Performed AC maintenance on a pair of AC pro systems. Temperature split on both systems are in range at 20 degrees. Customer reports bad airflow into the office. Duct run is around 30 feet. Room is on the hot side of the house and is filled with computer equipment. Recommended adding a return. Found a hole in that specific duct run that was repaired today. Indoor electrical amp draws are in range. Outdoor coils were heavily caked in dirt and pollen, they were chemically washed today. Compressor bay and service panel was cleaned off. Start components are in range at this time. Compressor and fan amp draws are reading in range. Filters were dirty and changed today with customer provided filters. Gave a full tutorial to the homeowner on the nest thermostat as well as the app, customer still reports not feeling comfortable with the nest. Homeowners are aware of the importance of maintenance but feel the price is too high. Both systems were running st end of appointment.