What is an Air Conditioning Recharge?
Let’s put it in simpler terms, because “recharge” isn’t very accurate. An air conditioning (A/C) recharge is really just a refilling of the A/C’s refrigerant.
The A/C system uses refrigerant as a heat transfer, which allows the A/C air to actually be cold. You probably don’t need to be told that that’s a good thing.
The system is closed, which means that no refrigerant should be lost. But occasionally, it can get very minor leaks, resulting in a slow loss of refrigerant, and a recharge is necessary. The most common time for a recharge, however, is when the A/C system is being repaired. Anytime it’s opened up for repairs, the refrigerant must be recovered. Then, the system is evacuated for air and moisture, and a recharge is performed.