Empty and rinse the tank before each refill

The water tank is where bacteria and mineral buildup start, so cleaning it before you refill is the fastest way to prevent problems. Unplug the humidifier, then remove the tank by twisting it counterclockwise or lifting it straight up—the method depends on your model, but the manual will show which. Empty any remaining water down the sink.

Rinse the inside of the tank with plain tap water, using your hand or a soft cloth to wipe the walls. If you see white or tan crusty deposits (mineral scale from hard water), fill the tank halfway with equal parts white vinegar and water, let it sit for 30 minutes, then scrub gently with a soft brush or cloth and rinse thoroughly until no vinegar smell remains. Do this weekly if you have hard water, or every two weeks with soft water.

Key Takeaways

  • Rinse the water tank with plain water before each refill, and soak it in vinegar and water monthly to remove mineral buildup.
  • The base unit needs weekly cleaning with a damp cloth; use vinegar on mineral deposits but never submerge the base in water.
  • The wick or filter should be rinsed under running water every three to seven days depending on water hardness and replaced every 30 to 60 days.
  • Clean the mist outlet and any removable parts with a soft brush or cloth to prevent clogs that reduce mist output.
  • Always unplug the humidifier before cleaning any part, and let all pieces dry completely before reassembling.

Wipe down the base unit weekly

The base is where mineral deposits collect as water evaporates, and buildup here can clog the mist outlet or damage the motor over time. Unplug the unit, then use a damp cloth to wipe the outside and inside surfaces of the base. Pay special attention to the mist outlet—the opening where vapor comes out—and use a soft brush or old toothbrush to gently clear any white crusty deposits.

If mineral scale is thick, dampen a cloth with equal parts white vinegar and water, wipe the affected areas, let sit for 10 minutes, then scrub gently and wipe clean with a damp cloth. Never submerge the base in water or pour liquid directly into it, as this can damage the electronic components. Dry the base thoroughly with a clean cloth before plugging it back in.

Rinse or replace the wick filter regularly

Levoit humidifiers use a wick filter (also called a filter cartridge) that absorbs water and releases it as mist. This filter traps minerals and bacteria, so it needs regular cleaning. Check your filter every three to seven days—if it looks discolored or has visible deposits, it is time to rinse it.

Remove the filter by twisting or unclipping it from the base, depending on your model. Hold it under cool running water and gently squeeze the filter material to release trapped minerals and debris. Do not wring it or use hot water, as this can damage the fibers. If the filter is still discolored after rinsing, or if it has been in use for 30 to 60 days, replace it with a new one. Levoit sells replacement filters that fit your specific model number, which you can find on the bottom or back of your humidifier.

Clean the mist outlet and removable parts

The mist outlet can become clogged with mineral deposits, reducing the amount of mist your humidifier produces. Unplug the unit and use a soft brush, old toothbrush, or pipe cleaner to gently scrub inside the outlet opening. If buildup is heavy, soak a cloth in vinegar and water, hold it against the outlet for a few minutes, then brush again.

If your model has a removable mist nozzle or cap, unscrew or unclip it and rinse it under running water. Soak it in vinegar and water for 15 minutes if mineral deposits are visible, then brush gently and rinse. Check any other removable parts—some models have a water distribution disk or ring—and rinse these under running water as well. Dry all parts completely before reassembling.

Deep clean with vinegar monthly

Once a month, do a deeper vinegar soak to prevent mineral and bacterial buildup from becoming a problem. Unplug the humidifier and remove the tank and filter. Fill the base with equal parts white vinegar and water until it reaches the fill line, then let it sit for one hour. Use a soft brush to scrub the interior surfaces, paying attention to corners and the mist outlet.

Empty the vinegar solution and rinse the base thoroughly with plain water several times until no vinegar smell remains. Refill with plain water and run the humidifier for a few minutes over a sink or tub to flush out any remaining vinegar, then empty and dry completely. This monthly soak prevents the hard-to-reach internal parts from accumulating scale that can eventually reduce performance or create odors.

Dry all parts completely before reassembling

Moisture left inside the humidifier can encourage mold and bacterial growth, so drying is as important as cleaning. After washing any part, wipe it with a clean, dry cloth and leave it on a clean surface to air-dry for at least 30 minutes before putting it back together. The base should be completely dry inside before you plug it back in.

If you are not going to use the humidifier for more than a few days, empty the tank and base completely, let all parts dry, and store them in a cool, dry place. Before using it again, rinse the tank and filter with plain water to remove any dust that may have collected during storage.

Troubleshooting common cleaning problems

If your humidifier produces less mist than it used to, the mist outlet is likely clogged with mineral deposits. Unplug the unit, soak a cloth in vinegar and water, hold it against the outlet for 10 minutes, then use a soft brush or pipe cleaner to clear the opening. Run the humidifier over a sink for a minute to test the mist output.

If the water smells bad or looks cloudy, the filter is saturated with bacteria and needs replacement. Rinse the tank and base with vinegar and water, replace the filter with a new one, and refill with fresh water. If odor returns within a few days, you may have hard water—in that case, rinse the filter more often (every three days instead of weekly) and do the monthly vinegar soak every two weeks instead.

If mineral scale keeps returning quickly, your water is very hard. Consider using distilled water instead of tap water—this nearly eliminates mineral buildup and extends the life of your filter. Distilled water costs a few dollars per gallon and makes cleaning much easier over time.

Frequently Asked Questions

Can I use bleach to clean my Levoit humidifier?

No. Bleach can damage plastic parts and leave residue that gets into the mist you breathe. White vinegar and water is safe and just as effective for mineral and bacterial buildup. If you are concerned about bacteria, the vinegar soak kills most common strains, and replacing the filter regularly prevents regrowth.

How often should I replace the filter?

Most Levoit filters last 30 to 60 days with regular use and normal water hardness. If you have hard water or use the humidifier constantly, replace it every 30 days. If you rinse it frequently and have soft water, it may last closer to 60 days. When the filter looks discolored or no longer absorbs water evenly, it is time for a new one.

What if my humidifier still smells bad after cleaning?

Empty the tank and base completely, then fill the base with equal parts vinegar and water and let it soak for two hours. Scrub all interior surfaces with a soft brush, rinse thoroughly several times, and replace the filter with a new one. If odor returns within a week, switch to distilled water—tap water bacteria can regrow quickly in hard water mineral deposits.

Is it safe to use vinegar on all parts of the humidifier?

Vinegar is safe on the tank, filter, and removable plastic parts. Avoid pouring vinegar directly into the base unit or soaking the base for more than one hour, as prolonged exposure can affect electronic components. Wipe the base with a vinegar-soaked cloth instead, or fill it with the solution and let it sit for one hour, then empty and rinse when ready.

Can I clean the humidifier while it is running?

No. Always unplug the humidifier before cleaning any part. Cleaning while it is plugged in risks electric shock and can damage the motor or electronic controls. Let the unit cool for a few minutes after use before you start cleaning.