How Does a Window Air Conditioner Work?

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How Does a Window Air Conditioner Work?

Air conditioning systems have become much more popular in recent years for cooling buildings over swamp coolers. Air conditioning in Denver consists of either window air conditioners or a central air system. Both methods of air conditioning work similarly, with window air conditioners simply employing a smaller scale of cool air delivery. Here’s how window air conditioners work.

Function of Air Conditioners

You may think that the obvious function of an air conditioner is to put cold air into the house. However, the real purpose of an air conditioner is to regulate the humidity in the air in order to draw heat out of the air and cool it down.


The compressor in the air conditioner condenses a liquid refrigerant to a gas in order to produce excess heat. The refrigerant is then pumped through a series of coils to draw the heat out. Once through the coils, the refrigerant enters an evaporator and the liquid is vaporized. This allows moisture and heat to be removed and passed outside. The gas cools, changes back to a liquid, and the process begins again in the compressor.

Cold Air Delivery

Air conditioners contain 2 important fans to make cold air delivery possible. One fan moves the hot air outside and the other blows the air over the cool coils so that cold air is sent into the room. Along with these fans, there is a filter that removes particles before they enter your home to keep contaminants out and to protect the components of the air conditioner.

Temperature Control

A central air unit shares a thermostat in the home with the heating system to help control the temperature. A window air conditioning unit has its own thermostat to regulate how much to cool the air. In order to cool an entire room using a window unit, you’ll have to make sure the unit is powerful enough for the size of the room to be effective.