FJC Inc

The next time you buy some refrigerant, be sure to check the expiration date on the can or cylinder. What? You can't find one? That's because refrigerant simply does not go bad or expire. Automotive air conditioning systems are self-contained structures which cool the cabin of a vehicle by changing the phase of refrigerant from gas to liquid and back again by applying and releasing pressure on it.

A/C systems operate by utilizing a compressor which pumps and circulates refrigerant and oil through the system, producing cold air through the phase of matter changes of refrigerant.