10 causes of strange noises from the fridge

A fridge that is running makes noises all the time. Sometimes they sound like hissing or gurgling noises. Often you can hear a soft rumble or humming noise coming from inside the fridge. But how do you know which ones are normal and which ones are not? Let’s get things sorted out in order.


This manual is suitable for all manufacturers of home appliances, be it Samsung, Bosch, or Lg.

To begin with, any working refrigerator will make various noises from time to time. This is due to the principle of operation.


Varieties of noises


Sometimes you may hear suspicious loud noises coming from the fridge that you haven’t heard before. These noises can originate from different modules. The key is to realize that this noise is due to a malfunction and not to the stable operation of the appliance.



These sounds can be considered standard if they are heard from the beginning of the refrigerator’s operation. They are often made when the thermostat is switched off and on or after a freezing cycle. Cracks and clicks are made of plastic and sometimes metal parts of the cabinet.


However, these noises can also be an indication of damage to the appliance:


When the thermostat is defective. The relay can be heard clicking, but the compressor does not start.

Compressor malfunction. A short click is followed by the start of the motor, which immediately stops. Light in the chambers illuminates.

Blown starter relay. Repeated clicking noise when completely silent. Motor fails to start, lights on.

Sometimes the clicking noise occurs when the motor stops. In this case, the problem could come from the compressor mounts. They develop and the motor hits the walls against the refrigerator body.

Another cause of the clicking noise is a power surge. These cause the circuit breaker to trip and the overload relay may activate. It will make a noise.



A gurgling noise is generally an indication that the refrigerator is operating correctly. However, if the compressor is silent, it is likely that there is a breakdown in the freon tube of the appliance. Therefore it is possible to hear the air with the rest of the refrigerant gurgling; sometimes the process is accompanied by a soft popping and crackling.



A grinding and squeaking noise is typical of models with the “No Frost” function. In this case, a defrost failure occurs. Frost builds up inside the appliance. The built-in fan clings to the ice edges with its blades and a characteristic rattling noise occurs.


Rattling and ringing

The most common cause of strange noises is badly tightened bolts fixing the parts inside the refrigerator case. The rattling, ringing, crackling, crunching, and banging can be both the compressor and various plastic parts. You can try leveling the appliance to eliminate the rattling noise. The rattling noise can be caused by the appliance twisting or being close to other furniture.



If the motor stops on loose mountings and shock absorbers, you may hear a single or bursting knocking noise. It is caused by the motor repeatedly hitting the walls of the refrigerator.


Useful tips that can really help you deal with noise.


Position your refrigerator so that it is level

Do not lean it against a wall or place it against furniture or other interior fittings.

Remove the transport screws after purchasing and unpacking.

Diagnose at the first sign of malfunction. (icing on, unclear operation of the compressor).

And most importantly, do not put off calling a technician if your refrigerator starts making strange noises.


The refrigerator in working condition makes different sounds. The main thing is to be able to distinguish a “useful hum” from the first signs of a breakdown. If you start making strange noises, it is best to contact an experienced appliance repair service in San Diego County. He or she should perform a thorough diagnosis that will uncover the true nature of the noise that has occurred.


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