It is the most commonly used air conditioner for single rooms. In this air conditioner all thecomponents, namely the compressor, condenser, expansion valve or coil, evaporator and cooling coil are enclosed in a single box. This unit is fitted in a slot made in the wall of the room, or often a window sill.
Window air conditioner comprises of the rigid base on which all the parts of the windowair conditioner are assembled.
The base is assembled inside the casing which is fitted into the wall or the window of the room in which the air conditioner is fitted.
The whole assembly of the window air conditioner can be divided into two compartments: the room side, which is the cooling side and the outdoor side from where the heat is absorbed by the room air is liberated to the atmosphere.
The room side and outdoor side are separated from each other by an insulated partition enclosed inside the window air conditioner assembly
The various parts of the window air conditioner can be divided into following categories: (i) the refrigeration system, (ii) air circulation system, (iii) ventilation system, (iv) control system, and (v) the electrical protection system. All these have been discussed in details below along with the front panel and other parts.
conditioner is fitted. 
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