Has your dishwasher been making a racket that disrupts your daily routine?

The relentless sound of a noisy dishwasher drain is a common household issue that can be both annoying and embarrassing. It’s time to take action and make that racket a thing of the past.

In this comprehensive guide, we’ll walk you through the causes, tools and materials you’ll need, and step-by-step instructions to fix a noisy dishwasher drain.

Related: How to Make Your Dishwasher Quieter

Causes of a Noisy Dishwasher Drain

There are several reasons why a dishwasher drain may be making noises. Understanding these causes is the first step to solving the problem.

Clogged Drain Hose

A clogged drain hose is one of the most common causes of a noisy dishwasher drain. Food particles, grease, and other debris can accumulate in the drain hose, causing it to become clogged and producing a loud noise.

Loose Connection

A loose connection between the dishwasher and the sink can also cause noise. Over time, the connection can become loose, leading to a loud, rattling noise when the dishwasher is in use.

Damaged Motor Bearings

Another cause of a noisy dishwasher drain is damaged motor bearings. These bearings support the motor that powers the dishwasher. If the bearings are worn or damaged, they can cause a loud, grinding noise when the dishwasher is in use.

Worn Out Circulation Pump Impeller

The circulation pump impeller is responsible for moving water through the dishwasher. If the impeller is worn or damaged, it can cause a loud, rattling noise.

Tools and Materials Needed to Quiet a Dishwasher Drain

To quiet a noisy dishwasher drain, you’ll need the following tools and materials:

  • Pliers
  • Screwdriver
  • Bucket
  • Clean Rags
  • Dishwasher Cleaner

Step-by-Step Guide to Quiet a Noisy Dishwasher Drain

Now that you understand the causes of a noisy dishwasher drain and have the necessary tools and materials, it’s time to get started. Here’s a step-by-step guide to quieting your noisy dishwasher drain:

Step 1: Turn off the Power

Before you begin, turn off the power to your dishwasher. This will prevent any accidental injuries or electrical shock.

Step 2: Remove the Dishwasher from the Cabinet

To access the drain hose and motor, you’ll need to remove the dishwasher from the cabinet. Use the screwdriver to loosen the screws that hold the dishwasher in place, and then carefully remove it from the cabinet.

Step 3: Check for Clogs in the Drain Hose

Examine the drain hose for any clogs caused by food particles, grease, or other debris. Use the pliers to remove any clogs that you find.

Step 4: Tighten Any Loose Connections

Check the connection between the dishwasher and the sink to ensure that it’s tight. Use the pliers to tighten any loose connections that you find.

Step 5: Inspect the Motor Bearings and Circulation Pump Impeller

Inspect the motor bearings and circulation pump impeller to ensure that they’re not worn or damaged. If they are, you’ll need to replace them to quiet the dishwasher drain.

Step 6: Clean the Dishwasher

To keep your dishwasher in top condition, clean it regularly using a dishwasher cleaner. This will help prevent any future clogs and keep the dishwasher drain running smoothly.

Step 7: Replace the Dishwasher and Turn the Power Back On

Once you’ve completed all the steps, it’s time to replace the dishwasher back into the cabinet. Use the screwdriver to tighten the screws, making sure the dishwasher is secure. Finally, turn the power back on to the dishwasher and run it to test for any further noise issues.


Fixing a noisy dishwasher drain doesn’t have to be a difficult task. With this comprehensive guide, you now have all the information you need to quiet your noisy dishwasher drain.

From understanding the causes to gathering the necessary tools and materials, to following the step-by-step instructions, you’ll have a quiet and functioning dishwasher in no time.

Remember to regularly clean the dishwasher to keep it in top condition and prevent any future noise issues. Happy fixing!