Solar pool heating is a cost-effective way to warm the water in your pool. The initial investment is significantly lower than that of a heat pump, and there are no ongoing costs. This method is ideal for quickly heating the pool during warm weather. Your pool pump circulates water through the solar collectors. As the water passes through the dark, heat-insulating mat, it is warmed by the sun. The warm water then flows back into the pool. The number of solar mats per pool is based on an average of eight hours of sunlight per day. The degree of heating depends on various factors, such as weather conditions and whether the pool is covered at night. Suitable for 32 and 38 mm hose systems.