Symptoms
- Buzzing or humming louder than usual
- Rattling sound coming from inside or the back
- Clicking on and off repeatedly
- Vibration you can feel through the cabinet
Likely causes
- CommonUnit not levelAn unlevel fridge can vibrate against the floor or cabinet, amplifying normal compressor noise.
- CommonBottles or shelves rattlingLoose glass shelving or bottles touching each other vibrate with the compressor's normal operation.
- PossibleCondenser fan obstruction or wearDust or a failing fan motor can cause grinding or rattling sounds.
- PossibleCompressor nearing the end of its lifeAn aging compressor can develop a louder hum or buzz before eventually failing.
What to do
- Check that the unit is level using a small level tool, adjusting the feet as needed.
- Open the door and check for bottles touching each other or a loose wire shelf, repositioning as needed.
- Unplug the unit and clean any accessible fan or vent area of dust buildup.
- Listen closely to identify if the noise happens constantly or only when the compressor cycles on.
- Note how old the unit is; persistent new buzzing on an older unit can be an early sign of compressor wear.
Tools and parts
- Small level
- Vacuum with brush attachment
When to call a pro
Call an appliance technician if leveling and cleaning don't reduce the noise, especially if it sounds like grinding from the compressor area.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.