User`s manual
4
HOW EVAPORATIVE COOLING WORKS 
Figure WC-1HP.02 - Evaporative Cooling Principle 
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 blows across the cooling pads and evaporates moisture. Heat is 
drawn from the pads and the air, 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 of people in the 
airflow path. 
WayCool® evaporative coolers are portable and use the latest technology to provide large volumes of cool 
air, efficiently and inexpensively for cooling small to medium size areas. Simply adding more units can 
accommodate larger areas. With proper sizing and application, a WayCool® portable evaporative cooler can 
lower the effective air temperature by up to 20°. Even in high humidity, the efficiency of the WayCool® 
evaporative cooler provides effective cooling.
INTRODUCTION 










