Why Is My Chatsworth Dishwasher Making Loud Sounds?

Identify and Address Unusual Dishwasher Noises

Dishwashers Aren’t Silent—But They Shouldn’t Be Loud

Modern dishwashers are built to operate quietly. So if your appliance has started making grinding, buzzing, thumping, or squealing noises, it’s worth investigating. While some sound is normal—like water spraying and mild motor hums—loud or unusual noises often point to a developing issue. Here’s how to pinpoint the problem and what Chatsworth homeowners can do next.

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Common Reasons Your Dishwasher Is Making Noise

Debris in the Pump or Spray Arms

Small bones, glass shards, or bits of food can make their way into the circulation pump or get stuck in the spray arm nozzles. This can create grinding or rattling sounds during the wash cycle.

Faulty Wash Pump Motor

The motor powers water circulation. If it’s worn or failing, it may emit a loud humming, grinding, or whirring noise. This usually gets louder over time as the motor wears out further.

Worn Bearings or Seals

Internal bearings or seals in the motor assembly can degrade over time, leading to squealing or screeching noises. If you hear this consistently, it’s time to have the motor inspected.

Loose Spray Arms

If a spray arm isn’t securely attached or becomes warped, it can bump into dishes or the rack, making a thumping or knocking sound. Inspect the arms for cracks, wobbling, or misalignment.

Drain Pump Issues

The drain pump activates near the end of the cycle. A loud buzzing or clicking noise may indicate a clog, damaged impeller, or mechanical failure.

Mounting or Installation Problems

Dishwashers that aren’t level or have loose mounting brackets may vibrate excessively. This can make the entire unit sound louder than it should, especially during spin or pump cycles.

Dishes Positioned Incorrectly

Sometimes, loud sounds are caused by items that are too close together, touching the spray arms or each other. Avoid stacking utensils or placing tall items directly in the path of the rotating spray arms.

How to Quiet a Noisy Dishwasher

  • Remove and clean the spray arms and pump filter regularly.
  • Run a cleaning cycle with a dishwasher cleaner to remove buildup.
  • Ensure the dishwasher is level and mounted securely.
  • Space out dishes evenly and avoid overloading racks.
  • Use sound-dampening insulation if the unit is mounted beneath a hard countertop.

When to Call for Help

If your dishwasher noise is getting worse, sounds mechanical, or involves buzzing, grinding, or screeching, it’s time for professional inspection. Issues with motors, pumps, or bearings can lead to larger failures if not addressed early.

Call (818) 867-8259 now to speak with someone about your noisy dishwasher in Chatsworth. We’ll help you take the next step toward a quiet, reliable kitchen.