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How do I clean the filter on my lower dishwasher?

Published in Dishwasher Maintenance 5 mins read

Cleaning your dishwasher filter is a straightforward process crucial for maintaining optimal wash performance and preventing unpleasant odors.

How to Clean Your Dishwasher Filter

To clean your dishwasher filter effectively, you'll need to remove it, soak it in a mixture of hot water and dishwashing liquid, scrub away debris, rinse thoroughly, and then reinstall it. This simple maintenance step ensures your dishes come out sparkling clean every time.


Why Cleaning Your Dishwasher Filter is Essential

Your dishwasher filter, typically located at the bottom of the tub, traps food particles and debris to prevent them from recirculating during a wash cycle and potentially clogging the drain or re-depositing on your clean dishes. Over time, this trapped gunk can lead to:

  • Poor Wash Performance: Dishes may come out with food bits or a cloudy film.
  • Unpleasant Odors: Accumulated food particles can decompose and cause your dishwasher to smell.
  • Drainage Issues: A severely clogged filter can hinder proper water drainage.

Regular cleaning is key to a long-lasting and efficient appliance.

Tools You'll Need

Before you start, gather these basic supplies:

Item Purpose
Dishwashing Liquid For cutting grease and food residue
Warm Water For soaking and rinsing
Soft Brush or Sponge To gently scrub away stubborn grime
Microfiber Cloth For wiping down the filter housing
Old Toothbrush (Optional) Great for reaching small crevices on the filter

Step-by-Step Guide to Cleaning Your Dishwasher Filter

Follow these steps to thoroughly clean your dishwasher filter:

  1. Locate the Dishwasher Filter:

    • Empty the dishwasher of all dishes and remove the lower spray arm and the bottom dish rack. This will give you clear access to the tub floor.
    • The filter is usually a cylindrical or flat mesh screen located in the center or back of the dishwasher's interior floor. It might have a fine mesh screen (the main filter) and a coarser filter cup beneath it.
  2. Remove the Filter:

    • Depending on your dishwasher model, the filter will either twist counter-clockwise to unlock and lift out, or it may have clips that need to be released. Refer to your dishwasher's user manual if you're unsure about the specific removal method for your model.
    • Carefully lift the filter components out of the dishwasher.
  3. Prepare a Soaking Solution:

    • In a sink or small basin, mix hot water with a few drops of dishwashing liquid. The hot water helps to break down grease, and the soap will loosen food particles.
  4. Soak and Scrub the Filter:

    • Submerge the removed filter components in the hot, soapy water. Let them soak for about 10-15 minutes. This will soften any hardened food debris.
    • After soaking, use a soft brush, sponge, or an old toothbrush to gently scrub away all food particles, grease, and any slimy buildup from both the fine mesh and coarser components. Pay close attention to the nooks and crannies.
  5. Rinse Thoroughly:

    • Rinse all filter parts under running hot water until no visible debris or soap residue remains. Ensure the water flows freely through the mesh screens.
  6. Wipe Down the Filter Housing:

    • While the filter is out, use a damp microfiber cloth to wipe down the area where the filter sits in the dishwasher tub. This housing can also accumulate grime.
  7. Reinstall the Filter:

    • Carefully place the clean filter components back into their designated spot in the dishwasher.
    • Twist clockwise or re-secure any clips until the filter is firmly locked in place. Ensure it's properly seated to prevent debris from bypassing it.
    • Replace the bottom rack and lower spray arm.

How Often Should You Clean Your Dishwasher Filter?

The frequency of cleaning depends on how often you use your dishwasher and the type of food you wash. A good general guideline is:

  • Weekly or Bi-weekly: For daily dishwasher users or those who don't pre-rinse dishes thoroughly.
  • Monthly: For less frequent use or if you always scrape plates clean before loading.

If you notice lingering odors or less effective cleaning, it's always a good idea to check and clean the filter, regardless of the schedule.

Additional Tips for a Sparkling Dishwasher

Beyond the filter, consider these practices for overall dishwasher health:

  • Scrape Plates: Always scrape large food particles off plates before loading to minimize the load on your filter.
  • Use a Dishwasher Cleaner: Periodically run an empty cycle with a specialized dishwasher cleaner to remove mineral buildup and unseen grime. Learn more about cleaning your dishwasher tub.
  • Check Spray Arms: Ensure the spray arm holes aren't clogged. Use a toothpick to clear any blockages.
  • Use Rinse Aid: Rinse aid helps water sheet off dishes, preventing spots and improving drying.
  • Clean the Gasket: Wipe down the rubber gasket around the dishwasher door regularly to prevent mold and mildew buildup.

By making filter cleaning a routine part of your kitchen maintenance, you'll ensure your dishwasher continues to deliver impeccably clean dishes cycle after cycle.