning Permission for an Air Source Heat Pump?
Planning rules differ across the UK, so one national answer does not apply to every property. In England, domestic air source heat pumps can generally use permitted development rights when the conditions are met.
These conditions include a 1.5m³ size limit for houses, restrictions on the number of units and compliance with the relevant noise requirements. MCS 020(a) provides the required sound calculation for permitted development installations.
Wales has its own permitted development rules. The updated Welsh requirements took effect on 1 June 2026. Scotland and Northern Ireland also operate under separate planning frameworks.
Check the rules for the nation and property before installation. The outdoor unit location can also affect the planning position.
Are Heat Pump Prices Expected to Fall?
Yes, heat pump prices are expected to fall gradually, but current UK research does not indicate a sharp drop in the near term.
A 2024 peer reviewed study by researchers at the University of Edinburgh and Imperial College London found no significant reduction in average UK installed heat pump costs over the previous decade. It also forecasts a 20% to 25% reduction between 2020 and 2030.
That forecast points towards steady cost reductions over several years. It does not suggest that waiting until 2027 or 2028 will guarantee a much cheaper installation.
Why an Accurate Price Requires a Property Survey
An online price range can give you a rough budget, but it cannot account for the condition and layout of your heating system. The installer needs to assess the property before confirming the equipment required and the total installation cost.
A proper survey should look at:
- Heat loss
- Room sizes
- Existing radiators
- Hot water demand
- Pipework
- Electrical requirements
- Outdoor unit positioning
These checks help the installer calculate the required heat pump capacity and identify any additional work. This could include radiator upgrades, pipework changes or electrical work.
That is why a survey based quotation can differ from a basic online estimate.
For larger heating or mechanical projects, our commercial mechanical services can provide a separate route for non domestic enquiries.
FAQs
Is £10,000 enough for an air source heat pump?
It can be enough for a smaller, straightforward property. The research supports a broader £10,000–£15,000 planning range before grants.
Does the £7,500 grant cover the whole installation?
No. It is a contribution towards the installation. A £13,300 benchmark would leave around £5,800 after a £7,500 grant.
Can a heat pump cost £15,000 or more?
Yes. Larger homes and complex retrofits can exceed £15,000, particularly where extra heating, electrical, insulation or structural work is needed.
Will existing radiators have to be replaced?
Not necessarily. The installer should check whether existing radiators can provide enough heat at the required operating temperature.
Does every property need insulation upgrades first?
No. In the Electrification of Heat demonstration, only 15% of properties required energy efficiency upgrades.
How efficient is a heat pump in real UK homes?
A well designed heat pump can deliver around 2.5–3 units of heat for every unit of electricity used, even in typical UK homes.
Conclusion
Air source heat pump costs typically fall around £10,000–£15,000 before grants in the UK. Property size, heat demand, radiators, hot water, pipework and site conditions affect the final price. Grants can reduce upfront costs, but only a property survey can establish the actual installation cost for your home.
Want an accurate price for your property? Get in touch to arrange a survey and discuss your heating options.
