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| How Does an Air Conditioner Work? | It sounds rather strange, but refrigerators work just the same way as air conditioners do. Unlike a refrigerator that cools a small, insulated space, an air conditioner chills a room, an apartment and even the whole production unit.
Air conditioners work due to chemical agents, easily converted from a gas to a fluid and vice versa. This chemical is applied to transmit heat from the inside air to the outward air. 
This mechanism consists of three parts: a compressor, evaporator and condenser. As a rule, the condenser and compressor are set on the air conditioner outward part. The evaporator is usually placed on the inside of the apartment, as a part of furnace in particular. This very part is the one that heats your home.
The working liquid gets to the compressor in the form of cool, low-pressure gas where it is squeezed by the compressor. This stows the molecules of the liquid closer together. The closer they are, the higher is its temperature.
Then the working liquid runs from the compressor in the form of hot, high pressure gas and flows into the condenser. If you need the air conditioner part that is outside the house, take the part with metal fins around. They play the same role as radiator in a car, helping the heat go away or disperse faster.
When the working liquid runs from the condenser, its temperature is much lower, and a gas starts converting into a fluid under a high pressure. The fluid flows into the evaporator through a small, narrow hole. Then the fluid’s pressure falls on the other side, beginning to evaporate into a gas.
When the fluid converts into gas and evaporates, it excerpts heat from the surrounding air. The heat in the air is necessary to disunite the liquid molecules from a fluid to a gas. The evaporator also contains metal fins for the thermal energy to exchange with the air around.
When the working liquid runs from the evaporator, it is in the state of chill, low pressure gas. And then it goes back to the compressor and starts its trip from the very beginning.
Attached to the evaporator is a ventilator, which makes air inside the apartment blow across the evaporator fins. Hot air is not so heavy as cold one that is why it ascends to the top of the room.
Air conditioner sucks air through a special vent, making it go down the pipes. In the evaporator the hot air chills the gas. And when the heat is taken from the air, the air becomes chilled. Then it is blown into the apartment through the pipes, located at the level of the floor.
This process lasts over and over again till the room gains the needed temperature. The thermostat becomes
aware when the temperature has attained the necessary setting and switches the air conditioner off. When the room gets warm, it switches the air conditioner on again.
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