The evaporative cooling system does not use refrigerants they compressors. It provides fresh water evaporation combining with the movement of air through an evaporative designed specifically. L 'water in the tank, A pump, through the cellulose panel allowing all 'air to cool off. Evaporative method is the environmentally friendly alternative to traditional air conditioners. This method consumes up to ' 80% less energy and requires a lower initial investment, lower installation and maintenance costs. The evaporative coolers increase air circulation and exchange of fresh air by eliminating the risk of building syndrome "sick" (SBS). The cellulose panel works as a real filter that removes particles like dust, pollen and other contaminants.