Dryer Squeaking, Thumping or Grinding? What Each Sound Means
Dryers are honest machines: each of their failing parts makes its own distinct sound, and matching the noise to the part is most of the diagnosis. Run an empty cycle, listen for thirty seconds, and find your sound below. First, though, rule out the obvious with a flashlight: a coin in the drum, a bra wire through a drum hole, or a shoe left in a pocket accounts for a satisfying share of "broken" dryers.
Squealing or squeaking
A high squeal, often worst at startup or with heavy loads, points at the drum's support hardware: worn drum rollers or glides that the drum rides on, an idler pulley that keeps the belt tensioned, or, at the rear on some designs, a drum bearing. These are wear parts on every dryer past its first years, the repairs are routine, and the squeal only gets louder and eventually becomes the grind described below, so earlier is cheaper.
Thumping or rhythmic knocking
A steady thump once per drum revolution usually means a roller has flat-spotted from sitting under load, or the belt has hardened unevenly. A thump that appears only with certain loads is often just an unbalanced twist of jeans. Persistent per-revolution thumping on empty runs earns a roller-and-belt service, typically done together since the labor overlaps.
Grinding or scraping
Metal-on-metal grinding is the sound of a support part fully worn through: a roller down to its shaft, a failed glide letting the drum ride the housing, or an object trapped between drum and bulkhead. Stop using the dryer at this stage; every cycle now scores the drum itself, converting a cheap parts job into an expensive one.
Rattling, buzzing and the rest
A rattle that changes when you lean on the machine is feet, panels or something in the lint housing. A hum with no drum movement is a seized motor or a failed start component. A loud roar that tracks with airflow is the blower wheel, often with debris in it. And a click at cycle start is normal relay life. Our broader appliance sounds guide covers the neighbors in the laundry room.
When to book
Book service for any squeal that persists past a week, all grinding immediately, motor hums, or roaring blowers. Rollers, glides, idlers, belts and blower wheels are all standard single-visit repairs. Appliance Surgeon provides dryer repair across the D.C. metro, including Annandale and Oxon Hill. Describe the sound and when it happens; that description is the diagnosis half-done.