What is Swamp cooler?
[[File:Evaporative cooler, CO, IMG 5681.JPG|thumb|Swamp cooler hanging on the side of a building]] '''Swamp coolers''' are simple type of [[air conditioning]] device that can cool a room of a house or a car by using the cooling effect of the [[evaporation]] of water. This is known as evaporative cooling. Swamp coolers can cool the air temperature in a small space by drawing the air through wet [[pads]] (some are made of aspen wood) using an electric fan. Swamp coolers work best in dry climates such as the [[American Southwest]] and the American South. They are usually much cheaper to buy and operate than refrigerated air-conditioning devices. This type of air conditioner was first used thousands of years ago in ancient Egypt. [[Category:Home appliances]] [[Category:HVAC]] {{stub}} {{HVAC}} {{Home appliances}}