How Much Does A Ground Source Heat Pump Cost in the UK?

get answers to your questions about the cost of installing a ground source heat pump or air source heat pump.

If you're currently considering installing a heat pump in your home it's likely you have a few questions about how they work, what they cost and what funding is available. Here at Thermal Earth we understand these are some of the most important questions and so we've set out to answer them as openly and honestly as we can, so that you can make an informed decision about installing a heat pump.


What is a heat pump & how do they work?

Heat from the sun is constantly warming our planet. A heat pump is an electrically driven heating system that absorbs this solar heat either from the air, earth or water.

Heat pumps absorb heat energy at one temperature and releases it at another temperature. Some heat pumps  are designed to  only create heat (low temperature energy is taken into the heat pump and upgraded to a higher temperature), whereas others can also provide cooling and take in high temperature heat energy and cool it - working in much the same was as a refridgerator. 

Heat pumps use a small amount of electricity to compress heat into a suitably high temperature – ready to be used for space heating and hot water to almost any building.

Learn More About Heat Pumps


How much do heat pumps cost to install?

This table shows you the average prices of installing one of the MasterTherm heat pumps. We've given examples of air source heat pump costs and ground souce heat pump costs for homes of differing sizes.

Average Heat Pump Costs for Homes
House Size Air Source Heat Pump (ASHP) Ground Source Heat Pump (GSHP)
2-3 Bed, approx 60-80m² £7,500 - £9,000 £9,000 - £11,000
3-4 Bed, approx 80-100m² £8,000 - £10,000 £10,000-£12,000
3-4 Bed, approx 100-140m² £10,000 - £12,000 £12,000 - £14,000


There are many different factors which could affect the pricing of your installation, these include:

  • The system your home is currently using
  • Whether your home is on or off grid
  • How many boreholes are required and where they need to be drilled
  • Size of your land e.g. if you have enough land to lay horizontal ground kits, these are more cost efficient than digging a borehole 


How Much Maintenance is Required for a Heat Pump?

Once installed, heat pumps require very little actual maintenance. Heat pumps are designed to be work in the background with minimal fuss, providing your property with heating and hot water whenever you need it.

If properly monitored online the only on-going maintenance that’s required from property owners to their heat pump is booking an annual service to ensure all the components are working as they should be and your heat pump system is working to maximum efficiency.

Heat Pump Service and Call Out Costs


How Long Do Heat Pumps Last?

With annual servicing your heat pump can last approximately 15 years for an air source heat pump and 20 to 25 years for a ground source heat pump. Ground loop kits (which are used to collect the heat energy) can last over 100 years.


What Funding Options Are There For Installing a Heat Pump?

These are some of the most popular funding options, however if you'd like further advice please get in touch we can provide more information.


(Renewable Heat Incentive) RHI

The renewable heat incentive aims to help drive forward the adoption of sustainable energy systems in the home to help reduce carbon emissions and meet renewable energy targets. The scheme began in April 2014 and was originally set to end in March 2021, however due to COVID-19 the incentive has been extended until March 2022. When you sign up to the scheme you will receive quarterly payouts for the amount of green energy your household produces, for up to 7 years after the heat pump is installed.  

Limits have been set on how much you can earn from the scheme which are:

  • Air Source Heat Pump installation limit is 20,000 kWh: You could earn up to £1,348 a year for 7 years = £9,441
  • Ground Source Heat Pump installation limit is 30,000 kWh: You could earn up to £4,573 a year for 7 years = £32,011

With the RHI scheme, at the end of the seven years you could have completely covered the cost of installation of your heat pump.

Find out more about the RHI scheme


We hope you found this article helpful for learning more about the costs of heat pumps. If you have any further questions we are always happy to help. With over 15 years experience in the industry and over 2500 systems installed around the UK, we can offer in-depth advice and knowledge to help you with your switch to a renewable heating system. 


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