How do I add freon to my ac compressor? - Air Tools & Compressors

Unless you are licensed to handle freon don't. there are some big fines for releasing freon. also if you are not experienced there are safety concerns!!! Is this a home hvac or car? Now with that said you have to add it on the suction side of the compressor.You will need to know the correct type of freon that goes in your unit which can be found on a tag on the unit. You will also need a set of ref. gages to monitor the low and high pressure sides of the unit. it also needs to be added to the outside unit service ports (Home). You need a set of ref scales so you know how much ref is being added. Too much ref and you start pumping liquid. Too little ref and it doesn't cool like it should. If its a car you still need the above equipment. still goes in the suction side.If you add to much ref you can lift the safety pressure valve and dump the freon in the car system. Each type of ref has a pressure you want to see on the suction side and hp side. since they differ with each type ref. you will have to look it up possibly on the internet. If suction pressure goes below 32 degrees you may freeze any condensate the unit makes and have another problem. Hope this helps you but its not as simple as hooking up a ref cylinder and just adding freon. their are many thing that can go wrong and damage equipment or hurt yourself.safety is the first priority.