Visit SiteOne of the most common questions about solar panels is; Does the height of my house have any bearing on the performance of the panels. The answer is not really because the pump pushes the water up to the roof and once up there it has to come down, and as it does, it creates a siphon effect that pulls water up to the roof so the pump does not work any harder than normal operation. The more panels you have means the water will flow through them slower and will get warmer. A rule of thumb is that the square feet of the solar panels equals the surface area of the pool.
The solar panels that are mentioned below are used in a very northern city, Vancouver, B.C., Canada. If you have ever been to Vancouver you will probably have had some experience with rain. We have about 2 full months of sun in the summer interspersed with rain and that brings down the temperature of the pool water considerably. I also have large trees to the east of me and I don’t get the sun on the panels till about 9 A.M. and the sun has been up since 5 A.M. My house roof slopes east and west. A lot of solar panel manufacturers say that the solar panels should be on the west side of the roof for maximum efficiency, that very well could be, but I swim when I get home from work, and like to swim in 82 to 84 degrees Fahrenheit, 26 – 28 degrees Celsius water. So the sun has been on the solar panels all day.