How does evaporative cooling work?
Evaporative cooling is the same process your body uses to cool itself. When you perspire, and air moves across your skin, a portion of the perspiration (water) evaporates. Evaporation requires heat to change liquid water-to-water vapor and this heat is taken from your skin, producing the cooling effect. In an evaporative cooler, the cellulose cooling pads take the place of your skin, water instead of perspiration wets them and a fan moves the air. The air is drawn through the cooling pads and evaporates moisture. Heat is removed from the air, as it is drawn through the wet pads, dropping the air temperature and producing the cooling effect. The cooled air is then forced through a building or space and displaces the warm air out building openings, cooling the surroundings. In addition, air velocity increases the cooling effect as it moves over the skin or people in the airflow path.

Why use evaporative coolers?
The WayCool/Pro-Kool evaporative coolers require little space and are simple to operate and require minimal scheduled maintenance.
In many cases, evaporative coolers are a better solution than mechanical refrigeration systems because they are more economical to operate and maintain and do not use environmentally sensitive and costly refrigerants.
Simply adding more units can accommodate larger areas. With proper sizing and application, WayCool/Pro-Kool portable evaporative coolers can lower the effective air temperature by up to 20 degrees. Even in high humidity, the efficiency of the evaporative cooler provides effective cooling.

Maintenance?
Regular cleaning: The frequency with which the WayCool/Pro-Kool is cleaned will depend on the environment in which it is used. The WayCool/Pro-Kool evaporative cooler also acts as an air filter and removes dust and other particles from the air. This dirt collects on the cooling pads and lowers cooler efficiency. The more dirty the environment the more often it will need cleaning. In most cases the WayCool/Pro-Kool will need to be cleaned weekly.
A dirty water supply will quickly reduce the unit's performance and the unit will require more frequent cleaning to maintain cooling effectiveness. Always try to use a filtered, treated water supply.