Performed the level 2 furnace and fireplace cleaning. Furnace: Burners and flame sensor are clean. Heat exchanger is rusting, but no cracks located at this time. Combustion readings were normal. No CO detected in the air. Drain is clear. High limit passed the safety check. Heat rise was 41°. Fireplace: I wiped away any dust in the upper and lower compartments. Logs, ignition, and glass are clean. New embers were put in. All equipment is operating properly.