Before: Heavy dust coated the blower wheel and return cavity. Deposits on the air-handler lining were documented during assessment. Process: Hygienic Air removed the blower for component access, cleaned the HVAC air path, and connected vacuum-truck collection for negative suction. Temporary supply covers helped protect the home and concentrate suction. After: Photos show the cleaned blower wheel, exposed return-cavity surfaces, and reinstalled blower assembly. We also serviced the roof dryer exhaust and documented removed lint. Existing staining and material discoloration remain visible separately from loose buildup.