A solar swimming pool heater uses your existing pump to circulate the water in your pool through the system. The process begins with an automatic control that senses any change in sunlight or water temperature and relays this information to a control valve. The control valve then diverts or “channels” the pool water to the collectors, when sufficient energy is available, or bypasses them when heat is not needed. The water is efficiently heated by the collectors, which can be mounted either on a roof or a ground rack, as it flows through the passageways within the collectors. The water then flows back into your pool through the return lines at your desired temperature.