Home / Home / How loud is the SilentBot S1 on hard floors?Home robot vacuum cleaningHow loud is the SilentBot S1 on hard floors?It operates at 48 dB on hard floors, about as loud as a quiet library or a refrigerator hum. Solidly in the “won’t disturb anyone” zone, but unremarkable for a vacuum with “Silent” right in the name. Search Amazon As an Amazon Associate I earn from qualifying purchases.Related NotesExploreExploreExplorePrevious How many M.2 slots does the HP EliteDesk 800 G9 Mini have, and what are they for?Next How long does the Eufy robot vacuum actually run on hardwood with mopping?