Last Updated: Apr 4, 2023 @ 10:37 am.

What is the best warm mist humidifier? To find out, we tested a dozen models to find out which ones were easiest to use—and easiest to clean. Here are the ones we recommend.

FYI: We've been reviewing and rating products for the home and families since 1994. We don't take money or freebies from the brands we review. Our work is 100% reader-supported!

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Best For Bedrooms

Lasts overnight
So easy to use! We liked this simple humidifier, with its analog controls. Also nice: auto shut-off feature is handy.

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Best For Bedrooms: Vicks Warm Mist Humidifier

Let’s talk best warm mist humidifiers.

Most humidifiers sold on the market today are cool mist—and they work well in most situations to add humidity to a room.

But what if you live in a drafty home with leaky windows or little wall insulation? A warm mist humidifier may work for you, adding warm mist that helps cut the chill in a room.

A few caveats, however!

First, we do not recommend warm mist humidifiers in a baby’s room. Why? The mist that comes out can get quite hot—and that can cause a scalding or burn injury if the humidifier is in a place that a baby or toddler can reach.

Also: a too-warm nursery is a safety risk, based on research we reviewed for nursery safety. If you still decide to use a warm mist humidifier, make sure the temperature in the baby’s nursery does not rise above 70 degrees in the winter.

Another caveat: all warm mist humidifiers require require diligent cleaning or mold and other nasties will grow inside the unit. While we found this warm mist humidifier to be easy to clean, you must REGULARLY do this . . . and that amount of maintenance is usually more than a cool mist humidifier.

If you are still with us, then let’s talk about the best performing warm mist humidifier.

The best bet for most folks is the Vicks Warm Mist Humidifier is the best bet for warm mist humidifiers. It is easy to use and has an auto shut-off, which is most useful.

Here’s more:

What We Liked

• Simple controls.

• Affordable.

• Easy to clean.

• Auto shut-off.

What Needs Work

• Distilled water works best. This is true for most warm mist humidifiers—distilled water cuts down on the cleaning and will extend the life of this warm mist humidifier.

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Best For Large Rooms

Huge tank means longer run times
Powerful ultrasonic humidifier that can pump out mist that is either cool or warm . . . great if you have a drafty room. Built-in humidity control works well.

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Best For Large Rooms: LEVOIT Humidifier LV600HH

Most humidifiers have small tanks that are designed for use in a bedroom or office. But what if you want to humidify a larger room? 

This model is excellent for larger rooms. To humidify a large room up to 750 square feet, you need two things: a large tank for long run times and customized humidity controls to correctly dial the moisture. The LEVOIT Humidifier LV600HH hit all the right notes in our testing.

Also nice: this unit offers both warm AND cool mist. So if you decide the temperature in the room is ideal, you can switch from warm to cool mist.

Here’s what we liked:

What We Liked

• Large tank. With a six liter capacity, this humidifier can run 22-35 hours without refilling.

• Accurate humidistat and granular controls. Many humidifiers just have a high or low setting—this model allows much more control, which is important when it comes to large spaces.

• Warm and cool mist. Few models offer both large capacity AND warm mist—this one does and that’s a big plus if you want to humidify a drafty room.

• Remote control. Another nice feature for large rooms—you can use the remote to turn it on or off from a bed or couch.

What Needs Work

• Nooks and crannies to clean. All humidifiers require cleaning—and the Levoit LV600HH is no exception. One negative are the all the little nooks and crannies on this model, which make cleaning a bit harder.

• Needs to be on shelf or table. Like most ultrasonic humidifiers, this model works best when positioned off the floor. On a table or shelf works best.

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Best With Essential Oils

Tried & true brand
Loved this simple model for the amount of warm mist it produced—9 hours (on high) in our tests. Also nice: no filters to replace.

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Best With Essential Oils: Honeywell Easy-to-Care Filter Free Warm Mist Humidifier

We liked this humidifier by Honeywell, which is a tried and true brand in this category (we’ve owned several over the years). This model has two key features we liked: the ability to add essential oils to the warm mist. And filter free operation, which means less in maintenance costs.

What We Liked

• Easy to clean.

• Affordable.

• Easy to set up.

• Works with essential oils—not all warm-mist humidifiers we tried have this features.

• Lasted for about 9 hours in our tests (when on high)—enough for the entire night.

• No filters to replace.

What Needs Work

• Caution: warm mist humidifiers can cause burn injuries, so never put in an area accessible by children. Also: never overheat a baby or child’s room. Use a thermometer and humidity gauge to make sure the temperature doesn’t rise above 70 degrees Fahrenheit. And the humidity should stay at 50% or lower.

• Works best with distilled water. If you use regular tap water (especially in areas with hard water), you will have to frequently clean it. best warm mist humidifiers

Why Trust Us

We’ve been rating and reviewing products for the home and families since 1994. We do extensive research, evaluating products with an eye toward quality, ease of use and affordability. When we purchase a product for hands-on testing, we do so with our own money.

Here’s another key point: we don’t take money from the brands we review. No free samples, no sponsors, no “partnerships.” Our work is 100% reader-supported!

best warm mist humidifiers

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