Upon inspection, the furnace was found to be in excellent condition. I began by checking the thermostat settings and ensuring they were correctly configured for optimal performance. Next, I examined the air filters, replacing them with high-quality ones to ensure efficient airflow. I then inspected the burners and heat exchanger for any signs of wear or damage, finding none. Lubricating the moving parts and cleaning the blower assembly helped maintain peak efficiency. Finally, I tested the furnace's operation, confirming that it was running smoothly and quietly. With all components in perfect working order, the furnace is now ready to provide reliable heating for the upcoming season.