AC performance tuneup times two systems. Supply and change out 116Ã—25 times for filter. Also 120Ã—25 times for filter inspect mowers, evaporators and ductwork. Checked thermostat for proper operations. Verified primary drains are clear at this time. Check outdoor units. Refrigerant levels good in both units. System on the east side of the home is 17 years old. Recommendation is to change out. Wash both condenser coilâ€˜s. Checked all capacitors and contactors. System is cooling properly at this time.