Technical directory · Ducts
Supply register cleaning
A room's supply grille can be dusty even when the deeper supply duct does not need professional cleaning.
What to observe
Remove or inspect the visible grille and look for actual debris blowing out during operation.
A field example
Debris collected on the grille can often be removed as accessible housekeeping. If material emerges when the blower starts, identify that outlet and its branch before purchasing a whole-house package.
What the written work should say
Clarify whether the quote covers the grille, nearby boot, branch duct or complete supply system; photograph before and after.
Where this task stops
A clean-looking grille is not proof that remote duct runs were cleaned.