I just completed a comprehensive maintenance service on a Rheem RA17 air conditioning system for a client in Holly Springs, NC. First, I performed a detailed inspection of the evaporator coil, thoroughly cleaning it to optimize heat transfer and airflow. Next, I tested and recalibrated the digital thermostat to ensure accurate temperature measurement and control. Finally, I lubricated all moving parts in the indoor and outdoor units to reduce friction and wear, extending the overall lifespan of the system components. The AC is now operating at peak performance and efficiency.