This article is about faults that can cause a noisy tumble dryer. However, due to the way dryers are designed, many tumble dryer noises can be difficult to fix because you need to strip the entire dryer down to get to some parts. This article gives general guidance without specific stripping down instructions.
Tumble dryers, particularly condenser and heat pump dryers can be complicated to strip down and get back together!
Metallic scraping noise
Metallic scraping noises should not be ignored. This sound usually means the metal drum is scraping on something as it revolves. If ignored, serious wear can occur.
As you can imagine, something metal constantly catching on something else – even something else metal – will inevitably result in wear of one or both of the parts involved. I’ve seen many simple faults ignored until only a very expensive repair will fix it.
Other metallic scraping noises could be caused by the plastic bearings the drum rests and rotates on wearing down so much that the lip of the drum at the front can scrape on metal.
Make sure the dryer is level. If not level the cabinet can slightly twist causing drums to catch on nearby parts. Hotpoint and Indesit tumble dryers used to be terrible for scraping noises, and they brought out modifications to try and address the problem.
It’s hopefully solved by now, but cheap dryers, or even expensive ones not well made, can have flimsy casings which twist easily and have too little clearance between the revolving drum and the back panel.
Squeaking noises
These can be caused by tension pulleys which usually tension the drive belt and revolve all the time the drum is turning. They are small wheel-like plastic parts that are held against the drive belt with strong springs, and run on a small metal shaft. They commonly dry out or wear.
The proper cure for this is to replace the pulleys and the shaft they run on, or at least strip them, clean them and grease them with high melting point grease if they aren’t too worn. Unfortunately though these tension (or jockey) pulleys are not usually accessible without stripping the dryer down though some dryers allow you to remove a side panel if you can work out how to take it off.
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Squeaking bearing
On some tumble dryers are dry or worn bearing can cause squeaking noise. This is particularly common on some Indesit or Hotpoint tumble dryers. Check out the comments below where 2 people have contributed their experience on how they dealt with their squeaking tumble dryers.
Rumbling noises
Deep rumbling noises can also be caused by the same belt tension pulleys from the last section. Depending on their design they can develop squeaks or a rumble. So can worn drum bearings, which are usually just shiny plastic parts the drum rests on at the front and a single brass bearing at the rear centre of the drum.
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Noisy motor
The motor can of course become noisy, though it is pretty rare because they revolve so slowly that they don’t tend to wear much. If the belt is removed and any tension pulley brackets moved out of the way a motor can be run on its own to see if it’s creating the noise.
Warning: refitting a tumble dryer drive belt can be extremely difficult. They are very strongly tensioned and special tools are often needed to be able to force one back on, especially with a brand new belt.
Condenser dryer noises
Condenser tumble dryers have more parts than vented dryers and one which can cause noises is the small pump which pumps condensed water into the condenser drawer. If this pump becomes noisy it should be a different noise to the noise of the drum revolving and should continue even when the drum pauses when reversing.
The condenser pump may run continuously during the cycle, or it may be designed to kick in and out intermittently during the cycle. If it develops excessive noise it may need replacing. This water pump can develop a loud screeching noise. Access may be available from the rear panel but some may need side panels and frontages removing.
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We have just got an Indesit condenser dryer and the pump is louder than the drum spinning. We had the same model previously and the pump wasn’t audible. What level of noise should the pump expect to be making and do you think we have problem? Any advice would be much appreciated before we call Whirlpool.
Hello Andrew. I don’t think you should be aware of the pump, just the normal noise of a dryer’s drum turning.
Hello, I have a basic White Knight tumble dryer which has started making a loud banging noise. I have taken off the back as I thought it would be the bearings that needed changing, but the actual mounting shaft that is riveted to the back of the drum is really loose. Is there any way of tightening this?
Hello Sarah. If it has become loose it may well have damaged the bearing that it fits into. It would need to be re-riveted in properly. The old rivets would need drilling out.
Thanks for the advice from July 17th – we had the pump replaced under warranty and it runs quietly now.
Just an FYI for the top comment recommending copper grease, don’t do it…… copper grease is an abrasive compound, use something like red rubber grease instead
Thanks David. I usually recommend high melting point grease. I used one designed for wheel bearings in cars. I think it was LM by Castrol.
Can someone please explain what this noise is?
https://youtu.be/anVL86XOE2E
Hello James. That doesn’t sound like a tumble dryer at all. I don’t know of anything in a dryer that runs so fast as to make that kind of noise. I would check the small pump that pumps condensed water into the drawer. The best way to troubleshoot an appliance noise is to take off the lid and if possible the back panel and locate where the noise is coming from.
Hi, hope someone might be able to help.
Squeeling noise coming from tumble dryer. Does not happen straight away, seems to start when it gets hot.
https://youtu.be/YFFsqdN7jSs
We have it just over a year. Had a look and the pulleys and drum wheels seem ok. Would the noise start straight away if it was the bearings?