Evaporative air conditioning uses evaporation to cool the air. In an evaporative cooler, a pump circulates water from the reservoir onto a cooling pad, which in turn becomes very wet. A fan draws air from outside the unit through the moistened pad. As it passes through the pad the air is cooled by evaporation. The key to effective evaporative cooling is ensuring that each of the cooling pads are completely saturated at all times during operation and that the system's fan and motor are sized and designed to deliver the appropriate airflow for the home. Evaporative coolers offer many benefits to the environment over standard air conditioners. They consume only a small portion of electricity compared to refrigerated systems, thereby insuring less fossil fuels like coal and natural gas are being consumed. Evaporative coolers contain no harmful synthetic refrigerants, and CO2 emissions are much lower with an evaporative cooler compared to refrigerated alternatives, thus reducing greenhouse gases.
*Evaporative coolers are not recommended for properties with wood floors.