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A heat pump is an electrically powered heating system which quite literally pumps freely available energy out of the ground or air. The clever bit is that it typically uses one unit of electricty to deliver 3 to 4 units of heat into your building. This is known as the coefficient of performance or COP for short and it means that heat pumps are cheap to run and are low in carbon emissions.
Depending on where the heat pump extracts heat from it's either known as a ground source or air source heat pump.
Ground source are the most efficient because they extract heat from the earth which has a constant temperature all year round at depth. In order to do this either ground loops or boreholes are required.
Air source heat pumps are therefore far easier to install, but operate at lower COP, especially in winter when air temperatures are low.
1 World Solar can supply both types, using specialist contractors to bury ground loops or drill boreholes for ground source heat pumps.
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For further detailed information on ground source heat pumps their is an excellent guide published by the Energy Savings Trust, which is available by clicking on this link:
Domestic Ground Source Heat Pumps: Design and installation of closed loop systems - A guide for specifiers their advisers and potential users.
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