There are different types of refrigerant gas cylinders used today, but they all generally work the same way. The refrigerant moves between the indoor and outdoor units of your A/C and transitions between its liquid and gas states. This allows it to absorb heat from the surrounding indoor air and carry it out, returning with freshly cold air in its place. In compression systems, a pressurizer and condenser are used to cause the vapor to liquefy as needed.
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