The air conditioner is a device that has the ability to cool or heat a room or space. This device outputs hot or cold air and is called climate control . Improved devices include extra features such 
as auto adjustment of the room temperature, automatic shut down, and much more
The ability of the device to make the cooler or warmer is based on the principle of gas compression There are a few types of air conditioners
Window airconditioner
In this type all the devices are under the same casing. This airconditioner type is relatively low power, because of the place limitation,
it's parts are small and less effective. However one of the positive things thing about this air conditioner type is that it is very easy to install, and you can install it by just putting it in the window and surrounding the remaining space with a window. It is ideal for a bedroom or other small room
Split airconditioner
In this type the devices are divided into two casings. One casing is for the cold side and the other casing is for the hot side. The cold side contains the air conditioner controls, and the ventilator. The hot side contains the compressor and the extra ventilator
Between the two casings there is a pipe (where the cold and the hot gas pass thru), electric cable, and a drainage pipe. This air conditioner type can be very powerful and the extra plus is that the main noise maker is located outside the building
You can find this air conditioner type in a large spaces and areas such as malls, and offices buildings, It works very well for climate control
Water cooling system
This air conditioner type is used when there is a need to move cold gas long distances between the compressor to the cold part. In this case a regular split air conditioner loses its efficiency, so it is highly recommended to use a water cooling system to cool the water to a low temperature by gas, and then moving the water thru the pipe to long distances.
A cooling tower
This air conditioner is more efficient in the process of heat despersing. This is used in places where the compressor is a long distance from the area that should be cooled. The water is cooled and sent via pipes to the designated are that is to be cooled and then ventilators are used to cool the pipes. This system is energy saving but uses much more water
Portable / mobaile Airconditioner
This type of airconditioner is ideal for those who live in rented apartments as it is not connected to any walls and can be moved from room to room or building to building
The motor is placed in a garden or balcony and the airconditioner itself mobile with wheels to enable easy movement. The motor and the airconditioner is connected by a pipe 2.5 Meters long. This airconditioner gives power of 9000 btu, and is suitable for small rooms
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