You open the door to your washer, ready to pull out a load of fresh, clean laundry, and instead, you’re hit with a wave of musty, funky air. It’s a smell you can’t ignore, and suddenly, your “clean” clothes don’t seem so clean anymore. If your Washing Machine Smells Like Mold, you’re not alone. Believe me, it’s one of the most common complaints I hear, but the good news is that it’s completely fixable.
Let’s dive in and get that machine smelling fresher than a spring meadow. We’ll uncover why this happens, how to banish the odor for good, and most importantly, how to keep it from ever coming back.

Why Your Washing Machine Smells Like Mold in the First Place
Before we roll up our sleeves, it’s helpful to understand the enemy. A washing machine is the perfect storm for mold and mildew growth. Think about it: it’s dark, it’s damp, and leftover soap scum and dirt provide the perfect food source. It’s like a five-star resort for fungus.
Here are the main culprits behind that unpleasant odor:
- The Rubber Gasket (For Front-Loaders): This is ground zero. The rubber seal around the door of a front-loading machine is fantastic at keeping water in, but it’s also a master at trapping it. The folds and crevices collect water, lint, and grime, creating a breeding ground for mildew.
- Soap Scum and Detergent Buildup: Using too much detergent or fabric softener is a classic mistake. You might think more soap means cleaner clothes, but your machine can’t always rinse it all away. That leftover residue builds up inside the drum and hoses, feeding the mold that causes your washing machine smells like mold.
- Leaving Wet Clothes Inside: We’ve all done it. You put a load in and forget about it for a few hours… or a day. A drum full of damp clothes is an open invitation for mildew to set up shop.
- Trapped Debris in the Filter: Most modern machines have a drain pump filter that catches lint, coins, and other small items. If this isn’t cleaned regularly, it can become a sludgy, smelly mess.
The Deep Clean: A Step-by-Step Battle Plan
Alright, enough talk. It’s time for action. We’re going to perform a deep clean that will reset your machine and eliminate that odor. Grab some white vinegar, baking soda, and a couple of old towels.
Step 1: Clean the Rubber Gasket and Door Seal
This is especially critical for front-load washers.
- Mix a solution of equal parts white vinegar and warm water in a spray bottle or a bowl.
- Gently pull back the rubber gasket. You’ll likely see some black, slimy gunk. Don’t be alarmed; this is the source of the problem.
- Spray the vinegar solution generously into the folds of the gasket. Use a microfiber cloth or an old toothbrush to scrub away all the visible mold and mildew.
- Pay close attention to the bottom of the seal where water tends to pool.
- Once you’ve scrubbed it clean, wipe it down with a dry cloth to remove as much moisture as possible.
Step 2: Tackle the Detergent and Fabric Softener Dispenser
This drawer is another sneaky spot for buildup.
- Remove the dispenser drawer completely. Most have a tab you can press to release it. Check your user manual if you’re unsure.
- Take the drawer to a sink and wash it thoroughly with hot, soapy water. Use a small brush to get into all the nooks and crannies.
- If there’s stubborn buildup, let it soak in a sink of warm water and vinegar for 30 minutes before scrubbing.
- While the drawer is out, look inside the machine cavity where the drawer sits. You might find more gunk in there. Wipe it clean with your vinegar solution.
- Dry the drawer completely before putting it back.
Step 3: Sanitize the Drum and Hoses
Now it’s time to clean the inside of the machine—the parts you can’t see. This will kill any lingering mold spores and flush out the system.
- Pour two cups of white vinegar directly into the washing machine drum.
- Add half a cup of baking soda directly into the drum as well. You’ll see some fizzing, which is perfectly normal.
- Run the machine on its longest, hottest cycle. The “Tub Clean” or “Sanitize” cycle is ideal if you have one. Do not add any clothes or detergent.
- The combination of hot water, vinegar (which disinfects and breaks down mineral deposits), and baking soda (which neutralizes odors) will work wonders.
While vinegar and baking soda are fantastic household staples, sometimes you need a bit more power for serious cases. If the smell persists, consider using a dedicated washing machine cleaner. These tablets or powders are specifically formulated to dissolve residue and kill odor-causing bacteria. Just follow the package directions.
“The single biggest mistake I see homeowners make is using too much High-Efficiency (HE) detergent. These formulas are super concentrated. Using more than the recommended amount doesn’t get clothes cleaner; it just creates a residue film inside the drum that mold loves to eat.” – John Carter, Certified Appliance Technician
How to Prevent That Moldy Smell from Ever Coming Back
You’ve won the battle, but now you need to win the war. Preventing the problem is all about creating good habits. If you follow these simple rules, you’ll likely never have a washing machine smells like mold problem again.
- Leave the Door Ajar: After every single wash, leave the washing machine door open. This is the most important step. It allows air to circulate and the drum to dry out completely, preventing that damp environment where mold thrives.
- Remove Clothes Promptly: Make it a habit to transfer your wet laundry to the dryer or clothesline as soon as the cycle is finished.
- Use the Right Detergent (and the Right Amount): If you have a High-Efficiency (HE) washer, you must use HE detergent. Regular detergent creates way too many suds that the machine can’t rinse out. Measure your detergent carefully according to the load size. More is not better.
- Wipe Down the Gasket: For front-loader owners, give the rubber gasket a quick wipe with a dry cloth after your last load of the day. It takes ten seconds and makes a huge difference.
- Run a Monthly Maintenance Clean: Once a month, run an empty, hot cycle with either vinegar or a washing machine cleaner. Think of it as a spa day for your appliance. It keeps everything fresh and prevents buildup.
- Clean the Drain Pump Filter: Every few months, check and clean your machine’s filter. You’ll be surprised what you find in there. Consult your manual for its location (it’s usually a small door on the front-bottom of the machine).
What if My Top-Loading Washing Machine Smells Bad?
While front-loaders are more notorious for moldy smells, top-loaders are not immune. The buildup of soap scum and fabric softener can still occur around the agitator and under the rim of the tub. The same cleaning process applies: run a hot cycle with vinegar and baking soda to sanitize the tub and flush the system.
Frequently Asked Questions (FAQ)
Q: Can I use bleach instead of vinegar to clean my washing machine?
A: Yes, you can use bleach, but never mix it with vinegar. Mixing bleach and vinegar creates toxic chlorine gas. If you use bleach, add one cup to the drum and run a hot cycle. Then, run another plain rinse cycle to ensure all the bleach is gone before washing clothes. Vinegar is generally a safer and more environmentally friendly first choice.
Q: How often should I perform a deep clean on my washer?
A: A full deep clean (gasket, dispenser, and tub) should be done every 3 to 6 months, or whenever you notice an odor returning. The monthly maintenance wash with vinegar should be enough to keep things fresh in between deep cleans.
Q: I’ve cleaned my machine thoroughly, but my washing machine smells like mold still. What now?
A: If the smell persists after a thorough cleaning, the problem might be deeper in the system, such as a clog in the drain hose or pump. At this point, it may be time to consult a professional appliance repair technician to diagnose the issue.
Q: Will the vinegar smell stick to my clothes?
A: No. After the cleaning cycle and an additional rinse, the vinegar smell will be completely gone. Your next load of laundry will come out smelling fresh, not like a salad.
Q: Does the hardness of my water affect my washing machine?
A: Absolutely. Hard water contains more minerals, which can lead to faster buildup of limescale and soap scum. If you have hard water, running a monthly cleaning cycle with vinegar is even more important, as the acid helps dissolve those mineral deposits.
A Breath of Fresh Air for Your Laundry Room
Dealing with a machine that washing machine smells like mold is a frustrating experience, but it’s a problem with a clear solution. By following a simple routine of deep cleaning and preventative maintenance, you can ensure your washer stays fresh and your clothes come out truly clean every time. You’ve now got the knowledge and the battle plan to keep your laundry routine odor-free for good. Now, go enjoy that fresh-laundry smell—you’ve earned it.