How air conditioners take hot and humid air, and make it drier and cold.
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If you’ve ever used an air duster can or any type of aerosol can, the can turns cold when you use it. In short simple terms, when you expand a gas (all else equal), you decrease the temperature, when you compress a gas (all else equal), you increase the temperature. Air conditioners play with this concept to move energy around.
They compress a gas outside in pipes to increase its temperature above the temperature of what it is outside. Fans cool the gas to the outside temperature. Then, they bring that gas expand it which brings it to below freezing. Fans then blow hot air from your house onto these freezing pipes which condenses any water in the air and cools the air. The cool air is now blown into your house.
What is required to keep this process going is energy. This is why air conditioners use so much electricity
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