Question: how to recharge air conditioning on a car?
Answer: Introduction. First, purchase a charge kit for your car. ... 
Find the Low Side Port. Next, find the low side port of your A/C system. ... 
Attach Can of Refrigerant. Screw the dispenser hose and gauge onto the can of refrigerant. ... 
Continue Dispensing Refrigerant. ... 
Check for Minor Leaks.