Question: how to replace air conditioner refrigerant?
Answer: Step 1 - Check the System. Stop the compressor and check the refrigerant in the system.
Step 2 - Get Materials. ... 
Step 3 - Connect Hose. ... 
Step 4 - Move Cover. ... 
Step 5 - Throttle. ... 
Step 6 - Close Regulator. ... 
Step 1 - Check System. ... 
Step 2 - Connect Cylinder.