Performed the AC cool check. Checked electrical, mechanical, safety, and performance of the system. Condenser fan motor showed signs of overheating. Mold/mildew was growing inside the air handler and on the wiring harness for the blower motor. Options for repair were presented to customer and they chose to have the condenser fan motor replaced. Repair was completed. Electrical disconnect confirmed in and on. System was running at the time of departure.