A washing machine mildew smell can make freshly washed clothes smell unpleasant. This odor often comes from moisture, detergent residue, or dirt trapped inside the washer. The good news is that regular cleaning and proper care can help remove the smell and prevent it from returning.
The good news is that you can often reduce the smell by cleaning the right areas and changing a few laundry habits. However, the best way to clean your washer depends on its type and your washer’s manual.
This guide explains why your washer smells like mildew, how to clean it, and how to stop the smell from coming back.
Table of Contents
Why Does My Washer Smell Like Mildew?
A washer may smell musty when moisture and residue remain inside the drum or other parts of the machine. These areas can become difficult to dry completely, especially when the door stays closed between loads. A washing machine mildew smell often develops when moisture, detergent residue, and dirt build up inside the washer.
Several common issues can contribute to the problem.
1. Moisture Inside the Washing Machine
Water can remain around the door seal, inside the detergent drawer, or in other damp areas after a wash. When these areas do not dry properly, they can develop an unpleasant odor.
This is more likely when the washer remains closed for long periods after a cycle finishes.
2. Detergent and Fabric Softener Buildup
Using more detergent than recommended does not necessarily make clothes cleaner. Extra detergent and fabric softener can leave residue inside the machine.
Over time, this residue may collect dirt and contribute to a musty smell. Using the amount recommended for your washer and the size of your load can help reduce buildup.
3. A Dirty Door Seal
Front-load washing machines have a rubber door gasket that helps keep water inside the washer. Moisture, lint, and small pieces of debris can collect in its folds.
If you leave the gasket damp or skip cleaning it when needed, it may develop an unpleasant odor. Check the folds carefully for visible residue and follow the the cleaning instructions in your manual
4. A Dirty Detergent Drawer
Detergent drawers can collect soap residue, fabric softener, and moisture. Check your washer’s manual to learn how to remove and clean the drawer safely.
Remember to clean the compartment around the drawer as well, if your manual permits it.
5. Infrequent Washer Cleaning
Some washing machines have a dedicated cleaning cycle designed to remove residue from the drum and internal areas. Follow the manual’s instructions for this cycle to help prevent buildup and odors.
Check your owner’s manual for the recommended cleaning frequency and the type of washer cleaner approved for your model.
How to Remove Mildew Smell from a Washer
If your washing machine smells like mildew, start with a careful inspection and cleaning. You may not need to clean every component, but checking the common problem areas can help you find the source.
Step 1: Check Your Washing Machine Manual
Before using a cleaning product, read your washer’s manual. Different washing machines may require different cleaning methods and products.
Do not assume that a cleaning method suitable for one model is safe for every washer.
For additional guidance, read Whirlpool’s guide to removing washer odors for tips on washer cleaning and maintenance.
Step 2: Clean the Door Gasket
If you have a front-load washer, inspect the rubber gasket around the door.
- Turn off the washer and follow the your washer’s safety instructions
- Check the folds of the gasket for lint, hair, and visible residue.
- Use a soft cloth and the cleaner recommended by the manufacturer.
- Wipe the accessible surfaces gently without pulling or damaging the seal.
- Dry the area with a clean cloth.
Avoid sharp tools, abrasive scrubbers, or harsh chemicals that could damage the rubber.
Top-load washers may not have the same type of front door gasket, so inspect the areas specified in your owner’s manual instead.
Step 3: Clean the Detergent Drawer
Soap residue inside the dispenser can contribute to a musty smell.
If your model has a removable drawer, remove it according to the manual. Clean the accessible parts with a suitable cleaner, rinse them if instructed, and allow them to dry before putting them back.
Use a soft brush only where appropriate. Only remove the drawer if your washer’s manual says it is removable. Never force it out.
Step 4: Run the Recommended Washer-Cleaning Cycle
Many washing machines have a cycle labelled Clean Washer, Tub Clean, or something similar.
To use it correctly:
- Check the manual for the recommended cleaning procedure.
- Use the washer cleaner specified in your manual, if required.
- Follow the instructions for the correct amount and placement of the product.
- Run the recommended cycle without laundry unless the manual says otherwise.
Do not add ordinary laundry detergent unless the manufacturer specifically instructs you to do so.
Important: Never mix bleach with vinegar, ammonia, or other cleaning products. Mixing cleaners can release dangerous fumes. Use only compatible products according to their labels and your washer’s instructions
Step 5: Check the Drain Filter if Your Washer Has One
Some washing machines have a user-accessible drain pump filter. Lint, coins, and other debris can collect there, and trapped water or residue may contribute to odors.
Not every model has a filter that users can safely access. Consult your manual before opening any filter compartment.
If the procedure involves draining water, prepare for possible spills and follow the safety instructions carefully. If you are unsure how to access the filter, contact a qualified technician.
How to Get Rid of Mildew Smell in a Washing Machine Naturally
Some people prefer to clean their washer using household products. However, natural does not automatically mean safe for every machine.
Before using vinegar, baking soda, or any other household product, check whether the manufacturer permits it. Some products may damage seals, leave residue, or interfere with the recommended cleaning process.
Start by removing visible dirt. Clean the areas you can reach, then run the cleaning cycle listed in your washer’s manual.Copy replacement
Avoid combining household cleaners. Never mix vinegar with bleach. Do not mix cleaning products, as this can release dangerous fumes.
If the odor remains after appropriate cleaning, investigate other possible causes instead of repeatedly adding more products.
Why Does My Washing Machine Still Smell After Cleaning?
Sometimes, your washing machine still smells after you clean the drum. This may happen because the source of the odor is somewhere else.
If your washer also has water-related problems, read our guide on washing machine not filling with water.
Consider these possibilities:
- Residue remains in hidden areas: The detergent drawer, door gasket, or another accessible area may need attention.
- The machine stays damp: Closing the door immediately after a cycle can prevent moisture from escaping.
- Check the drain system for standing water, drainage problems, or residue. These issues may cause the smell to remain.
- The cleaning method was unsuitable: The washer may require a particular cleaner or cleaning cycle.
- A lasting smell may point to a machine problem. Contact a qualified technician if your washer also drains poorly or shows other signs of a fault.”Copy replacement
If the smell returns, or your washer leaks or drains poorly, contact the manufacturer or a qualified technician.
How to Prevent Washing Machine Mildew Smell
Once the odor has been addressed, a few regular habits can help keep your washer fresher.
Regular maintenance can also help extend your washer’s life. Read our guide on how long washing machines last to learn more.
Regular cleaning and proper ventilation can help prevent a washing machine mildew smell from returning.
Leave the Door Open When Appropriate
After a cycle, allow the inside of the washer to dry. If the manufacturer permits it, leave the door slightly open when the machine is not in use.
Keep the area safe and make sure children and pets cannot access the open machine.
Use the Recommended Amount of Detergent
Follow the detergent label and your washing machine’s instructions. The correct amount depends on the product, load size, and washing conditions.
Using excess detergent can increase residue rather than improve cleaning.
Remove Wet Laundry Promptly
Leaving wet clothes in the washer for a long time can result in unpleasant odors. Move laundry to the dryer or drying area soon after the cycle finishes.
If clothes already smell musty, check the cause before simply adding more detergent.
Wipe Damp Areas When Needed
For front-load washers, wiping the door gasket after use can help remove moisture. Check the detergent drawer and other accessible areas occasionally, too.
There is no need to scrub every part after every load. Focus on the areas where water and residue tend to collect.
Clean Your Washer on a Regular Schedule
Follow the cleaning schedule recommended by the manufacturer. Some models prompt users to run a cleaning cycle after a certain number of loads.
Regular maintenance can help reduce residue and keep the machine working as intended.
When Should You Call a Washing Machine Technician?
Routine cleaning can remove musty odors, but some smells have other causes.
Consider professional help if:
- The odor continues after you have followed the recommended cleaning procedure.
- Water remains in the drum or the washer does not drain properly.
- You notice leaks or signs of damage around the machine.
- The smell seems to come from the drain system rather than the washer itself.
- You notice an unusual burning or electrical smell.
Stop using the washer if you suspect an electrical fault, and seek qualified assistance. Do not take apart internal parts unless you have the proper training and your washer’s manual allows it.
Frequently Asked Questions
Why does my washing machine smell musty even after cleaning?
Residue in the door gasket, detergent drawer, or other uncleaned areas may cause the odor. A drainage issue or an unsuitable cleaning method could also be responsible. Check your manual and investigate persistent odors rather than repeatedly adding cleaning products.
Can a mildew smell make my clothes smell bad?
Yes. If the washer has a persistent musty odor, freshly washed clothes may pick up an unpleasant smell. Cleaning the washer, removing laundry promptly, and allowing the drum to dry can help address the problem.
How often should I clean my washing machine?
The recommended frequency varies by model and usage. Follow your washer’s manual for the cleaning cycle and other care steps. If you notice residue or an odor, inspect the accessible areas and clean them using an approved method.
Should I leave my washer door open after use?
If your manufacturer permits it, leaving the door slightly open between loads can help moisture escape. Make sure the area is safe for children and pets.
Can I use vinegar to remove a mildew smell from my washer?
Do not assume vinegar is suitable for every washing machine. Some manufacturers advise against particular household cleaners. Check your manual before using vinegar, and never mix it with bleach or other cleaning products.
Final Thoughts
A mildew smell often comes from moisture, detergent residue, or dirt in areas that stay damp. Start by checking the door seal and cleaning the detergent drawer. Then run the recommended washer-cleaning cycle.
Good laundry habits can also make a difference. Use the right amount of detergent and remove wet clothes promptly. Let the washer dry between loads when appropriate.
If the smell returns, or your washer leaks or drains poorly, contact the manufacturer or a qualified technician. Finding the underlying cause is more effective than repeatedly masking the odor.
With regular cleaning and proper care, you can help prevent a washing machine mildew smell from returning.