I completed a routine furnace maintenance for a homeowner preparing for the colder months. I inspected the heat exchanger for cracks, cleaned the burner assembly, and tested the ignition system for proper functionality. Additionally, I checked the blower motor for efficient airflow and replaced the air filter to ensure the system operates efficiently. After recalibrating the thermostat, I tested the system to confirm that it was heating the home properly. The furnace is now ready for the winter season.