COMFEE' Portable Mini Dishwasher Countertop with 1.32Gal Built-in Water Tank for Apartments& RVs, No Hookup Needed, 6 Programs, 360° Dual Sp
- Please make sure the distance between your countertop and wall cupboard is more than 19.6" No installation needed: Adding water manually with the water filling guide included in the 1.32Gal built-in water tank, you can p
- Ultra-compact Design: The ultra-compact design allows the dishwasher to wash 30+ items（Max to 9.5-inch plates) at a time while occupying a small area, which is ideal for small houses, apartments, dorms, boats, and camper
- 6 Program Options: NORMAL, RAPID, HYGIENE, FRUIT, GLASS washing programs, and AIR REFRESH extra drying mode meet all your daily needs. Note: Use the standard dishwasher powders or detergents because regular liquid dish s
- High-Temp Hygiene: The Hygiene cycle heats the water up to 162℉, making it great for really dirty dishes and even safe for cleaning your little one's dinnerware.
- Extra Drying & Freshness: The Air Refresh mode circulates air to keep both your dishes and the machine dry and fresh. It helps remove moisture and odors, and if you don't need it, you can turn it off anytime.
COMFEE' Portable Dishwasher Countertop with 5L Built-in Water Tank, No Hookup Needed, 6 Programs, 360° Dual Spray, 192℉
- 6 Program Options: Choose from Normal, Rapid, Hygiene, Fruit, Glass, and Air Refresh modes. All options.
- High-Temp Hygiene: The Hygiene cycle heats the water up to 162℉, making it great for really dirty dishes.
- Extra Drying & Freshness: The Air Refresh mode circulates air to keep both your dishes and the machine dry.
- No Installation Needed: Easy to use to just fill the built-in 5L water tank! You can also hook it up.
A loud, unusual noise during your dishwasher's drain cycle often signals an underlying problem. This specific sound, whether it is a grinding, rattling, or strained humming, usually points to one of three main issues. The most common causes are a clogged or failing drain pump, trapped food debris in the filter or disposer, or an obstruction in the drain hose. Identifying the precise cause is the first step toward a quiet, efficient dishwasher.
Understanding the Drain Cycle and Common Noises
During the drain cycle, your dishwasher removes the dirty water from the wash tub and pumps it out through the drain hose, typically into your sink's garbage disposal or a dedicated drain line. This process should be relatively quiet, with only a soft hum from the pump and the sound of water moving. When loud noises appear, it means something is impeding this process or a component is failing.
1. Clogged or Failing Drain Pump
The drain pump is responsible for expelling water from the dishwasher. It contains an impeller that spins rapidly to push water out. If the pump is clogged or starting to fail, it will produce noticeable noise.
How to Diagnose a Drain Pump Issue
Noise Description: A failing drain pump often makes a loud grinding, buzzing, or humming sound that is distinctly different from the normal operation. If the pump is clogged, you might hear a rattling or scraping noise as debris interferes with the impeller.
- Disconnect Power: Always unplug your dishwasher or turn off the circuit breaker before performing any inspection or repair. Safety is important.
- Remove Lower Rack and Spray Arm: Take out the bottom dish rack. Unscrew or unclip the lower spray arm to access the bottom of the tub.
- Inspect the Filter and Sump Area: Most dishwashers have a removable filter assembly. Clean it thoroughly. Look into the sump area where the drain pump is located. Use a flashlight to check for foreign objects like broken glass, food particles, or small utensils. These items can get sucked into the pump and cause severe noise or damage.
- Manual Impeller Check: With the power still off, reach into the drain port area. Try to carefully turn the impeller by hand. It should spin freely. If it feels stiff or you encounter resistance, there is likely a blockage or the pump itself is seizing up.
- Check for Water Drainage: If your dishwasher is also not draining water, it strongly suggests a pump issue or a drain line clog. For more detailed troubleshooting on drainage, refer to our guide: Dishwasher not draining water? Here are the 7 fastest fixes.
Fixing a Clogged or Failing Drain Pump
- Clear the Clog: If you find debris, carefully remove it with pliers or tweezers. Make sure all foreign objects are out of the pump area.
- Replace the Drain Pump: If the pump impeller does not spin freely, or if the noise persists after clearing debris, the pump itself may be worn out or failing. Replacing a drain pump is a moderately difficult DIY task. You will likely need to pull the dishwasher out from its cabinet and tilt it or lay it on its back to access the pump from underneath.
Cost of Repair
A new drain pump typically costs between $50 and $150 for the part. If you hire a professional appliance technician, expect to pay $80-$150 for a service call, plus $150-$300 or more for labor, in addition to the part cost. Debris in the Food Disposer or Filter
Many dishwashers have a food disposer or a filter system that grinds down or traps food particles. If large or hard pieces of food bypass the filter or get stuck in the disposer area, they can create significant noise during the drain cycle.
How to Diagnose Debris in the Filter/Disposer
Noise Description: This usually sounds like a scraping, clunking, or grinding noise, especially when the water is being agitated or pumped out. It can be intermittent as the debris moves around.
- Disconnect Power: Turn off the power to the dishwasher at the circuit breaker or by unplugging it.
- Remove Racks and Lower Spray Arm: Clear the interior of the dishwasher to get a good view of the bottom.
- Inspect the Filter: Locate the filter assembly at the bottom of the tub. Twist or lift it out according to your dishwasher's manual. Look for any trapped food particles, bones, fruit pits, or other foreign objects. Clean the filter thoroughly under running water with a brush. This is a common maintenance task, and you can learn more about it in our guide: How Often Should I Clean My Dishwasher Filter? Top Cleaners Reviewed.
- Check the Disposer Area: Some dishwashers have a hard food disposer rather than a simple filter. Shine a flashlight into this area. Look for any visible obstructions. You might need to carefully probe with a non-metallic tool (like a plastic spoon) to feel for anything stuck.
Fixing Debris in the Filter/Disposer
- Remove Debris: Carefully remove any foreign objects you find. For hard food disposers, sometimes a quick manual rotation of the disposer blades (with power off) can dislodge items.
- Regular Cleaning: Make sure to regularly clean your dishwasher filter to prevent future buildup. Running an empty cycle with a dishwasher cleaner like Affresh can also help maintain the interior.
Cost of Repair
Clearing debris from the filter or disposer is a free DIY fix. Regular maintenance prevents this issue.
3. Kinked or Obstructed Drain Hose
The drain hose carries wastewater from the dishwasher to your home's drain system. If this hose becomes kinked, bent, or obstructed internally, it restricts water flow. This forces the drain pump to work harder, leading to straining noises.
How to Diagnose a Drain Hose Problem
Noise Description: A kinked or obstructed drain hose often causes a strained humming, gurgling, or bubbling sound during the drain cycle. The pump may sound like it is struggling, and water may drain slowly or not completely.
- Disconnect Power: Unplug the dishwasher or shut off its circuit breaker.
- Inspect the Visible Hose: Locate the drain hose, which typically connects from the back of the dishwasher to the plumbing under your sink, often near the garbage disposal. Visually inspect the accessible portions of the hose for any obvious kinks or sharp bends.
- Check Under the Sink: Open the cabinet under your sink. Trace the drain hose from where it connects to the sink's plumbing. Make sure it is not pinched by anything, like heavy items in the cabinet or the dishwasher itself if it was recently moved.
- Check for Air Gap (if applicable): Some installations include an air gap on the countertop. Make sure this is not clogged.
- Feel the Hose: Gently squeeze the hose along its length. You might feel a hard blockage inside.
Fixing a Kinked or Obstructed Drain Hose
- Straighten Kinks: Carefully straighten any kinks or bends you find in the hose. Make sure the hose has a gentle slope to aid drainage.
- Clear Internal Obstruction: If you suspect an internal blockage, you may need to disconnect the hose at one or both ends. Have a bucket ready for any residual water. Use a thin, flexible brush or a plumber's snake to clear the obstruction.
- Proper Installation: Make sure the dishwasher is installed correctly, allowing adequate space for the drain hose without pinching.
Cost of Repair
Straightening a kinked hose or clearing an accessible clog is a free DIY fix. Replacing a drain hose, if damaged beyond repair, typically costs $20-$50 for the part. Professional labor for this ranges from $100-$200, plus the service call fee.
Other Potential Causes (Less Common)
While the above issues are most frequent, other components can also cause loud noises during draining.
Motor Bearings
If the drain pump's motor bearings are failing, they can produce a grinding or squealing noise. This is usually a sign that the entire pump assembly needs replacement, as the bearings are not typically serviceable on their own.
Loose Components or Poor Installation
Sometimes, a loose mount for the drain pump or even the dishwasher itself can cause vibrations that amplify normal operating sounds. Make sure the dishwasher is level and securely anchored to the countertop or cabinets. Check all screws holding the pump in place.
When to Call a Professional
If you have checked these common issues and the loud noise persists, or if you are uncomfortable performing the diagnosis and repair yourself, it is time to call a professional appliance technician. They have specialized tools and expertise to identify and fix more complex problems, such as issues with the main circulation pump, motor, or control board. Expect a service call fee of $80-$150, plus labor and parts costs.
Considering a New Dishwasher?
If the cost of repair approaches the price of a new unit, especially for those in smaller living spaces, apartments, dorms, RVs, or boats, a compact countertop dishwasher might be a practical alternative. These units offer convenience without requiring permanent installation.
The COMFEE' Portable Mini Dishwasher Countertop is an ultra-compact solution ideal for small living areas. It features a 1.32-gallon built-in water tank, meaning no hookup is needed. This unit washes 30+ items at a time and offers 6 program options including Normal, Rapid, Hygiene, Fruit, Glass, and an Air Refresh drying mode. It fits under most wall cupboards, requiring more than 19.6 inches of clearance between the countertop and cabinet.
Another excellent option, the COMFEE' Portable Dishwasher Countertop with 5L Built-in Water Tank, also requires no hookup and provides 6 program options. Its Hygiene cycle heats water up to 162℉, making it effective for very dirty dishes, and the Air Refresh mode keeps dishes and the machine dry. Both models use standard dishwasher powders or detergents.
Addressing a loud dishwasher drain cycle promptly can prevent further damage and extend the life of your appliance. Most issues are simple to diagnose and fix with basic tools and a bit of patience.
COMFEE' Portable Mini Dishwasher Countertop with 1.32Gal Built-in Water Tank for Apartments& RVs, No Hookup Needed, 6 Programs, 360° Dual Sp
- Please make sure the distance between your countertop and wall cupboard is more than 19.6" No installation needed: Adding water manually with the water filling guide included in the 1.32Gal built-in water tank, you can p
- Ultra-compact Design: The ultra-compact design allows the dishwasher to wash 30+ items（Max to 9.5-inch plates) at a time while occupying a small area, which is ideal for small houses, apartments, dorms, boats, and camper
- 6 Program Options: NORMAL, RAPID, HYGIENE, FRUIT, GLASS washing programs, and AIR REFRESH extra drying mode meet all your daily needs. Note: Use the standard dishwasher powders or detergents because regular liquid dish s
- High-Temp Hygiene: The Hygiene cycle heats the water up to 162℉, making it great for really dirty dishes and even safe for cleaning your little one's dinnerware.
- Extra Drying & Freshness: The Air Refresh mode circulates air to keep both your dishes and the machine dry and fresh. It helps remove moisture and odors, and if you don't need it, you can turn it off anytime.
COMFEE' Portable Dishwasher Countertop with 5L Built-in Water Tank, No Hookup Needed, 6 Programs, 360° Dual Spray, 192℉
- 6 Program Options: Choose from Normal, Rapid, Hygiene, Fruit, Glass, and Air Refresh modes. All options.
- High-Temp Hygiene: The Hygiene cycle heats the water up to 162℉, making it great for really dirty dishes.
- Extra Drying & Freshness: The Air Refresh mode circulates air to keep both your dishes and the machine dry.
- No Installation Needed: Easy to use to just fill the built-in 5L water tank! You can also hook it up.
