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Air source heat pump cost guide

If you’re looking for a clean way to heat your home whilst saving money on your energy bills, then an air source heat pump could be for you. Keep reading to find out more about the average air source heat pump cost in the UK.

What is an air source heat pump?

An air source heat pump uses the energy from the outside air to heat the building. It’s a very energy-efficient way of generating heat and is supported by the government’s Renewable Heat Incentive (RHI) scheme.

Installation of an air source heat pump does generally cost more than more traditional heating systems but have very low maintenance costs. They can be installed anywhere in the UK to provide heating and are a good option if you’re planning to minimise the environmental impact of your home.

ItemRange - LowRange - HighAverage cost
Supply and install air source heat pump£9,000


How much does an air source heat pump (ASHP) cost?

On average the supply and installation of an air source heat pump will cost in the region of £9,000-£11,000. This is more expensive than many traditional heating systems, but the benefit to the environment is considerable.

The high cost of installation has often been deemed a problem for many homeowners, when compared to a new gas boiler installation for example. However, the real benefit comes both in the carbon-free emissions and the significant reduction of ongoing energy bills.

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Reduce the cost with RHI

To help homeowners invest in green energy solutions, the government has introduced a financial subsidy called the Renewable Heat Incentive (RHI). If you meet all the criteria, then you could be given around £1,000 per year, as a contribution for the costs of your air source heat pump installation.

Benefits of air source heat pumps

There are a number of benefits from installing an air source heat pump:

  • Cheaper energy bills
  • Installation costs subsidised by the government (for eligible homes)
  • Lower carbon emissions
  • Minimal maintenance needed
  • Heats air and water for your home
  • Doesn’t use fossil fuels
  • No danger of dangerous gases being emitted

One thing to note is that during winter, you may need to have your ASHP on constantly. This is because heat pumps deliver heat at lower temperature over much longer periods.

How does an air source heat pump work?

There are two main types of ASHP available: air-to-water and air-to-air.

Air-to-water ASHP

An air-to-water heat pump is the most common model in the UK and works by absorbing heat from the air outside and transfers the heat to water. This type of heating system distributes through your wet central heating system and work more efficiently at lower temperatures than a standard boiler system.

An air-to-water heat pump is particularly well-suited to underfloor heating, where it gives out lower temperature heat over longer periods of time.

Air-to-air ASHP

An air-to-air heat pump uses a fan system to absorb warm air from outside and circulate it around your home. This type of heating system doesn’t support water heating and isn’t eligible for the government’s Renewable Heat Incentive (RHI) scheme.

Useful air source heat pump checklist

  • Speak to a local air source heat pump expert for their professional advice and accurate quotes.
  • The installation cost for an ASHP is £9,000-£11,000, but the RHI scheme may contribute up to £1,000 towards this.
  • Research your eligibility for the RHI scheme to see if you qualify for the government subsidy, and how much.
  • Shop around for fair and competitive prices for an air source heat pump.
  • Always hire a tradesperson with proven experience and ideally a heat pump installer who is accredited to the Microgeneration Certification Scheme (MCS).

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