So I'm also wondering how well a heat pump would work with this. Obviously it won't work well in ac mode.
Say I hear the water and pump it to the heat exchangers that heat the house and those heat exchangers will bring down the temp of the water to a certain point but if I also run the cooled water to a water/refrigerant heat exchange to extract that last bit of heat out of the water before it returns to the WMO burner. I have two 12k btu ac units that are on the chopping block I it t haven't found what I want to do with them.
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