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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.

  • I think you also need a reasonably heat efficient house to begin with. The heat you get from heat pumps is at a low temperature, so if you're losing loads of heat through solid walls or draughty windows you house will never heat up

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