Clean the rubber seal and drum monthly to prevent mold and odors

Samsung front load washers trap moisture and detergent residue in the rubber gasket around the door and inside the drum, creating the perfect environment for mold and mildew. These grow quickly and cause that sour smell that transfers to your clothes. The good news is that cleaning takes about 20 minutes and requires only items you likely have at home.

The rubber seal is where most buildup happens because water sits there after every wash. You'll see black or pink spots, slime, or debris caught in the folds. Cleaning it monthly—or every two weeks if you live in a humid climate—stops the problem before it spreads to your clothes and drum.

Key Takeaways

  • Pull back the rubber gasket and wipe the folds with a cloth dampened in white vinegar or a 1:1 mix of vinegar and water to remove mold, mildew, and detergent buildup.
  • Run a cleaning cycle using the Tub Clean or Self Clean function (depending on your model) once a month, with or without a commercial washer cleaner.
  • Leave the door open between washes to let the drum and gasket dry completely, which stops mold from returning.
  • Use the correct amount of detergent—too much leaves residue that feeds mold growth—and switch to high-efficiency (HE) detergent if your machine requires it.
  • If odor returns within a week of cleaning, the problem may be in the drain pump filter, which you can access and rinse yourself.

Step-by-step: cleaning the rubber gasket

Start with the door open and the machine empty. Grab a clean cloth or old towel and a spray bottle filled with white vinegar (or a 50/50 mix of vinegar and water). You can also use a commercial mold and mildew spray, but vinegar works just as well and costs less.

Pull the rubber gasket gently toward you to expose the folds where debris hides. Spray the vinegar solution directly into the crevices and wipe thoroughly with your cloth, working your way around the entire seal. Pay special attention to the bottom of the gasket, where water pools and mold grows fastest. You may need to go over the same spots twice if buildup is heavy. Once you've wiped the whole gasket, spray it one more time and let it air dry with the door open.

If you find stubborn black spots that won't come off with vinegar, make a paste of baking soda and water, explore it to the spot, let it sit for 10 minutes, and scrub with an old toothbrush. Rinse with a damp cloth and dry.

Running the Tub Clean or Self Clean cycle

Samsung front loaders have a built-in cleaning cycle designed to clean the drum itself. The name varies by model—some call it Tub Clean, others Self Clean, and some use Drum Clean. Check your user manual or the control panel to find the exact name on your machine.

To run the cycle, start with an empty drum and closed door. Press the cycle button and scroll to find Tub Clean (or your model's equivalent). Some machines let you add a commercial washer cleaner tablet before starting; others work without it. If your manual recommends a cleaner, use it—brands like Affresh or Tide Washing Machine Cleaner are made for this purpose. If you prefer not to buy a cleaner, the cycle alone will help, though vinegar in the drum works too. Start the cycle and let it run completely; it typically takes 30 to 40 minutes.

Run this cycle once a month, or every two weeks if you notice odor returning quickly. If you use the machine heavily (more than one load per day), monthly cleaning may not be enough—move to every two weeks.

Cleaning the drain pump filter

If odor comes back within days of cleaning the gasket and running a tub clean cycle, the problem is likely in the drain pump filter. This small screen catches lint, coins, and debris and sits at the bottom front of the machine behind a small access panel. When it clogs, water can't drain fully and sits in the pump, creating a breeding ground for bacteria and mold.

Locate the access panel at the bottom of your Samsung washer—it's usually a small rectangular cover on the front. Open it by pressing or unclipping (check your manual for the exact method on your model). You'll see a small cylindrical filter. Place a shallow pan or towel underneath to catch water that will spill out. Grip the filter and turn it counterclockwise to unscrew it, then pull it out.

Rinse the filter under warm running water, using an old toothbrush to scrub away lint and debris. If it's heavily clogged, soak it in warm water for 10 minutes first. Once clean, screw it back in clockwise until it's snug—don't over-tighten. Close the access panel and run a short cycle to make sure water drains properly.

Preventing mold and odor between cleanings

The single most effective step is leaving the door open after every wash. Moisture trapped inside the drum and gasket is what allows mold to grow. By opening the door when ready after the cycle ends and leaving it open for at least an hour (or longer if possible), you let air circulate and dry everything out. Many people leave their door open all day or overnight, which works even better.

Use the correct amount of detergent. High-efficiency (HE) machines like Samsung front loaders use much less detergent than older top loaders—usually 1 to 2 tablespoons per load, not a full cap. Too much detergent leaves residue in the drum and gasket, which feeds mold growth and causes odor. If you're using regular detergent instead of HE detergent, switch when ready; regular detergent creates far more suds and residue in front loaders.

Wipe the gasket dry after each load if you're not leaving the door open. This takes 30 seconds and removes the moisture mold needs to grow. It's especially helpful if you run multiple loads in a row or live in a very humid climate.

When to call a Samsung technician

If you've cleaned the gasket, run the tub clean cycle, cleaned the drain filter, and the odor returns within a few days, the problem may be deeper in the machine—in the drain hose, pump, or tub itself. At that point, contact Samsung support or a local appliance repair technician. Do not attempt to disassemble the machine further yourself.

If water is leaking from the access panel after you've cleaned the filter, the filter may not be seated correctly. Unscrew it, check that the rubber seal is clean and intact, and screw it back in firmly. If it still leaks, the seal may be damaged and will need replacement by a technician.

Frequently Asked Questions

Can I use bleach to clean the gasket instead of vinegar?

Bleach works but can damage the rubber gasket over time, especially if used regularly. Vinegar is gentler and just as effective. If you prefer bleach, dilute it heavily (1 part bleach to 10 parts water) and rinse thoroughly afterward. Never mix bleach with other cleaners.

How often should I run the Tub Clean cycle?

Once a month is standard for normal use. If you wash more than one load per day, use a lot of detergent, or live in a humid climate, run it every two weeks. If odor returns quickly even after cleaning, increase frequency to weekly until the problem stops.

What if my Samsung washer doesn't have a Tub Clean button?

Older Samsung models may not have a dedicated cleaning cycle. Instead, run a hot water cycle with no clothes and add two cups of white vinegar to the detergent dispenser, or use a commercial washer cleaner tablet in the drum. This achieves the same result.

Is it safe to use vinegar in my Samsung washer?

Yes. White vinegar is safe for all parts of the machine, including rubber seals and stainless steel drums. Use it regularly without worry. Avoid vinegar only if your manual specifically warns against it, which is rare.

Why does my washer smell even after I clean it?

The smell usually returns because the door is being closed when ready after washing, trapping moisture. Leave the door open for at least an hour after each load. If the smell comes back within days despite leaving the door open, the drain filter is likely clogged—clean it as described above.