Highest Performing Design - DIY Solar Pool Heater Kit - 15-20 Year Life Expectancy (5-4x10 / 1.5" I.D. Header)

I built the shade canopies on the side where the sun sets. The black panels are plastic tube sheets for solar heating to extend the swim season BUT if the pump runs at night when the air is cooler the air draws a lot of heat out of the water running through the panels. Once the water temp gets close to 90 I’ll run the pump at night and it can cool 3-5deg. https://a.co/d/0hw9O6Of They are normally installed on a house roof I think and running vertical. I did have to figure out a good bit of plumbing.