A solar pool heating system circulates the pool water through polypropylene mats and back into the pool. The temperature of the water is raised significantly as it passes through the mat. To control the the temperature of the pool water, a differential thermostat can determine whether or not additional heat is needed. The system can be integrated with existing filter pumps by the use of a 3-way valve.
Heating and cooling
The system can also be used to cool down the pool during the hot summer months. Under this operating mode, the system will run only at night and refresh the pool water that circulates through the solar mats, when the outside temperature is colder.