Why is My Dishwasher Making Loud Sounds?

Home Appliances such as a dishwasher are there to save you time and make your life better. Not to mention the fact that they are more hygienic than washing up by hand and when they are finished all the dishes is dry and ready to put away.

If you are fortunate enough to have a dishwasher the probability is it’s hard to remember life without it. And you would ideally avoid the piles of dishes that you would need to do if it breaks. In this case, you’ll need to call a dishwasher repair company to fix the kitchen appliance.

Is Your Dishwasher Too Loud?

It is completely regular to hear an array of different noises while your dishwasher is running. The water running into the machine, the motor spinning, the dishwasher tablet drawer clicking open as well as the hum of the grinder are all regular noises.

If you replace your dishwasher these noises could be inconsistent from your old machine, and if you have installed a machine for the first time they could not be the noises you were expecting.

Dishwasher Sounds Include:

A Water Sloshing or Swishing Noise

The sound of water gurgling and sloshing about is absolutely routine, they can appear pretty intrusive at first but they are nothing to worry about.

Water can in many cases make a hissing sound as it pushes through the inlet as well as a sloshing or swishing sound as the spray arms spray it around the drum. The machine will also drain and refill multiple times each time it runs.

A Pounding Sound

A thumping sound could be the result of the spray arm hitting into an object that is hanging down from the racks or an oversized plate. It could also be the drain pipe thumping against the wall or cabinets.This is more likely if your dishwasher has just been installed.

Despite the fact that these aren’t noises your dishwasher is designed to make it is not difficult to fix with a little adjustment.

Regular Humming and Buzzing Noises

Humming noises are normal for many models. This is the noise the water makes pumping out of the machine. The buzzing is due to the pump vibrating as it operates and thus is completely regular, it could also pause as the pump may not run continuously.

Buzzing may also be heard from the fan that cools the pump motor while it is running.

Plenty of machines also have a food disposal grinder that could make a buzzing noise during the cycle.

Beeping When the Cycle Has Finished

Beeping sounds when the cycles has finished are completely normal although they may be annoying, particularly if your dishwasher completes running at night. You should be able to turn this noise off on the dishwasher controls. .

Squealing Sound from a New Dishwasher

A new machine may produce a squealing noise the first few times it is run due to there not being any water in the machine. This could also result in a rattling noise , this can also happen if your machine has been out of action for a period of time.

You can avoid this by putting water in the drum before turning it on for the first time or when you’ve been away.

Abnormal Dishwasher Noises

It’s not uncommon to get a little uneasy if your dishwasher starts making funny noises, however there is usually nothing to worry about.

That being said, if there are loud or unusual noises coming from your machine this could require further investigation, especially if you’ve had your dishwasher for some time and know how it usually sounds.

Don’t forget, if you are going to start taking your machine apart you should always turn off the power first.

Loud or Unusual Grinding Sounds

Despite the fact that many machines can make a soft grinding noise as part of their routine cycle if your machine suddenly begins to emit a loud or unusual grinding noise this is not considered a good sign and needs further investigation.

Most of the time the reason will be that something is caught in either the the waste disposal or the drain impeller, and is grinding into the blades. in this case you should stop the machine and check. If you find something, carefully remove it before re-starting the dishwasher.

The other potential issue is a lack of water in the drum, if this is the case you should have a look at the water inlet valve to try to determine why the dishwasher doesn’t have enough water.

Irregular Humming, Rattling or Buzzing Noises

While humming and also buzzing noises can be completely normal they could also be a sign of a fault. A faulty motor may make a high pitched humming or even squealing sound, if this happens it will often need to be replaced.

A faulty pump may also produce a rattling noise.

Rattling noises coming from a machine are most likely a result of dishes and cutlery hitting against each other. Nonetheless, particularly loud rattling could also be a water problem.

To check, run an empty cycle and if the rattling sound persists this could indicate a damaged motor.

Beeping Before the Cycle is Over

Although it is absolutely regular for a dishwasher to beep when it is finished, beeping mid cycle is often your machine indicating there is a fault. Many dishwashers will alert you if they are opened before they are finished and the cycle is paused. Or you may need to consult your manual.

Knocking, Clunking and Banging Noises

A regular knocking is usually due to the arm hitting an obstruction inside the dishwasher and can be quickly fixed by moving your dishes. Items dangling from the racks is often the problem.

It could be worthwhile checking the arm is able to rotate freely routinely to prevent this from being an issue as it also means your dishes don’t get cleaned so well.

Banging, however, is more often a result of a household plumbing issue often referred to as water hammer. The banging noise is related to the water pressure in the pipes and usually happens when the valves are opening and closing.

Water hammer could also be the reason behind rattling in the plumbing.

Unfortunately there isn’t much you are able to do to resolve this yourself and so it’s easiest to phone a plumber if you imagine this is the problem.

Fixing your Dishwasher

Broken pumps as well as motors are the most likely cause of strange loud sounds coming from your machine. Luckily these parts can be replaced so you shouldn’t need to replace your dishwasher. You may even be able to to the repair yourself or you could need to phone a local repair person.

More Dishwasher Problems:

  • Dishwasher Leaking
  • Dishwasher Not Turning On
  • Dishwasher Not Draining
  • Dishwasher Not Drying