Dryer Making Noise When Running: Fix It Yourself (Troubleshooting Guide)

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Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

A noisy dryer often needs cleaning or part replacement. Start by checking the drum rollers and belt. If the noise persists, inspect the idler pulley and motor. Replace worn parts as needed.

Confirm the symptom

Unusual noise during drying cycle
Loud thumping or squeaking
Noise gets louder over time
Noise changes with dryer motion
No noise when idle

Tools and prep

Screwdrivers (flathead and Phillips)
Adjustable wrench
Flashlight
Work gloves
Replacement parts if needed
Owner's manual
Empty laundry basket nearby

Step-by-step troubleshooting

Unplug Dryer
Do: Turn off the dryer and unplug it from the wall outlet.
Observe: Dryer is completely powered off.
Means: Ensures safety during inspection.
Next: Step 2
Access Drum Area
Do: Remove the front panel or top panel to access the drum and internal components.
Observe: Drum and rollers are visible.
Means: Allows inspection for loose or damaged parts.
Next: Step 3
Inspect Drum Rollers
Do: Check the drum rollers for wear, cracks, or looseness. Spin them with your fingers.
Observe: Rollers are smooth and rotate freely without noise.
Means: Worn rollers can cause loud noises during operation.
Next: Step 4
Check Belt Tension
Do: Locate the dryer belt and ensure it is properly tensioned and not frayed.
Observe: Belt is tight and intact.
Means: A loose or damaged belt can cause squeaking or thumping.
Next: Step 5
Inspect Idler Pulley
Do: Check the idler pulley for wobbling or rough spinning. Replace if necessary.
Observe: Pulley spins smoothly without noise.
Means: A faulty pulley can create squealing or grinding sounds.
Next: Step 6
Test Motor and Bearings
Do: Plug in the dryer and run it briefly to see if the noise persists. Listen for motor or bearing issues.
Observe: Noise may indicate motor or bearing failure.
Means: A failing motor or bearings may require professional repair.
Next: Step 7
Reassemble and Test
Do: Reattach the front or top panel and plug in the dryer. Run a test cycle.
Observe: Dryer operates quietly.
Means: Noise was likely due to a loose or worn part.
Next: Done

Common causes

Cause	Likelihood	Difficulty	Part often needed
Worn Drum Rollers Rollers wear out over time and create noise when spinning.	Common	Easy–Medium	Drum rollers
Loose or Broken Belt A loose or damaged belt can cause squeaking or thumping.	Common	Easy	Dryer belt
Faulty Idler Pulley A worn pulley can cause squealing or grinding noises.	Sometimes	Medium	Idler pulley
Failing Motor Bearings Worn motor bearings can create a grinding or humming noise.	Sometimes	Hard	Motor assembly
Foreign Objects in Drum Coins, buttons, or debris can cause loud noises during operation.	Sometimes	Easy	None
Loose Internal Components Loose screws or panels can vibrate and create noise.	Rare	Easy	Screws or panels
Worn Slide Glides Slide glides reduce friction between the drum and cabinet; worn glides can cause noise.	Rare	Easy	Slide glides

Parts matching

Match your dryer's make and model to find the correct replacement parts:

Check the model number on the dryer's data plate
Search for parts using the model number on the manufacturer's website
Compare part numbers to ensure compatibility
Purchase OEM or high-quality aftermarket parts
Consult the owner's manual for part diagrams

If unsure, take the old part to the store for comparison.

When to call a professional

Noise persists after replacing all common parts
You hear a burning smell or sparks
Dryer vibrates excessively and cannot be stabilized
You are uncomfortable working with electrical components
Noise is accompanied by a complete failure to start or heat

FAQ

Why is my dryer making a loud thumping noise?

A loud thumping noise is often caused by worn drum rollers or a loose belt. Check these components for wear or damage.

Can a foreign object cause a noisy dryer?

Yes, coins, buttons, or debris caught in the drum or vent can cause loud noises. Check the drum and vent regularly.

How do I know if the idler pulley needs replacement?

If the pulley wobbles or makes a squealing noise when spun, it likely needs replacement.

Is it safe to replace the dryer belt myself?

Yes, replacing the dryer belt is a common DIY task. Ensure the dryer is unplugged and follow the owner's manual instructions.

What should I do if the noise comes from the motor?

If the noise is coming from the motor, it may indicate a serious issue. Contact a professional repair service.