An air conditioning regas (also known as an AC recharge) is the process of refilling the refrigerant gas in an air conditioning system. Air conditioning systems use refrigerant to cool the air that circulates in a building or vehicle. Over time, the refrigerant can leak out or become depleted, causing the air conditioning system to malfunction or blow warm air instead of cold.

During an air conditioning regas, a qualified technician will use specialized equipment to remove any remaining refrigerant gas from the system and then refill it with fresh refrigerant. The technician will also check for any leaks or other issues that could cause the refrigerant to escape again.

It's important to note that only licensed professionals should carry out air conditioning regas. Attempting to regas your air conditioning system yourself without proper training or equipment can be dangerous and may damage the system.