Inventor humidifier makes high-pitched whining or buzzing noise

Safety: Unplug the unit before inspection.

• Change placement: Move the humidifier to a different, more solid surface (e.g., from a hollow table to a solid shelf) and place a soft mat underneath.
• Clean fan: Access and clean the small fan used to blow mist. Remove dust from blades.
• Check fan bearings: If the noise clearly comes from the fan and persists, replace the mist fan motor.
• Secure components: Tighten any loose screws or panels that may vibrate.