Air Conditioning System
An air conditioner is a machine, appliance, or system intended to remove heat from an area and reduce humidity, or supply heat to an area. The humidity and temperature of the air can be stabilised with an air conditioner. Air conditioning is the process of cooling, heating, and dehumidifying indoor air for comport. An air conditioning system is designed to provide comfort to the driver or the passengers in a vehicle during hot, humid and uncomfortable weather. Usually, people from warm climates have an air conditioning system fitted in their car. However, the use of an air conditioning system in a car has been controversial because of its effect on the efficiency of fuel in a vehicle.

Air conditioning equipment :
* Window and through-wall units : There are two forms of room air conditioners, namely, unitary system and PTAC (Packaged terminal air conditioner) system. Unitary systems use window units with internal controls while PTAC systems use through-wall units where the evaporative unit is on the outside and the condensing unit is on the inside, with tubes connecting them by passing through the wall.
* Evaporative coolers : An evaporative cooler is a machine that draws air from the outside with the help of a wet pad such as a water soaked sponge, thus, reducing the sensible heat of the air coming in. This form of air conditioning equipment is popular in very dry climates.
* Portable air conditioners : Portable air conditioners are transportable units that are used for cooling specific rooms in a house and where permanent installation is not required. Some units of portable air conditioners include single hosed units, dual hosed units, split units, and heat and cool units.
* Central air conditioning : The central air conditioning system is an air conditioning system which distributes cool, dehumidified air to multiple rooms with the help of ducts. It also distributes chilled water to heat exchangers in multiple rooms without being plugged into a typical electrical outlet.

Most air conditioning service includes design, preventative maintenance, workshop repairs, installation, electrical service, refrigerant reclamation, ventilation, replacement, and rental of portable air conditioners.

The three main air conditioning parts are the compressor, the condenser and the evaporator. The machine has three main parts. They are a compressor, a condenser and an evaporator. The location of the compressor and the condenser is generally outside the house while the evaporator is located inside the house.