Average Cost of an Air Source Heat Pump in the UK (2026)
The average cost of air source heat pump installation in the UK is around £11,000, although prices can vary depending on property size, insulation, radiator upgrades, cylinder requirements, and installation complexity. Eligible homeowners may receive £7,500 through the Boiler Upgrade Scheme, reducing the upfront cost.
Quick Answer: On average how much does and air source heat pump cost in the UK?
The average cost of an air source heat pump is not just the price of the unit — it is the full system design, installation, and any home upgrades needed.
What Is the Average Cost of an Air Source Heat Pump in the UK?
Because every home is different, the final cost can vary based on property size, insulation, heating setup, and installation requirements — meaning your actual contribution could be much lower once the right system and available grant support are taken into account.
Typical Air Source Heat Pump Cost Before Grants
Most air source heat pump installations in the UK typically cost between £8,000 and £18,000+ before grants, depending on the property size, heating setup, insulation levels, and any upgrades required. Larger or older homes may need additional work, which can increase the overall installation cost.
Why Do Air Source Heat Pump Prices Vary So Much?
Every home is different, so installation costs can vary. Property size, heating demand, and upgrade requirements all affect the final price.
Property Size and Heat Demand
Larger homes usually need bigger heat pumps to produce enough heating and hot water. Homes with higher heat loss may also require more powerful systems.
Hot Water Demand
Most air source heat pump systems need a hot water cylinder. The size of the cylinder depends on how many people live in the home and how much hot water is used daily. Higher hot water demand may increase the overall system cost.
Installation Complexity
The cost can rise if the installation needs extra pipework, electrical upgrades, outdoor unit preparation, difficult access, or changes to the existing heating system. A home survey and heat-loss calculation help identify these requirements before giving an accurate quote.
Air Source Heat Pump Cost by Brand
Air Source Heat Pump Running Costs
Air source heat pump running costs depend on how much heat your home needs, your electricity price, and how efficiently the system runs. The key number to understand is SCOP. This shows how much heat the heat pump produces for each unit of electricity it uses.
For example, if a heat pump has a SCOP of 3.5, it can produce around 3.5kWh of heat from 1kWh of electricity. So, if your home needs 10,000kWh of heat per year, the heat pump would use around 2,857kWh of electricity
10,000kWh heat demand ÷ 3.5 SCOP = 2,857kWh electricity used
If electricity costs around 26p per kWh, the estimated running cost would be:
2,857kWh × £0.26 = £742.82 per year
So, for a home needing 10,000kWh of heating per year, the running cost could be around £740–£750 per year, depending on the tariff, system design, insulation, and usage.
| Annual Heat Needed | SCOP 2.8 | SCOP 3.5 | SCOP 4.0 |
|---|---|---|---|
| 8,000kWh | ~£743/year | ~£594/year | ~£520/year |
| 10,000kWh | ~£929/year | ~£743/year | ~£650/year |
| 12,000kWh | ~£1,114/year | ~£891/year | ~£780/year |
A higher SCOP means lower running costs. A heat pump works more efficiently when your home is well insulated, radiators are correctly sized, and the system can run at lower flow temperatures, usually around 35°C–45°C. If the system has to run hotter, such as 50°C–55°C, it may use more electricity.
Can You Get a Grant for an Air Source Heat Pump?
Yes, many UK homeowners can get support through the Boiler Upgrade Scheme, which currently offers £7,500 towards the cost and installation of an air source heat pump. The grant is designed to reduce the upfront cost, making the switch more affordable for eligible homes in England and Wales.
You usually do not receive the grant money directly. Instead, your MCS-certified installer applies for the grant on your behalf and deducts the amount from your quote. This means the £7,500 support is normally taken off the installation cost before you pay the remaining balance.
To qualify, your property must meet the scheme rules, and the system must be installed by an approved installer. The grant can help cover part of the total project cost, but you may still need to pay for extras such as radiator upgrades, a hot water cylinder, electrical work, or any additional installation requirements.
Is an Air Source Heat Pump Worth the Cost?
Yes, for many UK homeowners, an air source heat pump is worth the cost because it is not just a heating replacement, it is a long-term upgrade for your home. It can deliver efficient heating, support hot water, reduce reliance on gas, and help protect your home from rising energy costs over time.
The upfront price can look higher than a standard boiler, but the £7,500 Boiler Upgrade Scheme grant can make a big difference for eligible homes. When the system is correctly designed, installed, and matched to your property, a heat pump can provide steady warmth while using energy more efficiently.
It is especially worth considering if you plan to stay in your home for several years, want a more future-ready heating system, or are already thinking about improving insulation, radiators, or overall energy performance. A proper home survey will show exactly what your property needs and whether a heat pump can give you the best long-term value.
FAQs
Frequently asked questions (FAQs)
Simple answers to common questions about air source heat pump cost in the UK, including installation prices, grant support, running costs, radiator upgrades, hot water cylinders, and whether the system is worth the investment. Speak to Simple Green Energy.
Want an accurate cost?
Speak with Simple Green Energy to check your property, heat pump size, grant eligibility, radiator setup, hot water needs, and expected installation cost.
Get heat pump quoteFinal Thoughts
Air source heat pump cost in the UK can vary depending on your home, system size, brand, radiator setup, hot water needs, and installation work. That is why the cheapest quote is not always the best options, the right system should be properly designed around your property, not guessed.
With the £7,500 Boiler Upgrade Scheme grant, many UK homeowners can reduce the upfront cost and make the switch more affordable. When installed correctly, an air source heat pump can offer efficient heating, reliable hot water, and better long-term value compared with staying with an older heating system.
The best next step is a proper home survey. This will confirm your heat loss, suitable kW size, radiator requirements, cylinder needs, and final cost after grant support.
