i want to know if all i have to do is retrofit and recharge my compressor to fix my ac. i have no leaks or anything like that its just getting old and not blowing as cold as it used to. i found a retrofit and recharge kit at auto zone for a good price which i will buy if thats the whole process

 

that is the process, but a friend of mine said later on his o rings started to leak and had to change to newer type. Also the 134 does not blow as cold as the r12.