Masterkool iKOOL-50, the innovative mobile air cooling solution in a sleek, compact design. Also known as Swamp Coolers or Spot Coolers, Masterkool Air Coolers simply use the process of evaporation to create a cool environment, without the need for an expensive air conditioning system. They are simple to use, portable and cheap to run. *Not to be confused with an air conditioner, an evaporative air cooler is a fan that also benefits from additional humidifier and cooling functions. Using the humidifying function an air cooler will use cold water vapour from the water tank to reduce heat in the air which is flowing through the unit, whilst in cooling mode the addition of ice packs can help to produce even cooler air.  Air coolers require a constant flow of air from an open window/door to efficiently work.