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Central Air Conditioner
Axle, Roller, Shaft, Wheel
Axle Arm
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What is a model number, and where do I find it?

How does a window air conditioner work?

Window air conditioners work on exactly the same principles as a refrigerator or dehumidifier. They have a cooling system that refrigerates the air entering the unit and then expels the heat from the back of the air conditioner.