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Troubleshooting Guide
Refrigerator Making Noise?
What the Sound Means and What to Check
A new buzz from the back, a knock in the freezer, a hum you can hear from the next room. Here is which refrigerator sounds are normal, which point to a worn part, and what you can check yourself.
Quick answer: A refrigerator making noise is usually just running: humming, gurgling, popping and a short buzz as the ice maker fills are expected. The warning signs are rattling or grinding at the bottom rear (condenser fan), scraping in the freezer (a fan hitting ice) and clicking every few minutes in a warm fridge (start relay). Check that it's level and clear of the wall; if the noise stays, call a technician.
Fridge still noisy? A technician can often come the same day in Chino and nearby cities. $75 diagnostic, applied to the repair.
Below are the eight causes of a refrigerator making noise that we find most often across the Inland Empire and the San Gabriel Valley, normal sounds first, and when to book refrigerator repair in Chino.
The eight causes
1. Normal operating sounds Normal
Every refrigerator makes some noise, and newer ones make more kinds of it. Variable-speed compressors hum at different pitches as they change speed, refrigerant gurgles through the tubing, the walls pop as they expand and contract, water sizzles on the defrost heater, and cubes clatter into the bin. A sound that is steady, brief or tied to a cycle is usually the refrigerator doing its job.
Whirlpool's list of normal refrigerator sounds (opens in a new tab) covers the humming, gurgling, popping and sizzling, along with a brief buzz from the water valve while the ice maker fills.
Signs the sound is normal:
- Both compartments hold their usual temperature
- The sound is brief, or comes and goes with the cooling cycle
- Nothing is warm, frosted or leaking
Can you fix it yourself? There's nothing to fix. If it's loud enough to bother you, the next two causes are the ones to check.
2. Fridge not level or touching something Rattling
A refrigerator that rocks on an uneven floor, leans on a cabinet or touches the wall behind it turns normal compressor vibration into a rattle or a buzz. Loose things do the same: a crooked drain pan, a loose kick plate, jars touching on a shelf or boxes on top of the fridge. Rattling is most often a placement problem, not a broken part.
Signs it's placement or leveling:
- The rattle changes or stops when you press on the side or top of the fridge
- The fridge was recently moved, or the floor was redone
- The doors don't swing shut on their own
Can you fix it yourself? Yes, and it's worth trying first.
- Clear the top of the fridge and move jars and bottles apart.
- Set a level on top of the cabinet and adjust the front legs or rollers.
- Leave a small gap between the fridge and the wall and cabinets.
- Unplug the fridge before you take off the kick plate, then check that the drain pan sits flat.
3. Ice maker or water valve buzzing Buzzing
The water inlet valve at the back of the refrigerator buzzes for a few seconds each time it opens to fill the ice maker or run the dispenser. If the ice maker is on but its water supply is shut off, the valve keeps trying on a schedule: GE's guide to unusual refrigerator noises (opens in a new tab) describes a buzz every 10 to 15 minutes, lasting 5 to 10 seconds.
A chattering while you dispense can mean a kinked water line, and a bang in the water line when the valve snaps shut, called water hammer, is worse when the house water pressure is high.
Signs it's the water valve:
- A buzz from the back on a regular schedule, and no new ice
- The ice maker is on, but the fridge isn't hooked up to water
- A bang in the water line when the ice maker fills
Can you fix it yourself? Yes. Open the water supply valve, or turn the ice maker off until the fridge is connected to water.
If the valve buzzes with the water on and still no ice comes, see ice maker not making ice.
4. Condenser fan blocked, dusty or failing Bottom rear
On most refrigerators the condenser fan sits at the bottom rear, next to the compressor, and pulls air across the condenser coils. A wrapper caught in the blade makes a ticking that GE compares to a playing card in bicycle spokes, a worn motor grinds or squeals, and dust-packed coils make the compressor and fan run longer and louder.
Signs it's the condenser fan:
- Ticking, rattling or grinding from the bottom back of the fridge
- The noise started after something fell behind or under the fridge
- The back of the fridge runs hotter than it used to
Can you fix it yourself? Partly.
- Unplug the refrigerator and pull it away from the wall.
- Remove the lower rear access cover, if your model has one.
- Pull out anything touching the fan blade, but leave any rubber or foam air baffle in place.
- Vacuum the coils with a brush attachment and refit the cover before you plug the fridge back in.
A wobbling blade or a grinding motor needs replacing, and the motor sits beside the compressor's electrical connections, so that part is a technician job.
5. Ice dispenser grinding or clicking Door
When you press the ice lever, a motor turns an auger in the ice bin to push cubes into the chute. If the cubes have melted and refrozen into a clump, the motor grinds or clicks against it and little or no ice comes out. A single snap a few seconds after you take your glass away is the chute door closing, and it's normal.
Signs it's the ice dispenser:
- Grinding or clicking when you press the ice lever, with little or no ice
- Cubes in the bin are stuck together
- The fridge recently lost power, or the freezer door was left open
Can you fix it yourself? Yes, usually.
- Remove the ice bin and break up or discard the clumps.
- Wash and dry the bin, then seat it all the way back.
- Give the ice maker a few hours to refill it.
If the motor hums with an empty bin but the auger won't turn, the motor or its coupling has failed.
6. Evaporator fan noisy or hitting ice Freezer
The evaporator fan sits behind the freezer's back panel and blows cold air through both compartments. A worn motor chirps, squeals or whines; a blade that has iced up scrapes or knocks, and that ice usually means the automatic defrost has stopped working. GE treats a sound like a fan blade hitting something inside the freezer as a fault that needs service, not a normal noise.
Signs it's the evaporator fan:
- Chirping, squealing or scraping from inside the freezer
- The noise stops when you open the freezer door, since on many models the fan pauses with the door open
- Frost on the back wall of the freezer
Can you fix it yourself? No. The fan sits behind the freezer panel, and if ice is the cause, the defrost fault behind it has to be found too. If frost covers the back wall, see freezer frosting up.
7. Clicking from the start relay Clicking
A single click when the compressor starts or stops is normal, and so is the tick of a mechanical defrost timer. Clicking that repeats every few minutes, with a short hum and then silence, means the compressor is trying to start and failing, most often because its start relay has worn out. After a power outage, GE notes the compressor can click for 3 to 5 minutes while it restarts, which is normal.
Signs it's the start relay:
- A click from the bottom rear every few minutes, then a hum that cuts out
- Both compartments are getting warm while the lights still work
- The clicking began after an outage or a surge and hasn't stopped
Can you fix it yourself? No. The relay plugs onto the compressor's live terminals, and testing it takes a meter. If the fridge is warming up, see refrigerator not cooling.
8. Compressor knocking or humming loudly Sealed system
The compressor is the black, dome-shaped pump at the bottom rear. A knock or bang as it starts or stops can come from worn rubber mounting grommets, which a technician can replace, or from a broken mount inside the compressor shell, which means a new compressor. A loud, labored hum, especially with weak cooling, means the compressor is straining; the faults that keep it running nonstop are covered in refrigerator runs constantly.
Signs it's the compressor:
- A knock or bang from the bottom rear as the compressor starts or stops
- A loud hum you can feel through the floor
- The fridge struggles to hold its temperature
Can you fix it yourself? No. The compressor is part of the sealed refrigeration system, and replacing it means recovering refrigerant, which takes recovery equipment and is regulated by the EPA.
Which refrigerator noises are normal?
Sounds that are steady, brief or tied to a cycle are normal. Sounds that are new, getting louder, or that come with a warm compartment or frost are worth tracking down:
| Sound | What usually causes it | What to do |
|---|---|---|
| Low hum that changes pitch | Compressor and fans running | Normal |
| Gurgling or boiling | Refrigerant moving through the tubing | Normal |
| Popping or cracking | Walls and coils expanding and contracting | Normal |
| Sizzling or hissing | Water dripping on the defrost heater | Normal |
| Buzz every 10 to 15 minutes, no ice | Ice maker on with the water off | Open the valve or turn the ice maker off |
| Rattling | Not level, touching the wall, or a loose drain pan | Level it and give it space |
| Ticking or grinding at the bottom rear | Debris in the condenser fan, or a worn motor | Unplug and check the blade |
| Chirping or scraping in the freezer | Evaporator fan worn or hitting ice | Call a technician |
| Clicking every few minutes, fridge warming | Start relay failing | Call a technician |
| Knock or bang as the compressor starts | Worn mounts or a compressor fault | Call a technician |
Freezer making loud noise: the fan, the ice maker or defrost?
Inside the freezer, three things make most of the noise. Chirping, squealing or scraping that stops when you open the door is the evaporator fan. A buzz on a schedule, or cubes thudding into the bin, is the ice maker and its water valve. A crack, pop or sizzle after a quiet stretch is the normal defrost cycle.
What to check yourself first
- Check the temperatures. If both compartments hold their usual temperature, most sounds are normal.
- Find where the sound comes from. Bottom rear, inside the freezer, or the back of the cabinet.
- Level the fridge and give it space. Clear the top, keep it off the wall and cabinets, and adjust the front legs.
- Check the ice maker's water. Open the supply valve, or turn the ice maker off if there's no water line.
- Look at the condenser fan. Unplug the fridge first, then check the blade at the bottom rear for debris.
- Look for frost. Frost on the freezer's back wall plus a scraping sound means a fan hitting ice.
One safety note: unplug the refrigerator before you remove the kick plate or the rear access cover, and put every cover back before you plug it in again. Never try to quiet a clicking compressor by bypassing the start relay or the overload.
When to call a technician
- Chirping, squealing or scraping from inside the freezer
- Clicking every few minutes while the fridge warms up
- A knock or bang from the compressor as it starts or stops
- Grinding from the condenser fan with nothing caught in the blade
- A new noise that comes with frost, a warm compartment or a burning smell
Sounds like yours? A technician can diagnose it at home in Chino and nearby cities, often the same day. $75 diagnostic, applied to the repair.
Era Service repairs French-door, side-by-side, top- and bottom-freezer and built-in refrigerators across the Inland Empire and the San Gabriel Valley, often the same day in Chino and nearby cities. Garage refrigerators work hardest here: summer heat in a Chino or Inland Empire garage keeps the compressor and the condenser fan running longer, so a worn fan or dusty coils tend to make themselves heard there first.
Good to Know
Refrigerator Making Noise: FAQ
A refrigerator usually gets loud because it's working harder or something is vibrating against it. Dusty condenser coils, a hot room or garage, debris in the condenser fan and an unlevel cabinet are the common reasons, and variable-speed compressors hum higher when they speed up. If it's louder and also warm, frosted or clicking, a part is failing.
A low hum is the compressor and the fans running, which is normal, and variable-speed compressors change pitch as they change speed. A loud humming noise that started suddenly, especially with a warm fridge, can mean the compressor is straining or the start relay is failing. A hum from the back with no new ice can be the water valve trying to fill a dry ice maker.
A refrigerator clicks normally when the compressor starts or stops, and a mechanical defrost timer ticks. Clicking every few minutes from the bottom rear, followed by a short hum and silence, means the compressor is trying to start and failing, usually because of the start relay. If the fridge is also warming up, call a technician.
A knocking noise inside the freezer is usually the evaporator fan blade hitting ice, which points to a defrost problem. A knock from the bottom rear as the compressor starts or stops comes from worn mounts or, less often, an internal compressor fault. A bang in the wall right after the ice maker fills is water hammer from the valve snapping shut, which high house water pressure makes worse.
A short buzz while the ice maker fills or the dispenser runs is the water valve opening, which is normal. A buzz every 10 to 15 minutes usually means the ice maker is on but its water is off: open the valve or switch the ice maker off. A buzz or rattle from the bottom rear points to the condenser fan or a part touching the cabinet.
Popping or cracking is the plastic liner and the cooling coils expanding and contracting as temperatures change, most often around the defrost cycle and in the first days after a refrigerator is plugged in. It's normal and needs no repair. A pop that comes with scraping or knocking inside the freezer is different and points to a fan hitting ice.
Fridge making a new noise? We'll find the part behind it.
Open 7 days a week, 9 AM to 6 PM, across Chino, the Inland Empire, the San Gabriel Valley and North Orange County. The $75 diagnostic is applied to the repair, and every repair carries a 90-day parts and labor warranty from Era Service.
Related articles
Refrigerator Runs Constantly?
When nonstop running is normal and when it points to a fault.
Read the guide →Refrigerator Not Cooling?
Why the fridge is warm while the freezer may still work, and what to check first.
Read the guide →Freezer Frosting Up?
Frost on the walls, the food or the back panel: door seals and defrost parts.
Read the guide →Repairing a specific brand? Whirlpool repair, GE repair.