How to clean a humidifier and prevent it from growing mold
You should be cleaning your humidifier every month at least, according to experts we spoke with. Otherwise, it can grow mold and present health risks.
Tips for cleaning different types of humidifiers
Since there are humidifiers that create mists in different ways (such as cool-mist and warm mists) some of them have parts that need to be cleaned that others don’t. Plus, some humidifiers require replacement filters.
- Evaporative humidifiers: These types of humidifiers have an internal filter, such as a wick filter (mesh-like filter that resembles a sponge). If your humidifier’s filter is reusable and relatively new, you can clean it by soaking it in vinegar and water for 30 minutes. Then, use a nylon bristle brush to scrub off any residue. Let dry before replacing. If your humidifier has a wick filter, it’s best to replace it with a new one, such as the Durabasics Premium Humidifier Filter, and buy multi-packs of them.
- Ultrasonic/impeller humidifiers: An ultrasonic humidifier, which doesn’t have a filter, uses ultrasonic vibrations to release water into the air. Maker recommends focusing on descaling the inside, especially if you use hard unfiltered water with a lot of mineral deposits for your humidifier. The Durgol Universal Multipurpose Descaler can help remove any scaling in your humidifier.
- Steam vaporizers: This is a type of warm-mist humidifier that uses heat to create steam. Remove the water tank and use warm soapy water and/or a vinegar soak to clean it.
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Meet our experts
At NBC Select, we work with experts who have specialized knowledge and authority based on relevant training and/or experience. We also take steps to ensure all expert advice and recommendations are made independently and without undisclosed financial conflicts of interest.
- Melissa Maker is the founder of cleaning site Clean My Space and the author of Clean My Space: The Secret to Cleaning Better, Faster, and Loving Your Home Every Day.
- Robin Murphy is the president of the professional cleaning services company Maid Brigade, based in Westchester, NY.
- Delah Gomasi is the founder of cleaning company Maid For You.
Why trust NBC Select?
I’m a commerce editor at NBC Select, where I regularly cover cleaning topics and appliances. I’ve written about the best dishwasher detergents, steam mops, and carpet cleaners. I’ve also written guides on how to clean grout, garbage disposals and coffee makers. I spoke with two cleaning experts for their guidance to write this story.
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