I performed a furnace tune-up on a Rheem Classic Series furnace in Murray, UT. I inspected the burner assembly, cleaned the flame sensor, and checked the heat exchanger for cracks. The air filter was replaced, and the blower motor was lubricated. I also tested the thermostat for accurate calibration and inspected all electrical connections. After ensuring proper gas pressure and airflow, I ran a full heating cycle. The system is now operating efficiently, ready to provide consistent heat throughout the winter months.