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Why Is My Fridge Making a Hissing Noise?

Is your fridge making a hissing noise? Although it may sound concerning this is actually quite common.

In this post, we’ll explore the possible reasons behind the hissing sound and what you can do to address it. Let’s dive in and find out what might be causing this unusual noise from your fridge.


Why Your Refrigerator Is Hissing

The most likely reason for a hissing noise coming from your refrigerator could be the refrigerator being in defrost mode. This typically lasts for around 45 minutes and occurs every couple of days. During defrost mode, water droplets might fall onto the defrost heaters, resulting in a hissing or sizzling sound.

This is a part of the normal operation of your refrigerator and therefore nothing to worry about.

Refrigerant Circulation

You may hear a hissing noise as the refrigerant circulates through the cooling system, although this is a perfectly normal occurrence and nothing to worry about.

Water Dispenser or Icemaker Activation

If you hear a hissing noise, it’s possible that the water dispenser or icemaker is calling for water. This is a normal function of the refrigerator, as these components need water to operate properly.


If you hear a hissing noise from your refrigerator, it’s important to monitor the temperature of the freezer over the next few hours. If it begins to warm up rapidly, it could indicate a potential freon leak. In this case, it’s advisable to contact a technician to address the issue.

Overall, if the noise is associated with the water dispenser, icemaker, or defrost mode, it’s likely nothing to worry about.

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