Jacks Solar installed ours. I do know there is a caution during freezing temps (may need to run the solar system during the nite the temps drop), but am not aware of using the solar because it gets too hot. We set our solar thermostat at about 83, and I dont think it has run since beginning of July, as the lanai faces west, so the sun heats the pool water to 87+ on a normal 90-degree day. And overnite it has been staying above 85 so there isnt much heat loss right now. I expect that to change in the next few weeks.
Like another poster said, call Jack, definitley no pressure, and knows the solar business.
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