Dura 7 Air Heat Pump Swimming Pool Heater 7Kw / 24000 Btu

Dura 7 Air Heat Pump Swimming Pool Heater 7Kw / 24000 Btu: "DURATECH® heat pumps utilize the sun’s free heat by collecting and absorbing energy from the outside air. This energy is then transferred to the pool water. Your existing pool pump circulates the water through the heater and warms the pool. The unit contains a fan that draws in outside air and directs it over the surface of the EVAPORATOR (energy collector)."