HVAC, whether in homes, offices or vehicles, its purpose is to provide comfort by altering the properties of the air, usually by cooling the air inside.
The main function of air conditioner is to change adverse temperature Air conditioners often use a fan to distribute the conditioned air to an occupied space such as a building or a car to improve thermal comfort and indoor air quality.
Electric refrigerant based AC units range from small units that can cool a small bedroom, which can be carried by a single adult, to massive units installed on the roof of office towers that can cool an entire building. The cooling is typically achieved through a refrigeration cycle, but sometimes evaporation or free cooling is used. Air conditioning systems can also be made based on desiccants (chemicals which remove moisture from the air). Some AC systems reject or store heat in subterranean pipes. Note: The term “Air Conditioning” refers to any form of “Heating, ventilation and air-conditioning”. This article deals specially with units used as part of a cooling system. An air conditioner is a system or a machine that treats air in a defined usually enclosed area via
a refrigeration cycle in which warm air is removed and replaced with cooler air. In construction, a complete system of heating and ventilation.