I performed maintenance on a Trane XR16 central air conditioning system in Cary. The outdoor condensing unit had accumulated a heavy buildup of dirt and debris, restricting airflow and impacting efficiency. I meticulously cleaned the condenser coils utilizing a foaming coil cleaner solution and soft-bristled brush. Additionally, I swapped out the interior air handler filter with a new pleated replacement. After servicing, the system is now running at optimal levels, delivering enhanced cooling performance and comfort for the residents.