Moderate latent heat in the ground can be harnessed to generate significant additional heat within buildings for use as hot water or for space heating.

Using pipes that are buried underground (either vertically in bore holes or horizontally in trenches), heat can be extracted from the ground throughout the year. An antifreeze mixture within the pipes absorbs the ground’s heat and then passes it through a heat exchanger into your existing heating system.

 

It is possible to extract up to six times as much energy (in the form of heat) from the ground as has to be put into the system to operate it (electricity), making it one of the most efficient technologies available. With minimal maintenance, virtually no visual impact and heat bills lowered between 30% and 70%, ground source heat pumps make an attractive investment.