Customer has 2 y/o Rheem system matched with 8 y/o Amana AC that operates for upper level. Performed inspection and found that media filter was dirty. Noticed rust at bottom of evaporator coil, however, no refrigerant leak was detected. Safeties are good. Drain line is clear. Pressure levels were normal. Condenser electrical components are good. Performed condenser coil cleaning. Informed customer of all findings. System is currently working.