Air Source Heat Pump Cost UK
Find out how much an air source heat pump costs to install in the UK, what affects the total price, and which upgrades can increase or reduce the final bill.
How Much Does an Air Source Heat Pump Cost?
In the UK, a typical air source heat pump installation usually costs between £7,000 and £13,000. The total price depends on your property size, heat demand, existing heating system, and whether extra work is needed for radiators, hot water, or insulation improvements. If you’re still comparing systems, see our Best Air Source Heat Pumps UK guide to understand how different models affect overall cost.
Well-designed systems in straightforward homes are usually at the lower end of the range, while larger homes or more complex retrofits can cost more.
Typical Installation Costs by Property Type
| Property Type | Typical Installed Cost |
|---|---|
| 2-bed house | £7,000 – £9,000 |
| 3-bed house | £8,500 – £11,000 |
| 4-bed house | £10,000 – £13,000+ |
What Is Included in the Price?
A full air source heat pump installation often includes:
- Outdoor heat pump unit
- Hot water cylinder where required
- Controls and thermostat setup
- Pipework and fittings
- Installation labour
- Commissioning and setup
Some quotes may also include radiator upgrades, buffer tanks, or electrical works, while others price these separately.
The quality of components and controls included can make a significant difference to performance, which is why many homeowners also look at the best smart thermostats for heat pumps to improve efficiency.
What Increases the Cost?
Property Size
Larger homes usually need larger systems and sometimes more radiator upgrades, which increases the total price.
Radiator Upgrades
Heat pumps work best at lower flow temperatures, so some homes need larger radiators or extra emitters to perform properly. If you’re unsure whether your current system is suitable, read our guide on whether you need new radiators for a heat pump.
Hot Water Cylinder
If you are replacing a combi boiler, you may need a new cylinder and associated plumbing works. This is one of the key differences when comparing systems, especially if you’re deciding whether a heat pump is worth it for your home.
Electrical Work
Some installations require consumer unit upgrades, isolators, or other electrical changes.
System Complexity
Older homes, unusual layouts, and harder installation access can all increase labour time and cost.
Installation complexity can also affect long-term performance, which is why system design is just as important as upfront cost. You can see how this impacts real-world performance in our heat pump running costs guide.
Boiler Upgrade Scheme Grant
The Boiler Upgrade Scheme can reduce the upfront cost of a heat pump installation for eligible homes in England and Wales. This government support can make a major difference to the real out-of-pocket cost of switching from fossil fuel heating.
Heat Pump Cost vs Gas Boiler
Heat pumps are usually more expensive to install than gas boilers, but they can offer lower carbon emissions, long-term efficiency benefits, and lower running costs in well-designed systems.
- Gas boiler: lower upfront cost
- Heat pump: higher upfront cost but potentially better long-term performance
For a more detailed breakdown, see our full comparison of heat pump vs gas boiler costs.
Typical Extra Costs to Consider
| Extra Item | Typical Cost Range |
|---|---|
| Radiator upgrades | £500 – £2,500+ |
| Hot water cylinder | £800 – £2,000+ |
| Electrical upgrades | £300 – £1,500+ |
| Insulation improvements | Varies widely |
How to Get Better Value from a Heat Pump Installation
- Make sure the system is correctly sized
- Do not choose on brand alone
- Check whether radiators are suitable at lower temperatures
- Improve insulation where it makes sense
- Use good controls and smart thermostats designed for heat pumps
Before You Choose a System
Cost is only one part of the decision. The type of heat pump you choose can significantly affect performance, noise levels, and long-term efficiency.
A lower-priced installation can cost more in the long run if the system is undersized, badly commissioned, or paired with poor controls. Always think about both installation cost and running cost together.
Related Guides
Next Step
Once you understand installation costs, the next step is comparing running costs and the products that can improve efficiency.