How do I address strange noises coming from my dishwasher?

How do I address strange noises coming from my dishwasher?

Have you ever been in the middle of a peaceful evening and suddenly heard strange noises coming from your dishwasher? It can be quite a nuisance, not to mention worrying that something might be wrong. But fear not, as we explore various troubleshooting techniques and strategies to help you resolve this problem and enjoy a quiet and efficient dishwasher once again.

Key Takeaways:

  • Strange dishwasher noises can be a common issue that requires a systematic approach to resolve.
  • Understanding the different types of dishwasher noises can help you narrow down the possible causes and solutions more effectively.
  • Proper dishwasher installation and levelling are crucial for minimizing potential noise issues.
  • Loose or worn-out components, clogged filters, dirty drains, water supply issues, and vibrations can all cause unusual noises in your dishwasher.
  • If you’ve tried the previous troubleshooting steps and still experience unusual noises, seeking expert assistance from a professional dishwasher repair service may be necessary.

Understanding the different types of dishwasher noises

When it comes to identifying strange dishwasher noises, the first step is to understand the different types of sounds your appliance can make. This knowledge can help you narrow down the possible causes of the noise and find a solution more effectively.

Here are some common dishwasher noise types:

Noise Type Description
Humming or buzzing A low, steady sound could indicate an issue with the motor or pump.
Rattling or clanking A loud, metallic noise could point to loose or worn-out components, such as the spray arm or silverware basket.
Squealing or grinding A high-pitched noise that may suggest the motor bearings or fan blades need lubrication or replacement.
Gurgling or sloshing A bubbling or swishing sound that might indicate a clogged or improperly installed drain line.

If you hear a noise that doesn’t match any of these descriptions or seems particularly unusual, it’s always a good idea to investigate further.

To help you identify strange sounds coming from your dishwasher, here’s an image that shows the different dishwasher noise types:

Next, we’ll explore various causes and solutions for the different types of dishwasher noises.

Proper installation and leveling of the dishwasher

Proper installation and levelling of the dishwasher can significantly reduce noise during operation. Here are some essential guidelines and tips for ensuring your dishwasher is installed and levelled correctly:

  1. Dishwasher installation: Follow the manufacturer’s instructions carefully when installing your dishwasher. Improper installation can lead to excessive vibrations and noise. Make sure the dishwasher is secured firmly in place, using the appropriate brackets if necessary.
  2. Levelling tips: Use a levelling tool to ensure that the dishwasher is level from front to back and side to side. Adjust the levelling feet accordingly to achieve the desired level. A properly levelled dishwasher will help with the proper functioning of the washer and help with reducing noise.
  3. Checking for door alignment: Ensure that the door is properly aligned and latches tightly. A loose door can cause excessive noise during operation.

Improper installation and levelling can cause the dishwasher to vibrate and create a lot of noise. So, it’s critical to take the necessary steps to ensure that everything is in place and level. Once you have installed and levelled your dishwasher, run a cycle to check for any noise issues. If the noise persists, move on to the next section to identify other possible causes.

Checking for Loose or Worn-out Dishwasher Components

If your dishwasher is making strange noises, it’s essential to inspect its components for any loose or worn-out parts that could be causing the problem. Here are some steps to help you troubleshoot and address this issue:

1. Check the Spray Arms

One common cause of noise in a dishwasher is loose or clogged spray arms. These components should be securely attached to the dishwasher’s tub and able to move freely without obstruction. Check for any damage or wear and clean any debris that may be causing the issue.

2. Inspect the Pump and Motor

The pump and motor are essential components that drive water into the spray arms to clean your dishes. Loose or worn-out parts in this system could cause unusual noises. Inspect these parts for damage and tighten any loose connections. If the motor is making grinding or squealing sounds, it may need to be replaced.

3. Ensure the Door Latch is Secure

A loose or damaged door latch can cause the dishwasher to vibrate and make noise. Inspect the latch for any damage and tighten it securely if necessary.

4. Replace Worn-out Components

If you have inspected all the components and identified worn-out parts, they may need to be replaced. Commonly replaced parts include the spray arms, pump, and motor. It’s essential to use manufacturer-approved replacement parts to maintain your dishwasher’s optimal performance.

By following these troubleshooting steps, you can identify and address any loose or worn-out dishwasher components that may be causing strange noises. Remember to turn off your dishwasher and disconnect it from the power supply before attempting any repairs.

Cleaning the dishwasher filters and drain

If your dishwasher is making strange noises, it may be due to clogged filters or a dirty drain. Over time, food debris and other particles can accumulate and block water flow, causing your dishwasher to work harder and generate more noise. Here are some steps you can take to clean the filters and drain and reduce noise:

Cleaning the filters

Most dishwashers have two types of filters: a main filter and a secondary filter. The main filter is usually located at the bottom of the dishwasher and traps larger food particles, while the secondary filter is a fine mesh screen that catches smaller particles. Over time, these filters can become clogged and affect the dishwasher’s performance.

To clean the filters:

  1. Remove the bottom rack of the dishwasher and locate the main filter.
  2. Remove the filter and rinse it under warm water to remove any debris.
  3. Inspect the secondary filter and remove any debris or particles, if necessary.
  4. Reinstall the filters and the bottom rack.

Cleaning the filters regularly can help prevent clogs and reduce dishwasher noise.

Cleaning the drain

The dishwasher drain is responsible for removing water and debris during the wash cycle. A dirty or clogged drain can cause water to back up and generate noise. Here’s how to clean the drain:

  1. Turn off the dishwasher and disconnect the power.
  2. Remove the bottom rack and locate the drain.
  3. Using a soft brush or cloth, remove any visible debris or particles from the drain.
  4. Insert a plunger into the drain and push and pull it several times to loosen any blockages.
  5. Run hot water down the drain to flush out any remaining debris.
  6. Reinstall the bottom rack and connect the power.

By cleaning the dishwasher filters and drain regularly, you can ensure optimal dishwasher performance and reduce unwanted noise.

noise reduction

Addressing Water Supply Issues and Water Hammering

If you’ve ruled out loose components and installation issues, it’s worth checking for water supply problems. Low water pressure or water hammering can lead to strange noises in your dishwasher, making it essential to address these issues promptly.

Low Water Pressure:

Low water pressure is a common issue that can cause your dishwasher to make unusual noises during the wash cycle. It can also result in poor cleaning performance, leaving behind soapy residues and food particles. Here’s how to resolve this issue:

  1. Check the water supply valve to ensure it’s fully open.
  2. Inspect the dishwasher’s water inlet valve to make sure it’s not clogged.
  3. Remove and clean the water inlet valve screen, if necessary.

These steps should help restore normal water pressure to your dishwasher and resolve any noise issues resulting from low water pressure.

Water Hammering:

Water hammering occurs when water pressure in the pipes suddenly changes, causing a loud banging noise in your plumbing system. This can occur when the dishwasher’s intake valve closes abruptly, creating a shock wave that travels back through the pipes. Here are some steps to address water hammering in your dishwasher:

  1. Install a water hammer arrestor at the dishwasher’s water supply line to absorb the shock wave.
  2. Check the dishwasher’s water inlet valve for damage or wear and replace if necessary.
  3. Ensure that your home’s water pressure is within the appropriate range for your plumbing system.

By addressing water supply issues and water hammering, you can minimize noise problems and ensure that your dishwasher runs smoothly and quietly.

Isolating and Reducing Vibration Noise

If you have ruled out the other common causes of dishwasher noise and still hear vibrations, it’s time to focus on reducing or eliminating them. Vibrations from the dishwasher can be caused by many factors such as imbalance, movement, or even the type of flooring your dishwasher is sitting on.

To minimize dishwasher vibrations and noise, here are some things to consider:

  1. Levelling Feet Adjustments: Ensure that all four levelling feet of your dishwasher are adjusted to the same height. Adjusting these legs can help distribute weight evenly and prevent rattling or vibrations.
  2. Insulation: Adding insulation to the dishwasher’s sides or the surrounding cabinets can help deaden the sound and reduce vibrations.
  3. Anti-vibration Pads: Placing anti-vibration pads under the dishwasher’s legs can absorb and minimize shock and vibrations. These pads can be found at most hardware stores.

In addition to these tips, you can also consider isolating the dishwasher from the surrounding cabinets. This can be done using a dishwasher installation kit, which typically includes brackets to secure the machine to the cabinets.

Remember, reducing or eliminating dishwasher vibrations and noise may take some trial and error. Try these methods one at a time and test your dishwasher after each modification to determine which method works the best for reducing the sound.

Calling a Professional Dishwasher Repair Service

When all else fails, and strange noises persist, it may be time to call in the experts. A professional dishwasher repair service can quickly diagnose and resolve any technical or mechanical issues with your appliance, providing peace of mind and a quiet kitchen once again.

One of the main benefits of seeking expert assistance is accurate noise diagnosis. Professional technicians have the skills and tools to pinpoint the source of the noise and develop an appropriate repair strategy. They can also provide an estimate of the costs involved and a timeline for completion.

Another advantage of professional dishwasher repair is access to genuine replacement parts. Using generic or unauthorized parts may cause further damage to your appliance or compromise its performance, leading to even more noise and other problems. Dishwasher repair technicians have access to high-quality parts directly from the manufacturer, ensuring your appliance is repaired to factory specifications.

Finally, expert assistance saves time and effort. Trying to diagnose and repair a complex dishwasher issue can be frustrating and time-consuming, especially if you don’t have the necessary tools or technical knowledge. By calling a professional dishwasher repair service, you can sit back and relax while the experts handle the problem.

To summarize, if you’ve exhausted all the troubleshooting techniques mentioned in this article and still have strange noises coming from your dishwasher, don’t hesitate to call a professional repair service. With their expertise, you can save time, money, and frustration, and enjoy a fully functioning and quiet dishwasher once again.


In conclusion, addressing strange noises coming from your dishwasher requires a systematic approach to identify and resolve the issue. By following the steps outlined in this article, you should be able to diagnose and tackle common dishwasher noise problems effectively.

Remember, proper installation and levelling of the dishwasher, regular maintenance, and professional help when needed can all contribute to a quieter dishwasher experience. It’s crucial to understand the different types of dishwasher noises and identify them correctly to narrow down the possible causes and solutions more effectively.

Cleaning the dishwasher filters and drain, checking for loose or worn-out components, addressing water supply issues and water hammering, and isolating and reducing vibration noise are some of the troubleshooting techniques that can help address strange dishwasher noises.

Expert Assistance

If you have tried the previous troubleshooting steps and are still experiencing unusual noises from your dishwasher, it may be time to call in a professional dishwasher repair service. Experienced technicians can diagnose the issue accurately and repair any damaged components efficiently. Seek expert assistance promptly to avoid potential damage to the dishwasher and ensure long-lasting performance.

By following these guidelines and tips, you can optimize the performance of your dishwasher and say goodbye to strange noises during operation. A quiet and efficient dishwasher not only improves your daily life’s quality but also saves you money in the long run by preventing costly repairs and replacements.

Max Appliance Repair

Written by Max | An appliance repair technician with more than 15 years experience in appliance repair services in Toronto and the GTA.

Disclaimer: This post "How do I address strange noises coming from my dishwasher?" is for information purposes only. If you need specific help, please contact Max Appliance Repair at