Tech was out today due to system is continuing to run. Customer stated that she had some one come out and add Freon to system due to low on charge Checked system out and seen the following. Evaporator coil is completely rusted , drain pan is completely rusted. There is no safety switches on the evaporator coil no wet switch in the drain pan. Drain pen is completely rusted. Heat exchanger, completely rusted tech is unable to identify any cracks in the heat exchanger due to excessive rust. Drain line needs to be cleared. Blower wheel is needing a cleaning. On outdoor unit compressor is over and start up and also making loud noise when shutting off. Compressor is mechanically failing. Contactor is needing me to replace her star is need to be added to the system. Capacitor is bad needs to be replaced. Condenser is needing a chemical cleaning. System is overcharged, causing compressor to also overheat. System is R 22 due to multiple issues and the type of refrigerant. There is no repair ava