What does electricity do to remove heat from air?
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There’s a compressor in the a/c unit. Air from the room is compressed, which takes all the heat in a volume of air and concentrates it. Then that hot air is cycled through a coil on the outside portion of the unit, and outside air is blown over it with a fan, which takes a lot of that heat away (this is why the a/c unit blows hot air on the outside). Then, that compressed air is fed through a little orifice, where it’s allowed to expand very quickly, which causes it to get very cold. That goes through another coil on the inside part of the unit, and inside air is blown over it, which heats up the coil and cools off the air. This causes cooled air to blow into the room, and it causes that air in the coil to get warm. Then it’s compressed and fed outside again… rinse and repeat.
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