Complete cooling prepaid maintenance for carrier 28 year old system in Decatur. Replace filter in attic, check drain and operations. Find 28 year old system operating with badly rusted evaporator and no water safety and missing inline water sensor. Find blower assembly dirty and not balanced. Find air conditioning unit operating with high head pressure and very hot, worn compressor. Find system operating wi weak capacitor and overheated terminals, worn/pitted contactor and system coil very dirty. Clean dirty coil and part of CCI plan. Due to system age and poor conditions, suggest to replace equipment and not repair. System operating but not reliable and not efficiency.