Why Is My Anaheim Dishwasher Making Loud Sounds?
Dishwashers are designed to run quietly in the background—but when yours starts making strange or loud noises, it could be a sign that something’s wrong. At Anaheim Appliance Repair Techs, we help homeowners throughout Anaheim troubleshoot unusual dishwasher sounds and restore peace to the kitchen by connecting you with experienced appliance repair companies.
Whether it’s grinding, buzzing, humming, or rattling, here are the most common reasons your dishwasher might be making noise—and what you can do about it.
Common Causes of Dishwasher Noise
Obstructed Spray Arm
If dishes or utensils are blocking the spray arm’s rotation, it may knock into them during a cycle. This causes repetitive thumping or banging sounds. Make sure the spray arm spins freely and dishes are loaded properly.
Debris in the Pump or Filter
Foreign objects like glass shards, food scraps, or even small utensils can enter the pump or clog the filter. This can lead to grinding or buzzing noises as the motor struggles to operate. Cleaning the filter and checking the sump can solve this issue.
Faulty Circulation Pump
A worn-out or failing circulation pump can cause loud humming, buzzing, or grinding sounds. The pump circulates water through the spray arms, and when its bearings wear down, it becomes noisy. Replacement may be needed.
Failing Drain Pump
If your dishwasher makes noise primarily during the drain cycle, the issue may lie with the drain pump motor or impeller. Debris caught inside can also contribute to the sound.
Loose Mounting or Installation
Improper installation or a loose mounting bracket can cause rattling or vibration noises as the dishwasher runs. This is especially common in newer installations or after a recent move.
Worn or Broken Motor Bearings
Motor bearings can wear down over time, leading to a screeching or high-pitched whining sound. If the noise increases with each cycle, it’s likely time for professional repair or motor replacement.
Unusual Dishwasher Sounds and What They Mean
How to Prevent Dishwasher Noise
Need Professional Help?
If your dishwasher continues to make loud or unusual noises, it’s best to have a professional technician inspect it. At Anaheim Appliance Repair Techs, we provide fast, effective solutions for noisy dishwashers—whether the issue is mechanical, electrical, or installation-related.