Why is My Dishwasher Making Loud Sounds?

Machines such as a dishwasher are there to save you time and make your life better. Plus they are more hygienic than hand washing and when they are finished all the dishes is dry and ready to put away.

If you are fortunate enough to use a dishwasher the chances are it’s hard to imagine life without it. Moreover most people would ideally avoid the amount of dishes you would have to do if it develops a fault. In this case, you will need to call a dishwasher repair company to fix the appliance.

Do You Use a Noisy Dishwasher?

It is absolutely routine to pick up an array of distinct noises while your dishwasher is running. The water entering the machine, the motor working, the detergent compartment opening and closing and the buzz of the grinder blades are all normal noises.

If you have a new dishwasher these noises could be different from your old dishwasher, furthermore if you have installed a dishwasher for the first time they could not be the sounds you were expecting.

Dishwasher Sounds Include:

A Water Sloshing or Swishing Noise

Hearing water gurgling and sloshing about is perfectly regular, these noises may appear pretty noisy if you are not used to having a dishwasher though they are nothing to worry about.

Water can often make a hissing noise as it enters the machine as well as a sloshing or swishing sound as the spray arms rotate. The dishwasher will also drain and refill during the cycle.

A Pounding Sound

A pounding sound can be de to the sprayer hitting into an object that is dangling or a large plate. It could also be the drain pipe thumping into the wall or cabinets.This is more likely if your dishwasher has recently been installed.

Although this isn’t a noise a dishwasher should be making it is simple to fix with a little rearrangement.

Regular Humming as well as Buzzing Noises

Humming sounds are normal for plenty of models. It is the sound of water draining out of the dishwasher. The buzzing is a result of the pump vibrating as it operates and thus is perfectly normal, it may also stop and start as the pump helps push food debris and water out of the machine.

Humming may additionally be a result of the fan keeps the dishwasher pump motor cool while it works.

A lot of dishwashers also have a soft food grinder that could produce a humming noise intermittently during the cycle.

Beeping at the End of the Cycle

Beeping noises when the cycles has finished are completely routine despite the fact they could be irritating, especially if your machine ends its cycle while you’re in bed. In most cases you can switch the beeping off using the control panel. Check your owners manual for details as machines will all be slightly different.

Squealing Noise from a New Dishwasher

A new machine may produce a squealing sounds on first use because there is no water in the machine. This may also cause a rattling sound , this can also happen if your machine has been out of action for a while.

You can avoid this by adding about a quart of water to the machine before turning it on for the first time or when you’ve not used it for a while.

Irregular Dishwasher Noises

It’s not uncommon to feel a little on edge if your dishwasher starts making unusual noises, however there is usually no cause for concern.

On the other hand, if your machine starts making louder than normal or unusual sounds this can call for further investigation, in particular if you’ve had the machine for a while and know how it usually sounds.

Just remember, always cut the power to your machine before taking it apart.

A Loud or Unusual Grinding Noise

Despite the fact that plenty of machines can produce a grinding noise as part of their regular operation if your machine all of a sudden develops a loud or strange grinding noise this is often a sign of an issue and therefore needs further investigation.

Most of the time the reason will be an item such as an olive stone or corn kernel has got stuck in either the waste disposal or the drain impeller, and is grinding into the blades. If you suspect this could be the problem you need to stop the machine and check. If you discover anything, carefully take it out before re-starting the cycle.

The other potential issue is a lack of water in the drum, if this is the case you can check the water inlet to try to determine why the machine is empty.

Worrying Humming, Rattling or Buzzing Sounds

While humming and buzzing sounds may be absolutely routine they could also signal an issue. A broken motor can make a irregular humming or even squealing noise, if this happens it will usually need to be replaced.

A damaged motor can also make a rattling sound.

Rattling noises deriving from a dishwasher are usually a result of plates and cutlery knocking into one another. Nevertheless, particularly noisy rattling may also be indicative of a plumbing issue.

To check, run an empty cycle and if the rattling sound is still there this may indicate a broken pump.

Beeping Mid-Cycle

Although it is absolutely regular for a dishwasher to beep when it is finished, beeping half way through the cycle is commonly your dishwasher telling you there is an error. Many machines will alert you if they are interrupted before they are finished and the cycle is paused. Or you could have to have a look at the owners manual.

Knocking, Clunking and Banging Noises

A regular knocking is usually due to the spray arm bashing an obstruction inside the dishwasher and therefore may be easily sorted by moving your dishes. Items hanging down from the shelves is the most likely cause of this.

It could be worthwhile checking the arm can spin freely regularly before starting your machine to stop this from being an issue as it also means your dishes don’t get cleaned so well.

Banging, however, is usually an indication of a household plumbing problem often referred to as water hammer. The banging sound is related to the water pressure in the pipes and thus often occurs when the valves are opening and closing.

Water hammer can also be the reason behind banging in the pipes.

Unluckily there isn’t much you can do to resolve this on your own therefore it’s best to call a plumber if you suspect this is an issue.

Mending your Dishwasher

Damaged pumps or motors are the most likely cause of strange loud noises emanating from your machine. Luckily these parts are replaceable so you shouldn’t need a whole new dishwasher. You might even be able to replace the part on your own or you might wish to call a local engineer.

More Dishwasher Problems:

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