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Old 05-22-17, 05:05 AM   #2
DEnd
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Join Date: Nov 2011
Location: NC
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You'll run out of heat storage fairly quickly. At 14k gallons you have 116,836 btu's per degree of water temp. We should assume the starting water temp will be around the average ground temp, so lets be generous and say 65ºF and we can extract heat down to say 35ºF so a 30ºF temperature delta. That gives us about 3,505,080 btu's or 100 hours of heat. Now it will absorb some heat from the surrounding soil so you can get more than that, and the sun room will add a bit more, but the fact is there just isn't all that much heat storage in there.

That said heating the pool during the shoulder seasons with the heat pump, when the house calls for A/C can be a great way to extend the swimming season and increase the efficiency of the system. There are several systems your HVAC guy can install for you. The biggest benefit however is savings on pool heating, so if you don't heat your pool anyway you may not see much savings.
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