Air Conditionee

there's probably a leak and if you get the can from autozoo it will also leak out , the best thing you can do is bring it to a pro , if it's a slow leak they can fill the system and you'll be good for a while if it leaks out it's probably the condenser and thats about $400** The A/C/ parts are designed to work together , the pressure and weight of the freon should be correct for it all to work properly

I have always said that any A/C work is best left to the professional A/C specialist. If it needs refrigerant then it has a leak somewhere. In order to operate correctly the correct amount of compressor oil and refrigerant must be used.