Determine whether cleaning is warranted
Dust on a grille does not by itself establish that the full duct system needs cleaning. Inspection can look for debris within accessible runs and identify the areas that are actually affected. The reason for the request, visible conditions, and system layout help define a suitable scope. Cleaning should not be presented as a guaranteed way to change indoor air quality or system performance; the decision rests on observed conditions and the homeowner’s specific concern.
