Complete 2 System worked on Left Side of House Unit. Replaced evap coil. Pumped down system. Removed old evap coil. Removed drain line. Installed new evap coil. Replaced p trap. and made sure drain line was clear. Replaced core valves. Leak tested system. Pulled vacuum. Release ref. Still had to add 3 lbs of R22. System is running great at this time.