Evaporative cooler

An evaporative cooler draws hot, dry air through water or a saturated material and blows the cooled air out into an area. These are also known as “swamp coolers” but also called evaporative air conditioners, desert coolers, wet air coolers and even swamp boxes. An evaporative cooler may also take hot air in and use ice to cool air down and then push it back out to circulate through a room.