How much space do I need for a ground source heat pump?
The most cost effective ground loop for our heat pumps is a slinky formation. This requires about twice the heated floor area of the property. For instance if the foot print of your property is 75m2 and has two floors you would require about 300m2 of land. Using a bore hole is higher cost but can be done with very little ground, perhaps around 5m x 5m. Rather than bore holes you may also want to consider an air source heat pump.
