Plus, don't GSHPs need quite a lot of land for the piping? Houses in the UK are ... | Hacker News

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		GordonS on Sept 24, 2022 \| parent \| context \| favorite \| on: Homemade Heat Pump Manifesto (2009) Plus, don't GSHPs need quite a lot of land for the piping? Houses in the UK are built on the smallest possible plots of land :( It's normal for temperatures in Scotland to dip below -5C over winter - do ASHPs not work at those temps?

fest on Sept 24, 2022 [–]

For horizontal designs yes- the rule of thumb is the brine coil area should be around 3x the heated area. However, the vertical bores don't need much area, just expensive drilling work.

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