Pool panels are a simple way to keep your swimming pool warm in Colorado's changable climate; they are the quickest return on your money of all renewable energies. These panels are mounted on your roof or rack in the yard. The pool water that your pump circulates through the filter and heater is used to divert actual pool water through these black plastic panels. As the water passes through this network of tubes, the heat is taken out of them and put into the passing water that returns to the pool hotter than it left. These systems can be set up to run automatically when the panels are hot enough, or bypass valves can be set up to run the system manually without buying fancy controls. Make your pool season longer and cheaper with these simple durable panels.