Complete 3 system a/c repair and preventative maintenance check. and new comfort club membership. Replaced filters, clean dirty condenser coil. #1 system low on Freon, rusty evaporator coil and mold inside air box, burnt main switch. Replaced main switch, installed compressor saver and added 3 lbs of Freon. #2 system has starter on boarder line weak, owner wants to wait on repairs. Found mold inside air box aswell. Upstair system is good. 3 system had dirty blower wheel, very dirty for #1&2 system. All 3 system cooling at this time