I conducted a comprehensive maintenance check on the Lennox HVAC system, ensuring optimal performance and longevity. This included inspecting and cleaning the air filters, checking the refrigerant levels, lubricating moving parts, and testing the thermostat functionality. I also examined the electrical connections and components for any signs of wear or damage. Additionally, I performed a thorough cleaning of the condenser coils and inspected the drainage system to prevent future water accumulation issues. The system was tested for proper airflow and temperature regulation, ensuring the comfort and efficiency of the home.