Dehumidifier makes loud rattling or vibrating noises during operation

Safety: Unplug before tightening or adjusting internal parts.

Steps:

• 1. Level the unit: Place the dehumidifier on a flat, solid surface. Adjust feet if available.
• 2. Check external objects: Ensure the unit is not touching walls or furniture that can resonate.
• 3. Inspect fan wheel: Remove the front or rear cover and check that the fan wheel is firmly attached to the motor shaft. Tighten the set screw if present.
• 4. Clean fan blades: Remove heavy dust buildup that can unbalance the fan.
• 5. Check compressor mounts: Inspect rubber grommets under the compressor. Replace if cracked or missing.