Normal Dishwasher Sounds and Noise
Normal JennAir Dishwasher Operating Noises
Dishwashers make a variety of sounds during normal operation. This guide explains the typical dishwasher noises you may notice from JennAir dishwashers and how they correspond to each phase of a standard cycle. If you’re wondering whether a hum, swish, click, or brief gurgle is normal, you’re in the right place. Explore cycle-by-cycle sound expectations and discover JennAir features designed to reduce dishwasher noise so you can distinguish routine operation from issues that may need attention.
What Are Normal Dishwasher Sounds?
JennAir dishwashers produce a range of sounds as they move through each cycle. During the fill phase, you may hear a gentle hum or a short whoosh as water enters the tub. During wash and spray phases, expect rhythmic swishing and a steady whooshing as the spray arms rotate. On some models, a variable-speed wash motor may change pitch as it adjusts power for different soil levels. As the cycle nears completion, a soft hum from the drain pump and a brief gurgle at the sink drain are typical. If your model offers heated dry or fan-assisted drying, a low fan or heater hum may be audible. These normal dishwasher sounds and noises are part of routine operation and help indicate each stage is progressing as expected.
Rushing Water Noise:
It is normal to hear a sound like water rushing while the dishwasher fills and cleans. The amount of sound is dependent on the installation. Dishwashers installed on the ends of cabinet rows may allow more sounds to be heard than those installed between two cabinets.
Humming Noise:
It is normal to hear a humming noise while the dishwasher is operating. This noise is heard when the dishwasher drain pump is running.
Swishing Water Noise:
It is normal to hear a sound similar to water swishing as the water is sprayed on the dishes during the cycle. See the following video for a better understanding of how the spray arms operate and cause some of these sounds:
Common Causes of Dishwasher Noise
Knowing what normal dishwasher sounds and noises are can help you distinguish routine operation from issues that may need attention. Several factors influence sound levels in JennAir dishwashers. Different cycle phases produce different dishwasher noises: wash and spray phases often create a steady swish or whoosh, while drain and pump phases typically produce a soft hum and occasional gurgle. The water inlet valve may emit a light clicking as it opens and closes, and the detergent dispenser can make a distinct snap when it releases detergent.
Load size and item type also affect perceived dishwasher sound. Lightweight items—like plastic cups and lids—may rattle or vibrate if not secured, while large cookware can reflect spray and amplify sound. Overloading can cause dishes to contact each other, increasing clatter, whereas underloading can allow items to move freely and chatter. Proper arrangement—placing heavier items on the lower rack, securing lighter items, and ensuring utensils are separated—helps minimize movement and incidental dishwasher noise. These practices can prevent a noisy dishwasher from developing during routine cycles.
Installation and maintenance play a major role in overall sound performance. A unit that isn’t level or securely mounted can transmit vibration to surrounding cabinetry, making normal sounds seem louder. Verify that the leveling legs are properly adjusted, the side or top mounting brackets are correctly installed, and the insulation and toe kick panel are in place. Routine maintenance—cleaning filters, clearing debris from spray arms, and checking the drain path—supports smooth water flow and consistent operation.