Air coolers use water evaporation to cool
the air. They operate by forcing hot, dry air through a cooling pad or
water-soaked filter. Cooler air is blown out as a result of the water
evaporating and absorbing the heat when the air travels through the pad. Evaporative
coolers, swamp coolers, and desert coolers are further names for air coolers.
They are employed in hot, dry climates where they can replace air conditioning
more effectively in terms of energy use. Since they don't use compressors or
refrigerants like air conditioners do, they may be more environmentally