Initial photographs document heavy loose dust and debris in flexible branches and the lined return cavity, along with deposits at accessible air-handler and blower components. Hygienic Air opened the system, used truck-mounted negative suction, and mechanically agitated accessible duct runs so dislodged material could be drawn toward collection. The selected sequence includes protected setup, source-removal work, blower cleaning, cleaner accessible duct sections, and the blower reinstalled in the air handler. Persistent staining and corrosion remain visible. A separated branch connection with torn ductboard and exposed fiberglass is documented without a completed repair, and final cabinet closure is not pictured.