Performed 1 system diagnostic for system that is zoned for main and upstairs. Found rusted evap coil, R22 unit, unit is 21 years old, dirty blower wheel, disconnect is broken and melted. Unit is off due to melted disconnect, contactor is pitted compressor is operational however refrigerant is burnt out from the compressor. Due to age of unit and type of failures recommend replacement of full zoned system. Based on our findings today, it might be time to think about getting a brand new system.