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An air cooler is any device for cooling the air inside a building, room, or vehicle. . Air coolers are used in thermally insulated casings to form refrigerators and are also used in buildings to cool rooms. In buildings they are only required when the building itself is not constructed so that it is able to dissipate enough heat. Methods to construct buildings in such a fashion that additional air coolers are not required are eg Earth sheltering or specific building designs .
Several devices exist, these include:
- Wet air coolers
- Dry air coolers
- Absorption air coolers
- Deep water source cooling system
- Ground-coupled heat exchanger
- Air and water-coupled heat pumps
Coolers outfitted with extras as heating,and dehumidifying are called Air conditioners.