Photographs document heavy dust and debris in the return cavity, deposits on accessible air-handler wiring, damaged ductboard facing, and a lint-restricted roof dryer termination. Hygienic Air used protected access, mechanical agitation, and connected negative suction to loosen and collect material, then cleaned accessible components and restored the service opening. The selected photos also show lining-restoration coating across accessible plenum and supply-boot surfaces, followed by a completed plenum closure. Later views record cleaner accessible branches and an opened dryer termination. Corrosion, damaged facing, exposed insulation, and questionable sealing edges remain documented for evaluation; the coating does not replace damaged material or correct a moisture source.