Performed cooling maintenance on a Trane AC system Replaced AA batteries in the thermostat Replaced 16x25x1 filter with a customer-provided one Blower is clean Drain is clear Closed fresh air damper to take some load off the AC Washed outdoor unit Capacitor in spec No damage to wiring Refrigerant charge is correct: 11⁰ of liquid line subcooling No concerns found on today's visit