Evaporative cooling is an economical alternative to standard central air conditioning which is used mostly in the western United States.

The concept involves pumping water from the bottom tray of an evaporative cooler up to distributor tubes.  The water is routed through the distributor tubes and is directed out to the sides of the cooler where it is dropped onto a cooling media.

A fractional horsepower motor is used to spin a blower cage which moves the air out through the cooling media.  The air is cooled as it passes through the wet cooling media, creating "cooled air".