I conducted a comprehensive maintenance check on the Trane HVAC system, ensuring optimal performance and longevity. This included inspecting and cleaning the air filters, checking the refrigerant levels, and lubricating the motor bearings. I also examined the thermostat settings and calibrated them for energy efficiency. Additionally, I tested the system's electrical components and inspected the ductwork for any leaks or obstructions. The maintenance concluded with a thorough cleaning of the condenser unit and a final performance test to confirm the system was running efficiently.