4 ms·

We have a ground source heat pump and one summer we were away and did not use out air conditioning that year much at all. Mid winter our return loop temperature

by jmacd 5y ago

We have a ground source heat pump and one summer we were away and did not use out air conditioning that year much at all. Mid winter our return loop temperatures (the glycol being brought in to our heat pump after circulating in the ground) was at one point 3 degrees C cooler than it had been any other year. Quite a noticeable difference. For reference, our loops are 8 vertical at 250ft.

FredPret 5y ago
Wait, do you need eight 250ft wells?
- tinco 5y ago
  Yeah for a family home that seems about right. 250ft is not very deep at all, and you need to store a lot of energy to past a whole winter/summer.
- jmacd 5y ago
  For a closed loop system, yes. I think that would be the minimum (6000 sq ft house) at 250ft depths.