The short answer
On a Best Appliance dryer, abnormal noise most often comes down to the load itself. The load leads on a compact machine because the drum is small, a single shoe or buckle makes a great deal of noise in it, and an empty run separates that from a mechanical fault in one cycle. Most of what follows is an owner check; it becomes a service call when the noise is present with an empty drum and a level machine.
What you are actually seeing
- The entries at the end belong to a different fault and send you elsewhere.
- A rhythmic thumping once per drum revolution.
- A squeal that rises with the drum speed.
- A scraping or grinding from the back of the machine.
- If instead you see this: A click as the cycle steps between phases — that is the control and it is normal.
Ranked causes on a Best Appliance dryer
- The load leads on a compact machine because the drum is small, a single shoe or buckle makes a great deal of noise in it, and an empty run separates that from a mechanical fault in one cycle. Settle one observable question before you use this ranking — portable versus permanently installed: a hose that clips onto a kitchen faucet with a drain hose hooked over a sink means portable, while fixed valves and a standpipe mean permanently installed. Follow the water and the exhaust. A portable machine has a hose that clips onto a kitchen faucet and a drain hose that hooks over a sink; an installed machine is plumbed to fixed valves and drains into a standpipe. On portable units, the hookup is temporary, so hookup faults dominate and are free to fix; on permanently installed units, the hookup is fixed, so the fault is far more likely to be inside the machine.
- The load itself — Why: Shoes, belt buckles and zips in a load knock against the drum. It is not a fault, and running the machine empty separates it in one cycle.
- A coin, button or wire in the drum or the blower — Why: Small hard objects fall through the drum seal into the blower housing, where they rattle against the fan every revolution. This is the leading cause of a sudden new noise and it is free to find.
- The machine is not level or is touching something — Why: A machine that rocks, or one whose cabinet touches the wall or the next machine, transmits and amplifies every normal sound.
- Worn drum rollers or a glide — Why: The drum rides on rollers or felt glides. Worn, they give a rumble or a scrape that rises with speed and is present with an empty drum.
What to check, and why in this order
- Free checks first, then the ones that need the machine opened.
- Run the machine empty for a few minutes. A noise that vanishes with an empty drum is the load, and that ends the diagnosis.
- Then check the drum and the blower area for coins, buttons and wires, which is the most common mechanical cause.
- Then identify the rhythm: once per drum revolution is the belt or a flat spot, a rising squeal is the idler, a constant scrape is a roller or a seal.
Checks you can safely do yourself
- Stop at the first step that would need a meter on live terminals.
- Run the machine empty on a short cycle and listen. If the noise is gone, it was the load. — Number: 1 — Tools: none — Time: under half an hour
- Turn the drum slowly by hand with the power off and listen for a scrape or a catch at one point in the rotation. — Number: 2 — Tools: none — Time: a few minutes
- Look round the inside of the drum seal at the front and back for coins, pins and buttons trapped at the edge. — Number: 3 — Tools: torch — Time: under ten minutes
Before you start
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Nothing below asks you to put a meter on live terminals, and nothing below asks you to defeat a door switch or an interlock — those exist to cut power to something that would otherwise hurt you. If the plug, the cord or the outlet is warm, discoloured or smells hot, stop there and have the circuit looked at before you use the dryer again.
When to stop and call a technician
The line is whether the next step needs live testing, sealed-system access or a part you cannot verify. Call for anything requiring the cabinet to come apart, and any repair whose part cost approaches the replacement cost of a compact machine, or when:
the noise is present with an empty drum and a level machine there is a squeal that rises and falls with the drum speed the drum scrapes at one point in every revolution
What this page does not cover
Common Best Appliance Dryer Problems (best-appliance-dryer-problems)
This page is generalized across the Best Appliance dryer range: it is written for the brand and the fault, not for one family or one model number. It carries no model-specific code table, wiring detail or part number, and no measured failure rate, because no measured snapshot was available here. Where a family- or model-specific page exists beneath this one, the links below go down to it.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
