Ground source heat pumps are an exceptionally carbon-efficient technology that provide space and hot water heating.
- Fuel bill savings. Ground source heat pumps can reduce your space heating costs by 50%. They are much cheaper to run than direct electric heating systems, as well as oil, solid fuel, LPG, and gas boilers.
- Renewable Heat Incentive Payments
- Fuel independancy. Ground source heat pumps are a much more convenient renewable option than biomass boilers.
- Protection from rising energy costs.
- Preserves the environment. Ground source heat pumps offer a clean, sustainable, and efficient way of providing heating and hot water.
- Reduces our dependence on fossil fuels. This also reduces our collective CO2 emissions.
Anticipated Return on Investment over 20 years for a previous installation
Figures are based on the generation of 18,000 kWh of heat and presume a ground source heat pump with a 35° floor temperature using underfloor heating. Initial outlay of £30,000 - read more here
How they work
Ground source heat pumps extract heat from the ground and concentrate it for use in the home. This is possible even when the weather is cold, as even cold ground contains plenty of usable solar energy. In the UK, the year round ground temperature is a fairly steady 6-12 degrees Celsius.
To extract heat, a mixture of water and anti-freeze is circulated through a buried pipe. This part of the system, called a ground loop, can be laid horizontally or vertically dependant on the site. The fluid in the loop absorbs low-level heat from the ground and carries it to the heat pump for use in the home.
Heat pumps need a relatively small amount of electricity to convert heat from the environment into usable heat. Ground source heat pumps can effectively turn 1 kilowatt of electricity into 3 kilowatts of "free" heat from the ground. This is compared to an A-rated combined boiler, which turns 1 kilowatt of gas or oil into 0.9 kilowatts of heat.
Ground source heat pump thermal stores
To accompany your ground source heat pump, we recommend the installation of a thermal store.
With a range of input/output connections, a thermal store is a large capacity cylinder that can supply your hot water and act as a reservoir for heat from a number of different sources, including solar thermal systems, conventional boilers and heat pumps. In this way you can ensure you receive the maximum benefit from this type of heat capture and use.
If you have any questions about ground source heat pumps, our Frequently Asked Questions page may be of help to you.
If you are interested in ground source heat pumps or require more information, please contact us - you can speak to one of our Energy Team, who are trained to offer you the most up-to-date and accurate information.