What are they?
Ground source heat pump systems extract low temperature energy from the earth for use in a building. The units are usually placed in an outbuilding or utility area.
How do they work?
Solar energy is absorbed into the earth’s surface all year round warming the ground. As long as the amount of warmth extracted from the ground does not exceed the amount absorbed, it is a sustainable source of renewable energy.
A Ground source heat pump (GSHP) extracts this low temperature energy from the ground and converts it to higher temperatures that can be used for space and water heating.
Coils are installed horizontally in shallow trenches under the ground or vertically in deeper boreholes.
Ground source heat pump systems reduce heating bills, protect against rising energy costs and lower CO2 emissions.
According to the Energy Saving Trust, the potential annual savings in a typical three bedroom semi-detached house could be up to £610.