If you are tired of a cold swimming pool, then this outdoor solar water heater is perfect for you. This solar swimming pool heater is designed to heat pool in a green and energy-saving way. It connects to 1.5 inch hoses. Solar energy is magnified through the clear lens of the heater like the greenhouse effect and captured by black coiled hoses that carry pool water. This swimming pool heater can extend your swimming season with warm water and heat your pool to a warm and comfortable temperature.