Hi, I have 15 year old WF unit that developed an air coil leak around 6 years ago ( I had 5yr warranty). I found the leak with soap water and thought I would fix epoxy puddy with rubber hose and hose clamp. Actually I would lose about 1 lb Freon a year so I just paid for recharge R22. It never discharged and always had positive pressure until last charge I let a guy put the fix a flat in it. 2 weeks later air coil blew bad total discharge. I wonder now do I fix for $2k or replace would like opinions. I guess I worry about compressor at 15 years.