I was installing a shelf bracket in a closet and screwed into what I thought was a stud until it started hissing at me. I quickly cut in through the sheetrock and discovered I'd punctured the copper tubing on my a/c unit. I bought a compression connector and thought I'd cut the tubing and reconnect the two ends. The other method I have considered is to solder a sleeve over the hole.
Questions: Which is better to use -- compression connector or soldered sleeve?
How do I turn off the flow of the freon so I don't loose it all out of the entire system? I see a nut type thing at the base of the outside unit. Should I turn that off and is there something similar up in the unit in the attic?
Lastly, can I recharge the unit myself or do I have to call in an A/C person?