also known as the 'brine' - to absorb the naturally occurring thermal energy stored in the ground. The pipes may be laid either as a series of coils or 'slinkies' in shallow trenches, or as a vertical ...
According to the Energy Saving Trust, buying and installing a ground source heat pump can cost as much as £28,000 if your ground loop is buried in trenches, or £57,000 if you need to dig a borehole.