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Kenmore Washing Machines Smells Bad (Musty or Mildew): How to Fix It Yourself

A smelly Kenmore washer is caused by mold and mildew growing in trapped moisture — usually in the door seal, detergent dispenser, or drain filter. A deep clean cycle plus changing a few habits will eliminate the odor completely.

Easy20-40 minutesParts: $0–$10

Tools Needed

Spray bottleOld toothbrush or soft brushTowelsMeasuring cup

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⚠️ Safety First

  • Do not mix bleach with vinegar — the combination creates toxic fumes.
  • Use either bleach or vinegar, never both in the same cleaning cycle.
  • Ventilate the laundry area while cleaning.

Before You Start

Parts You May Need

Washing machine cleaner tablets (optional)

~$5–$10

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Step-by-Step Repair

  1. Step 1 of 5
    1

    Clean the door seal

    Pull back the rubber door gasket and wipe inside all the folds with a cloth soaked in a 50/50 mix of white vinegar and water. You will likely find dark mildew buildup and sometimes small items trapped in there. Scrub stubborn spots with an old toothbrush.

  2. Step 2 of 5
    2

    Clean the detergent dispenser

    Pull the dispenser drawer completely out (press the release tab if your model has one). Soak it in hot soapy water for 10 minutes, then scrub all compartments. Wipe the cavity it sits in with a vinegar-soaked cloth.

  3. Step 3 of 5
    3

    Run a hot cleaning cycle

    With the washer empty, add 2 cups of white vinegar directly into the drum. Select the hottest and longest cycle available (or the dedicated tub clean cycle if your model has one). Let it run completely.

  4. Step 4 of 5
    4

    Clean the drain filter

    Open the small panel at the bottom-front of the washer. Place towels under it, unscrew the filter cap, and remove any trapped debris. Rinse the filter under running water. Reinstall it and close the panel.

  5. Step 5 of 5
    5

    Prevent future odor

    After every wash, leave the door slightly open to let the drum dry out. Switch to HE detergent if you are not already using it — regular detergent creates excess suds that leave residue. Run a monthly cleaning cycle with vinegar or a washing machine cleaner tablet.

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If That Didn't Work

  • Clogged standpipe causing sewer gas to back up
  • Drain hose pushed too far into the standpipe
  • Old rubber door seal that has permanently absorbed odor

When to Call a Professional

If the smell persists after a deep clean, the door boot seal may be permanently moldy inside the rubber and need replacing ($80–$150 installed). If you smell sewage rather than mildew, a plumber should check your standpipe connection.

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Disclaimer: This guide is for informational and educational purposes only and does not constitute professional repair advice. All repairs are performed at your own risk. RepairItFree.com is not liable for any personal injury, property damage, device damage, voided warranties, or other losses resulting from the use of this information.

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