Speed Queen Biofilm and Mold Build-up

Washer has a strong musty or moldy odor inside the drum.

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Possible Causes

Frequent cold washes, Excess detergent use, Poor drainage leaving residual water, Door kept closed between cycles (front-load)

How to Fix / Troubleshooting

Safety: Use cleaning chemicals in a well-ventilated area and follow product instructions.

  • 1. Run cleaning cycle: Use a washer cleaner tablet or a cup of white vinegar with a hot wash cycle (no clothes).
  • 2. Clean door boot (front-load): Wipe the gasket folds with a mild bleach solution to remove mold.
  • 3. Leave door/lid open: After each use, leave the door or lid ajar to allow drying.
  • 4. Check drain and pump: Ensure the washer drains fully; standing water can contribute to odor. Clean pump filter if equipped.
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Repair Difficulty

Very Easy 1/5
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