Diagnosing the air conditioning system requires some advanced knowledge and testing equipment. You'll want a technician with proper training and certification to work on yours.
If a leak is suspected, the technician may place a dye in the AC system and check for leaks with an ultraviolet flashlight.
How is an AC recharge done?
Most air conditioning repairs require the complete evacuation of refrigerant, using a recovery machine. Once all the parts are in place and the system is able to hold pressure, the technician will recharge the system with new refrigerant and oil.
RepairPal recommendations for AC recharges
Refrigerant is bad for environment and hazardous to people, so it should never be released into the air. Instead, a proper refrigerant recovery machine must be used.
If your vehicle hasn't yet been converted from R12 to R134a refrigerant, the best time to do this is when the air conditioning system is being serviced.
Can I do the AC recharge myself?
Recharging the AC system should be left to certified professionals, and is not a DIY job.