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How does your air conditioner manage this? In a similar way to how your refrigerator manages to stays cold, but minus the insulated box. A nonflammable gas, known as Freon, undergoes an evaporation process again and again within most refrigerators in order to keep the temperature low. The same cycle is used for air conditioners. This is how it works: First, a compressor in your air conditioner compresses cold Freon gas. A small amount of oil is combined with the Freon gas to lubricate the compressor. When the Freon gas is compressed, its pressure rises, making it very hot.
Rating Newest Oldest. Best Answer: you need to have the refrigerant installed by a shop, or learn how to vacuum the system, how much ester oil to put in, and when enough is enough with the freon. worked on a/c's for awhile and they make it easy now, but if you want it cold, got to have the right tools, vacuum pump, guages, a fan or a light water sprayer to cool the evaporator core when it's hot and idling and putting the freon in.