Mobile air conditioning units work by taking heat from a room, expelling it to the outside. Air inside the room is chilled and recirculated. There are two main types of mobile, single units and split systems. Single units are instantly recognised by their exhaust hose which is used to expel the hot and damp air to the outside. Single units can cope with a wide range of standard room requirements and are particularly suitable for small offices and in the home.

The Airfel AS09 portable air conditioner, or mobile air conditioner, is a versatile air conditioning unit that will cool in hot weather, heat in cold weather or dry in damp weather. This powerful triple purpose air conditioning unit will cool at 9000 BTU's or heat up with 1.6KW of power. The AS09 can be operated manually or via the remote control supplied, making it very easy to use. Many domestic air conditioners, such as a split air conditioner can be complicated to install, but the AS09 portable simply plugs in to a 13 Amp socket and can be moved on its casters from room to room. The Airfel AS09 is not only a domestic air conditioner but can be used in most offices too. It comes complete with an extending hose and a window adaptor kit.