I guess I could just install some valves and make the lines reversible to put the exchanger on the return side of the loop to pump heat into the ground but I would think the heat might be better off helping the 6000 watt water heater? The extra loop heat would also make it work harder for cooling... My loop is in a clear grass field 8-9' deep that gets full sunlight all summer so I think the recovery is all right - it sounds like the loop is just too small... I know the installer told me the horizontal loops have been outperforming the vertical ones they've put in, at least around here on the prairie anyways...
My heat pump preheats our hot water in heating mode but not in cooling mode, which is weird because I thought the whole point of the water preheat option on the pump was to use the "free" rejected heat to help the water heater out but maybe I misunderstood?
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