New or Louder Noise May Warn of Trouble: 4 Weird Refrigerator Sounds Experts Say You Shouldn’t Ignore

Repeated clicks may signal trouble

A click that returns every few minutes can mean the refrigerator is struggling to stay cold. A failing start relay is one possible cause, as the compressor may repeatedly try to start.

Defrost timers and control boards can also make occasional clicks during normal operation. If comfortable, unplug the refrigerator and inspect the start relay; a rattle when shaken may mean it needs replacing. If cooling worsens or clicking continues, arrange service to help prevent food spoilage.

Listen for changes in humming

A low hum is usually normal and often means the compressor is running. A much louder or constant hum—or a hum that stops while the refrigerator warms—may point to a problem.

Scraping can come from a fan

Repeated scraping or fast ticking may sound like a fan blade hitting something. Ice around the fan can restrict its movement; this differs from the usually normal grinding sound made when dispensing crushed ice.

Check that food is not blocking air vents or preventing the door from closing fully. Look for frost on the back wall inside the refrigerator or freezer. If ice obstructs the fan, defrost according to the owner’s manual, not with a hair dryer. If the problem returns, call a professional to investigate the ice buildup.

Rattling may have simple causes

Rattling can come from jars or bottles touching, a poorly seated shelf, or the refrigerator vibrating against a nearby cabinet. An appliance that is not secure on the floor may also rattle.

Dirty coils are another possibility. Unplug the refrigerator and follow the owner’s manual for cleaning instructions, using light pressure to avoid damage.