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Refrigerators are never completely silent — they hum, click, gurgle, and occasionally drip. Most of those sounds are completely normal and just part of how the appliance works. But some noises are worth paying attention to, because they’re early warnings of a problem that’s easier and less expensive to fix before it develops further.
After years of repairing fridges across Winnipeg, we’ve heard most of what a refrigerator can produce. Here’s a practical guide to what different sounds actually mean — and how to tell the difference between a fridge that’s working as it should and one that needs attention.
Sounds that are completely normal
A steady low hum
This is the compressor running. It’s the most constant sound a fridge makes — a low, steady hum that comes and goes as the compressor cycles on and off to maintain temperature. You’ll hear it more in a quiet house, especially at night. As long as the hum is consistent and the fridge is cooling properly, this is nothing to worry about.
Clicking when the compressor starts or stops
A single click or two when the fridge kicks on or shuts off is normal. That’s the relay or the thermostat switching the compressor on and off as the fridge reaches and drops from its set temperature. It’s a routine sound that happens multiple times a day in every refrigerator.
Gurgling or bubbling sounds
Refrigerants move through the cooling system as a liquid and a gas, and that movement creates gurgling or bubbling sounds — similar to water moving through pipes. You’ll often hear this shortly after the compressor shuts off. It’s normal and means the system is working as intended.
Dripping or trickling water sounds
During the defrost cycle, ice that has built up on the evaporator coils melts and drips down into a drain pan. That dripping sound is expected and usually happens once or twice a day depending on how the fridge is set up. If you hear it periodically and the fridge is cooling normally, it’s not a cause for concern.
Ice maker sounds
If your fridge has an ice maker, expect a range of sounds: a low hum while ice is being made, a louder rumble when ice drops into the bin, and occasional water flowing sounds as the tray refills. These are all normal parts of the ice-making cycle.
Sounds worth investigating
Loud or unusually frequent humming
A hum that’s significantly louder than usual, or a compressor that seems to be running almost constantly without cycling off, can indicate a few things. The condenser coils may be dirty — coils coated in dust and pet hair force the compressor to work harder and run longer to maintain temperature. Cleaning the condenser coils (usually located at the back or underneath the fridge) is a maintenance task most homeowners can do themselves.
Constant compressor running can also indicate a door seal that’s not sealing properly, allowing cold air to escape and warm air to enter continuously. Check the door gaskets by closing the door on a piece of paper — if you can pull the paper out easily, the seal isn’t tight enough and needs to be replaced.
Buzzing or vibrating sounds
A buzzing noise can come from a few different places. If it’s coming from behind the fridge, it may be the condenser fan motor starting to wear out. If it’s coming from inside the freezer section, the evaporator fan — which circulates air through the fridge and freezer — may be hitting a buildup of ice or starting to fail.
A buzzing that starts and stops with the compressor cycle is worth noting. If it’s getting louder over time or is accompanied by the fridge not cooling as well as it used to, that’s a signal to have it looked at.
Rattling
Rattling from the back of the fridge is often caused by the drain pan vibrating against the floor or the fridge body — repositioning it usually solves the problem. Rattling can also come from items on top of the fridge vibrating, or from the fridge itself not sitting level on the floor.
If the rattling comes from inside the fridge and isn’t related to loose items on shelves, it’s worth checking the evaporator fan and the ice maker mechanism.
Repeated clicking that doesn’t stop
A single click when the compressor starts is normal. Rapid, repeated clicking — especially if the compressor doesn’t start properly — often points to a failing start relay. The start relay is a small component that helps kick the compressor into operation. When it fails, the compressor tries to start, clicks, fails, and tries again in a loop.
This is a relatively inexpensive repair, but left unaddressed it can lead to compressor failure, which is one of the more costly fridge repairs. If you hear repeated clicking and the fridge isn’t cooling properly, call a technician sooner rather than later.
Sounds that need prompt attention
Loud knocking or banging
A knocking sound coming from the compressor area — particularly if it’s happening when the compressor starts — can indicate the compressor itself is struggling. Compressors that knock or bang are often nearing the end of their life. Whether it makes sense to repair or replace depends on the age of the fridge and the cost of the repair — a technician can give you an honest assessment.
Squealing or screeching
A high-pitched squeal is almost always a motor bearing starting to fail. It can be the evaporator fan motor inside the freezer compartment, the condenser fan motor at the back of the fridge, or in some cases the compressor itself. These sounds tend to get worse over time, and a motor that’s failing will eventually stop working entirely — taking the fridge’s cooling performance with it.
Hissing that’s new or getting louder
Some hissing is normal as refrigerant moves through the system. Hissing that’s new, louder than before, or accompanied by the fridge not cooling as well as it should can indicate a refrigerant leak. Refrigerant issues require a certified technician — this isn’t something that can be addressed without the right equipment and certification.
A note on older fridges
Older refrigerators tend to be noisier than newer ones — motors wear, insulation compresses, and components that were once quiet develop more vibration over time. If your fridge is more than 15 years old and has started making new sounds, it’s worth having it assessed. Catching a failing component early is usually more cost-effective than waiting until something stops working entirely.
We service refrigerators of all ages and brands across Winnipeg. If your fridge has started making a sound that concerns you, we’re happy to take a look and give you a straight answer about what’s causing it and what to do about it.
Learn more about our fridge repair service →
Frequently asked questions
Is it normal for a fridge to make noise all the time?
A fridge that hums steadily is normal — that’s the compressor running. What’s not normal is a compressor that never cycles off, unusually loud humming, new rattling or buzzing sounds, or any squealing or knocking. If the sound is new or getting worse, it’s worth investigating.
Why is my fridge suddenly louder than it used to be?
The most common causes are dirty condenser coils forcing the compressor to work harder, a worn fan motor, a door seal that’s no longer sealing properly, or a failing start relay. Start by cleaning the condenser coils and checking the door gaskets — if the noise continues, a technician can identify the source.
What does a clicking fridge mean?
A single click when the compressor starts or stops is normal. Rapid, repeated clicking — especially if the fridge isn’t cooling properly — usually points to a failing start relay. This is a relatively straightforward and inexpensive repair, but it should be addressed before it leads to compressor failure.
My fridge is making a buzzing sound inside the freezer. What is it?
Buzzing from inside the freezer section is usually the evaporator fan motor. It can be caused by the fan blade hitting ice buildup — defrosting the freezer manually sometimes resolves this. If the buzzing continues after defrosting, the fan motor may be starting to fail and should be checked by a technician.
Should I be worried about a gurgling sound from my fridge?
No — gurgling is the sound of refrigerant moving through the cooling system. It’s completely normal and typically happens shortly after the compressor shuts off. As long as the fridge is cooling properly, gurgling is nothing to worry about.
How do I know if my fridge compressor is failing?
Signs of a failing compressor include loud knocking or banging when it starts, the fridge running constantly without reaching temperature, repeated clicking as the compressor tries to start, or the fridge not cooling at all. If you’re noticing any of these combined, a technician should assess the compressor — it’s one of the more significant fridge repairs and the decision to repair or replace depends on the age and overall condition of the appliance.