Don't you need a relatively large m2 of land for a ground source heat pump?
Answered my own question, 400m2 for 8kW, or bore holes 100-150m deep.
Other sources are available. Not many people want a huge industrial looking box in their back garden though (air source).
@Polygon started
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Don't you need a relatively large m2 of land for a ground source heat pump?
Answered my own question, 400m2 for 8kW, or bore holes 100-150m deep.