I came back out for a not cooling well. We have recently done her AC maintenance. I checked the system over and found it low on refrigerant. I performed a complimentary leak search and found the evaporator coil leaking. The air handler is very old and they dint make replacement coils for it. I sold a 3t downflow AH only w/10kw heat. I will have to office call Monday to schedule the install. I added 2lbs or r22 to get her by until we can completed the install.