Washing Machine Smells Like Mildew? What to Do

If your washing machine smells like mildew, the problem is usually caused by moisture, detergent residue, and poor airflow inside the washer. Front-load washers are especially prone to this because water can collect around the rubber door gasket, detergent drawer, and drum after each load.

At EAS Repair & Installation, we help homeowners with washing machine repair and appliance service across Toronto and the GTA. If your washer has a persistent bad smell, there are a few things you can check before it turns into a bigger problem.

Why a Washing Machine Smells Like Mildew

A washer can develop a mildew smell when warm moisture stays trapped inside the drum, door gasket, or detergent compartment. Over time, that damp environment can lead to buildup and unpleasant odours.

Common causes include:

• Moisture trapped in the door gasket
• Detergent or fabric softener buildup
• Standing water left in the drum or drain area
• Leaving the washer door closed all the time
• Using too much detergent
• Not cleaning the detergent dispenser regularly

How to Clean a Washer That Smells Like Mildew

If your washer smells musty, start with a basic cleaning routine using simple household supplies and a hot cleaning cycle if your washer allows it.

1. Clean the Washer Drum

Run an empty hot wash cycle using white vinegar or a washer cleaner approved for your appliance. This can help loosen residue and freshen the drum.

Always check your owner’s manual first, as some manufacturers recommend specific cleaning products or cycle settings.

2. Clean the Door Gasket

Front-load washers often develop odours around the rubber door gasket because moisture and debris collect inside the folds.

• Pull back the gasket gently
• Wipe away residue with a soft cloth
• Use warm soapy water or a manufacturer-safe cleaner
• Dry the area thoroughly when finished

3. Clean the Detergent Dispenser

The detergent drawer can collect soap residue, softener buildup, and moisture over time. Remove the dispenser if possible and wash it with warm water before reinstalling it.

4. Wipe Down the Interior

After the cleaning cycle is complete, wipe the drum, door seal, and other damp areas with a clean dry cloth. Removing leftover moisture helps reduce the chance of the smell returning quickly.

How to Help Prevent Mildew Smells in the Future

Regular maintenance can help keep your washer smelling fresher between deep cleanings.

• Leave the washer door ajar after use so air can circulate
• Wipe the door gasket dry after washing
• Clean the detergent dispenser regularly
• Use the correct amount of detergent
• Use HE detergent if your washer requires it
• Run a cleaning cycle periodically

When the Smell Keeps Coming Back

If your washing machine smells like mildew even after cleaning, there may be a deeper issue such as drainage problems, hidden buildup, standing water, or another mechanical concern. In that case, professional service may help identify the source more accurately.

Persistent odours may also show up alongside other symptoms like slow draining, leaking, or poor washing performance.

Book Washing Machine Repair

If your washer still smells bad after cleaning or is showing other signs of trouble, contact EAS Repair & Installation for dependable service across Toronto and the GTA.

EAS Repair & Installation
Phone: (905) 773-3668
Email: info@easrepair.ca
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