Performed preferred customer air conditioning cleaning. Checked indoor coil for leaks. Found a refrigerant leak in the indoor coil. Unit is low on r22. Customer was concerned about water dripping from the return ductwork. Found that the return ductwork was full of water up to the filter rack. Drained out water. Checked the electrical. The electrical is worn in the unit. Air conditioner is running at this time. Recommend a second opinnion with Dan. Office to call to schedule the appointment.