Looks like spring will finally be arriving this week after unseasonably cold and rainy weather. Temps will be rising about 25 degrees from the 60s to lower 90s in just a couple days. I want to heat up the pool to so we can kick off our Covidcation.
Does pump speed have any effect on the heating speed and efficiency?
I thought I saw a recent thread indicating a higher speed was more efficient. With a balance of solar generation credit, I'm not worried about electrical costs. With a VS, my lower pump speed is1600 1800 rpm and higher speed is 2500 rpm.
I found a Pool Heater Time Calculator online that indicates I can increase water temp of 18,500 gallons from 65 to 85 degrees in about 6 hours with a 400K BTU heater and solar cover. Does this seem accurate?

Does pump speed have any effect on the heating speed and efficiency?
I thought I saw a recent thread indicating a higher speed was more efficient. With a balance of solar generation credit, I'm not worried about electrical costs. With a VS, my lower pump speed is
I found a Pool Heater Time Calculator online that indicates I can increase water temp of 18,500 gallons from 65 to 85 degrees in about 6 hours with a 400K BTU heater and solar cover. Does this seem accurate?

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