Is it better to keep a pool warm or let it cool off between weekends?
15 degrees overnight making it harder for the heater to maintain a constant temp. Your heater will expend more energy ~ waste fuel ~ just trying to make up the lost heat than it would if you ran it all the time. My thinking is that you are a very wasteful person to use up resources. Money must be of no concern for you as I think it must be costing close to or even exceeding $800 per month to heat a pool even in Calif. Also, even if you have an extremely efficient pool heater you are still adding harmful gases to the environment. How inconsiderate of you.