A dryer that suddenly gets loud is almost always a worn mechanical part, drum support rollers, the drive belt, the idler pulley, or loose debris, rather than a sign the whole machine is dying. Most causes are inexpensive parts you can replace in an hour, but a few point to a motor or blower problem that’s worth a pro.

Quick answer: what a noisy dryer usually means

The type of noise tells you a lot. A deep thumping or rumbling usually means worn drum rollers or a flat-spotted belt. A high-pitched squealing or screeching points to the idler pulley, glides, or a dry belt. A sharp rattling or clunking is often loose change or a stray item. A grinding or growling noise that comes with weak airflow can be the blower wheel or motor bearings. Always unplug the dryer (or switch off the gas) before you open anything up.

1. Loose change, coins, or debris in the drum

The easiest fix first. Coins, buttons, an underwire, a zipper pull, or a small toy can clatter loudly as the drum spins, and they sometimes slip past the front seal and lodge between the drum and the bulkhead.

The fix: Empty the drum and run it empty for 30 seconds to hear whether the noise follows. Check the lint trap housing and shine a light around the front lip of the drum. Slide a thin tool around the gap to pop out anything trapped. This costs nothing and clears a surprising number of “broken dryer” calls.

When to call a pro: If an object has fallen down into the blower area and you can’t reach it without removing the front panel and you’re not comfortable doing that, a technician can pull it in a few minutes.

2. Worn drum support rollers

Most dryers ride on two to four small rollers (also called drum support wheels). Over years the bushings wear and the drum starts to thump or rumble, often loudest when the dryer is full and warm.

The fix: Rollers are a common wear item and inexpensive. With the cabinet opened, spin each roller by hand, a good one turns smoothly and quietly, a bad one wobbles, grinds, or has a flat spot. Replace them as a set so the drum stays balanced, and add a drop of high-temp appliance oil to the shafts if the manual calls for it.

When to call a pro: Reaching the rollers means removing the drum on many models. If you’re not confident reassembling the belt and drum, hand it to a technician, the part is cheap, the labor is the real cost.

3. A worn or damaged drive belt

The long, thin belt that wraps the drum can fray, crack, or develop a flat spot. A failing belt makes a rhythmic thump-thump as the worn section comes around, and a dry, slipping belt can squeal.

The fix: Inspect the belt for cracks, glazing, or frayed edges. A worn belt should be replaced, it’s one of the cheapest dryer parts and routing it correctly around the idler and motor pulley restores quiet operation. If the belt has snapped entirely the drum won’t turn at all, which is a different symptom worth checking if your dryer isn’t drying clothes properly.

When to call a pro: If the belt keeps wearing out quickly after replacement, something else (a seized roller or pulley) is dragging on it, and that’s worth a professional diagnosis.

4. A failing idler pulley

The idler pulley keeps tension on the drive belt. Its small bearing is one of the most common sources of dryer noise, typically a squeal or chirp that gets worse as the dryer warms up, sometimes turning into a grinding howl.

The fix: With the belt off, spin the idler pulley by hand. A healthy one coasts quietly, a bad one feels rough, notchy, or noisy. Replace it, it’s inexpensive and usually swapped at the same time as the belt since you’re already in there.

When to call a pro: If you’ve replaced the idler and the squeal returns fast, the motor pulley or a roller may be misaligned, which a technician can confirm.

5. Worn drum glides or rear felt seal

The front of the drum rides on small plastic glides, and the rear often has a felt seal. When these wear, metal contacts metal and you get a scraping or screeching sound, sometimes with dark scuff marks on clothing.

The fix: Inspect the front glides and rear felt for wear or missing chunks. They’re a low-cost kit and replacing them stops the scraping and protects your laundry. A torn rear seal also lets heat and lint escape, so fixing it helps airflow too.

When to call a pro: If the drum itself is gouged or out of round from running on worn glides, that’s a bigger repair where a pro can advise whether it’s worth fixing.

6. Blower wheel or motor bearing problems

The blower wheel pushes air through the dryer. If it cracks, loosens on its shaft, or collects debris, you’ll hear rattling, humming, or grinding, often alongside weak airflow and longer dry times. Worn motor bearings make a similar growl that’s present whenever the motor runs.

The fix: Clear any lint or socks from the blower housing first. If the wheel is cracked or wobbling on the shaft it needs replacing. A noisy motor with worn bearings usually means replacing the motor, at which point you weigh the repair cost against the age of the dryer.

When to call a pro: Blower and motor work sits deep in the machine and involves the wiring, so this is a reasonable point to bring in a technician, especially on a gas dryer.

7. An unlevel dryer or loose feet

If the noise is more of a vibration, banging, or walking across the floor, the dryer may simply be unlevel or sitting on loose feet, especially after a big, heavy load throws it off balance.

The fix: Put a level on top and adjust the threaded feet until all four sit firmly on the floor with no rock. Tighten the lock nuts. Make sure the dryer isn’t touching a wall or a nearby washer, contact between cabinets transmits a lot of noise. If your washing machine is also off balance or not spinning, leveling both at once is worth the few minutes.

When to call a pro: Rarely needed, but if leveling doesn’t stop heavy banging, an internal balance ring or counterweight (more common on washers, but present on some dryers) may be the cause.

How to narrow down the noise yourself

Work from cheapest to deepest. Empty the drum and run it to rule out debris. Listen for the noise’s character, thump, squeal, scrape, or rattle, and match it to the sections above. Note whether it changes when the dryer warms up (points to belt or idler) or only under load (points to rollers or leveling). If the noise comes with longer dry times, also check airflow, our guide on why your dryer takes forever to dry clothes walks through the venting and blower checks.

Frequently asked questions

Is it safe to keep using a noisy dryer? A light thump or rattle from leveling or rollers won’t start a fire, but a squealing belt or grinding motor can fail mid-cycle and a dragging part adds friction and heat. It’s best to diagnose it soon rather than run it for weeks.

Why is my dryer loud only when it’s hot? Heat-related squealing almost always points to the idler pulley or a dry drive belt. The bearing or rubber expands as it warms and the noise gets louder, replacing the pulley and belt together usually solves it.

My dryer is making a loud banging, what is it? Banging is usually loose change, a trapped item, or an unlevel cabinet rocking under a heavy load. Empty the drum, level the feet, and make sure it isn’t knocking against the wall or washer before assuming an internal part.

How much does it cost to fix a noisy dryer? The common parts, rollers, belt, idler pulley, and glides, are individually inexpensive, so a DIY repair is cheap. A professional repair runs higher because of labor, and a failed motor is the one repair where replacing an older dryer may make more sense.

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Written by John Fix, FixItWhy’s DIY handyman. Always unplug the dryer or shut off the gas before opening the cabinet, and when a repair reaches the motor, gas valve, or wiring, hire a licensed technician.