Portable Swamp Cooler is a natural way of cooling, you never feel hot and dry in summer. it cools the air by means of the evaporator of water, water evaporates and absorbs the heating from air (drops the temperature) at the same time provided cooling effect. When used air cooler, it shouldn’t be used in an enclosed space, all doors and windows open to allow the fresh air flow to have the maximum cooling effect. With casters, it is easy to be moved and fixed.