Noisy dehumidifier

Loose, vibrating parts cause most noises.

1) Disconnect the power.

2) Remove the cover and look for loose screws or vibrating parts and check to see if the rubber compressor mounts have hardened so that they no longer absorb the unit's movement. If they have, replace them.

3) Wiggle the fan to see if it is loose on its shaft. If it is, tighten the mounting fasteners. Lubricate the motor's bearings if suggested by your owner's manual.

4) If it still makes noise, call an appliance repairperson or take the unit into an appliance repair shop.