My Frigidaire Freezer Has High-Pitched Noises

Frigidaire makes and sells refrigerator-freezers as well as standalone freezers for consumer use at home. If you have one of these appliances, you may hear Frigidaire freezer noises from time to time. A Frigidaire freezer whistling sound may be caused by something you can fix, or it may be part of normal operation. A little troubleshooting may help you determine the source of the noises.

When the freezer is on and the compressor is running, you can hear a high-pitched noise. This is because the compressor is heavy duty and works hard to keep the large capacity of the freezer cool. The noise is a result of the compressor cooling the freezer and is normal. You cannot do anything about this noise.

At the start of the "On" cycle, the pressures the freezer operates at are higher. As a result, you can hear a high-pitched noise coming from the compressor. While it is a normal sound, it is also just a temporary one. As the freezer continues to run, the sound can disappear completely or lower considerably.

After closing the door of the freezer, you may hear a high-pitched whooshing type of noise. If you hear the freezer making loud humming noises when you close the door, it is a result of the freezer sealing the connection between the door and the unit while trying to equalize the inside pressure. You cannot do anything about this normal noise.

If your freezer is not sitting level, it can cause a high-pitched noise as it vibrates in place or up against something, particularly metal. You can adjust the freezer so that it is level. The four legs on the bottom of it are adjustable. Turn each leg to the right to lower or to the left to raise that leg. You may need someone to help you lift up the freezer so that you can access the legs.

As the freezer cools, you can sometime hear a popping or cracking noise that is high pitched. The noise is a result of the freezer walls expanding and contracting while cooling. This noise is most common when the freezer is first installed as well as when a large amount of items are added to the freezer. You can also hear it if you have had the door open for a prolonged period of time before shutting it. The noise is normal but does not last long.

When refrigerant coolant flows through the capillary tubes, some of it may evaporate and cause a high-pitched noise. You'll need a service/repair expert to help with this, because your appliance may need more refrigerant, or you may need a new filter-drier tube.

A filter-drier filters the refrigerant as it flows through the closed cooling system. During this filtration process, the filter-drier can become clogged with debris from the refrigerant. If you don't replace the filter-drier, you'll not only continue to hear a high-pitched noise but you may also have a secondary problem — partially frozen evaporator coils.