An Air conditioner uses refrigerant to remove heat and moisture. They use a fan to distribute the conditioned air to both improved comfort and indoor air quality. Air is cooled in coils by chemical means. Air conditioners work best in a fully closed environment and can reduce environment temperature. Evaporative air cooler requires only a few materials to operate only water & electricity. Coolers require less maintenance than air conditioners. The air conditioner unit does have a higher energy consumption over evaporative air coolers. An air conditioner circulates the internal air of the room over and over, whereas an evaporative air cooler pulls fresh air from outside and then cools it down.

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