Refrigerator Making a Loud Noise? What Each Sound Usually Means

Quick answer

Most refrigerator sounds are normal. Humming compressors and fans, clicking controls, gurgling refrigerant, popping walls, and sizzling during defrost are all on the manufacturers’ normal-sounds lists. A fridge that’s louder than it should be is usually not level or touching a wall, has loose items on top, or has an ice maker switched on with no water connected. A fan that sounds like it’s hitting something, a noise that stops when you open the door, or loud compressor rattling that doesn’t go away needs service.

First, three quick questions

Is the fridge new? New refrigerators can be louder while they settle in, and popping is much more common in new units (Samsung). Expect it to sound different from your old one, too (Whirlpool). A new door gasket can whistle or squeak because it seals so tightly, which GE says stops within a few days.

Does the noise stop when you open the door? LG says that pattern likely points to a fan and needs service to diagnose. Samsung describes the same thing when a fan is hitting ice.

How loud is it, really? Normal compressor and fan sounds can seem louder at night or early in the morning, when the house is quiet (LG). Samsung gives two benchmarks: popping should sound about like ice cubes dropped into a warm drink, and ice maker or compressor noise should never be loud enough to interrupt a conversation.

What each sound usually means

Sound	Usual cause	Normal?	What to do
Steady hum or buzz	Compressor and fans; louder after frequent door openings or warm food (LG)	Yes	If it’s always loud, check level and clearance.
High-pitched hum or pulsing	High-efficiency compressor (Frigidaire) or variable-speed compressor changing speed (Whirlpool)	Yes, if brief and soft	None
Buzz about every 15 minutes	Ice maker is on, but no water is reaching it (GE)	No, but easy to fix	Turn the water supply on, or switch the ice maker off.
Clicking or ticking	Controls, defrost timer, or the compressor starting and stopping (GE, Whirlpool)	Yes	None
Gurgling, bubbling, or water running	Refrigerant flowing, or defrost water draining (GE, Whirlpool, LG, Samsung)	Yes	None
Popping or cracking	Walls and plastic parts expanding and contracting with temperature (Samsung, Whirlpool, LG)	Yes	Service if very loud (Samsung)
Sizzling or hissing	Defrost water dripping onto the defrost heater (all five brands)	Yes	Service if very loud (Samsung)
Whooshing, blowing, or whistling	Fans moving air; air escaping through the drain tube when a door opens (LG)	Yes	Shifting the fridge an inch or so can help (Samsung)
Rattling or vibrating	Fridge not level, items on top, something behind it, or refrigerant or water flowing (Whirlpool, Samsung)	Usually fixable	Level it, clear the top, pull it out an inch.
Banging or thumping	Ice dropping into the bin; the water line during a fill; water hammer (GE, Whirlpool, Samsung)	Usually	Service if steady, very loud, and not falling ice (Samsung)
Grinding	Ice dispenser motor (Samsung); doors rubbing on cabinets (Whirlpool)	Yes, while dispensing	Service if very loud or not dispensing (Samsung)
A fan hitting something, or steady thudding	Frost or ice around a fan, or an object touching it (Samsung, LG, GE)	No	Service (Samsung, GE). A defrost only helps for a while.
Loud rattling, drilling, or whirring motor	Compressor or fan motor problem (LG)	No, if it keeps going	Service if it persists or cooling suffers (LG)

Brands name sounds a little differently. If your sound isn't here, GE says it may need a technician to diagnose. Source: Samsung, LG, GE, Whirlpool, and Frigidaire support pages listed below

Timing clues from the manufacturers

How often a sound repeats, and how long it lasts, often tells you more than what it sounds like.

What you hear	Timing	Brand	What it means
Ice maker filling (buzz or hum)	Briefly, about every 1 to 1-1/2 hours	GE	Normal
Ice maker trying to fill with no water	About every 15 minutes, or 5 to 10 seconds every 10 to 15 minutes	GE	Water supply is off
Short buzz or rattle on models with an XWF filter	About 5 seconds, once an hour	GE	Ice maker on, water not connected
Water valve buzz after dispensing	Should stop within 7 seconds	GE	Normal
Gurgle in the door after closing it	Several seconds	GE	Normal
Clicking after a power outage	3 to 5 minutes	GE	Compressor trying to restart
Clattering refrigerant valve	About 7 seconds once a day, or about 3 seconds every hour	LG	Normal
Ice maker motor (a drilling sound)	About 15 minutes, every 1-1/2 to 2 hours	LG	Normal; louder if it runs dry
Rattle as the compressor stops	Under 10 seconds, and very quiet	Samsung	Normal

Timings are for the brands named. Other models can differ. Source: GE, LG, and Samsung support pages listed below

1. Level it and give it room

An unlevel fridge or uneven floor can amplify normal motor vibration into loud humming, according to LG. Whirlpool lists an unlevel cabinet as a cause of rattling and buzzing.

• Check the level. Set a bubble level on top of the cabinet and check both front to back and side to side. Adjust the front leveling legs until the fridge is stable and the doors close smoothly (Whirlpool).
• Legs down, rollers up. The leveling legs should rest fully on the floor, with the wheels or front rollers off it (Samsung, Whirlpool).
• Check the floor. A flexible floor can pass vibration along, so Whirlpool recommends a solid one. On a badly uneven floor, LG says you may need to move the fridge to a flat, solid spot.
• Give it clearance from walls and cabinets at the back and sides (LG). For blowing or whistling fan noise, Samsung suggests shifting the fridge an inch or so while keeping 2 inches at the top, sides, and back. Your installation guide lists the clearance for your model.

2. Clear the top and look behind it

Anything stored on top of the refrigerator can vibrate, and Whirlpool lists it as a cause of rattling. Clear it off and listen again.

Something behind the fridge may also be rattling against it, so Samsung suggests pulling it out about an inch to see if the noise stops. Inside, an unsteady item falling over can sound like banging.

3. Check the ice maker and water line

Buzzing, chattering, and banging often come from the water side, not the cooling side.

• No water connected? Turn the ice maker off. An ice maker left on without water makes noise as it tries to fill (GE, Whirlpool, Samsung) and gets louder when it runs dry (LG). All four brands say to switch it off, and Samsung adds that running it dry can damage the refrigerator. On some GE models the switch is a feeler arm you raise. If water is connected, make sure the supply valve is actually on.
• Chattering while you dispense? Whirlpool’s causes are a kinked or sharply bent supply line, a partly closed shutoff valve, air in the line after a filter change, or a clogged or non-genuine filter. Check the line especially if the fridge was just installed or moved.
• Check the filter. A restricted filter or line can make the inlet valve buzz louder than normal during fills (Whirlpool). Make sure the filter is installed correctly and not overdue for replacement.
• Banging when the valve shuts. GE calls this water hammer and traces it to high water pressure in the house supply line. Samsung adds that high pressure makes fill noise louder, and that you can try lowering it as long as the dispenser still fills 3/4 cup in under 10 seconds. A plumber can check your home’s water pressure.

The water dispenser guide covers the filter, the supply valve, and flow tests in more detail.

4. A fan hitting frost or ice

GE says a freezer sound like a fan blade hitting something is not normal and needs service. LG traces steady thudding or whirring to thick frost around the fan or an object touching it.

LG’s fix is a full defrost: food out, fridge unplugged, doors open until all the frost melts (about 24 hours in summer, up to three days in winter). Samsung suggests towels under the fridge for at least 24 hours, swapped as they get wet.

Defrosting removes the ice but not the reason it formed. Samsung says the noise will eventually come back, so it recommends service, and LG says to call if the symptom returns. If the fresh-food section is also getting warm, the full defrost steps and other cooling checks are in Refrigerator Not Cooling? What to Check Before You Call for Service.

5. A flapping sound from underneath

GE describes a sound from under the refrigerator like a playing card hitting bicycle spokes. On GE models without a NeverClean condenser, something may be hitting the condenser fan blade. Most GE refrigerators made since 2001 have the NeverClean design, so check your manual first.

On models where the fan is reachable, GE’s steps are:

1. Pull the refrigerator away from the wall, with a helper.
2. Unplug it.
3. Remove the cover at the bottom of the back. GE says this usually takes a 5/16-inch hex-head driver.
4. Look for something caught in the fan blade, such as a cheese wrapper or a credit card slip, and remove it.
5. Put the cover back, plug the fridge in, and push it back into place.

If the obstruction is a large rubber strip, leave it and schedule service. GE says that strip is an air divider that must be reinstalled correctly. To see where the condenser sits on other designs, see how to clean refrigerator coils.

What about the drain pan?

Defrost water runs down a tube into a drip pan under the fridge, where it evaporates. GE and Frigidaire both list dripping into that pan as a normal sound. The pan is fixed in place on GE refrigerators made in 1987 and later, and Frigidaire calls its pan non-removable, so there is nothing to reseat. For a noise from the base, check the level and step 5 instead.

Grinding and squeaking

• While dispensing ice, grinding is the motor pushing the ice forward, especially for crushed ice (Samsung). If it’s very loud, or happens when you aren’t dispensing, request service.
• When you open a door, check that the doors were installed correctly, aren’t rubbing on cabinets, and that the fridge is level (Whirlpool).
• Squeaky hinges on a new fridge: Samsung says the door wiring harness may need about a week of normal use to seat itself, and suggests a food-grade silicone spray on the hinges, not WD-40.

Loud compressor noise

Samsung says a normal compressor sounds like a quiet engine: it starts, runs at low or high speed, and may click. LG lists compressor rattling or drilling, and a loudly whirring fan motor, as possible problems. If the fridge still cools normally, the sound may be temporary. If it continues or cooling suffers, LG says to contact service. A tapping sound after defrost can be normal, but on an older fridge, or if the noise is new, GE says it may need service.

For more help with your refrigerator, see the refrigerator guides.