The short answer
A new noise from a compact dryer points first at one thing: the flexible duct is slapping against the wall. Next on the list: the drum glides or the felt seal have worn through. Before anything else, work out whether the noise tracks the drum turning or the motor running — that single observation splits the list in half.
What you observe
- A sound the machine did not make when it was new — Note whether it is fast or slow before anything else.
- The noise is behind the machine rather than inside it — Location alone separates duct from drum.
- A rasp or scrape once per drum rotation — Rotation-linked noise comes from the drum, not the motor.
- A high squeal that is worst at the start of a cycle — Temperature-dependent noise points at a dry bearing.
- NEAR MISS — a soft rush of air with no mechanical sound — That is the blower doing its job. Nothing to fix.
Causes, most likely first on this machine
- The flexible duct is slapping against the wall — First on this machine because a short duct run through a wall or a window panel leaves the duct loose behind the cabinet with room to move.
- The drum glides or the felt seal have worn through — Ranked here because the glides are the fastest-wearing parts in the drum and the noise they make is very distinctive.
- The idler pulley is squealing — Ranked here because it is the commonest squeal in a dryer and it does not damage anything for a while.
- Something is loose in the drum or the blower — Last, but get it out: a coin circulating in a blower housing eventually chips the wheel.
Check in this order, and why
- Hold the duct steady while the machine runs — A noise that stops under your hand is not the machine.
- Note whether the noise tracks drum rotation or motor speed — Glides track the drum; a pulley tracks the motor.
- Note whether the squeal changes as the machine warms up — A dry bush squeals cold and often quietens hot.
- Listen for a hard clatter at motor speed rather than drum speed — A loose object rattles fast; a worn part rasps slowly.
What an owner can safely check
- Decide whether the noise is fast or slow — The drum turns slowly and the motor turns fast; the noise belongs to one of them.
About 10 min
- Steady the duct by hand while it runs, then clip it back — Support it so it cannot beat against anything.
About 15 min
- Turn the drum by hand and listen for a scrape at one point — Report where in the rotation it happens.
About 10 min
- STOP HERE if the noise survives every check above — Glides, an idler or a blower mean the cabinet comes apart. Service call.
Before you open anything
Safety
Unplug the machine or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off, and a dryer that has just cut out on temperature is hot inside long after it is silent. Never run the machine with the duct disconnected for longer than the few seconds a test takes — exhaust indoors carries lint and moisture into the room. And never restart a machine that has cut out on temperature until it is fully cold.
When to call a technician
Call once the machine is level, the duct is clipped clear and nothing loose is in the drum, and a rasp, squeal or rattle is still there. That means the cabinet comes apart. Call immediately if you hear metal grinding on metal, or if the noise arrived with a burning smell — a seized idler can scorch a belt in minutes.
Nearest pages of this class
What this page does not cover
This page is written for the brand and the machine class, not for one family or model line. Where a family- or model-specific page exists for your machine, that page is the more specific answer. Deliberately absent: duct diameters, capacity figures, glide and belt part identifiers and wiring colours, which differ between the wall-vented and window-vented families.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
