Mainstays

Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma, Black

4.2 stars out of 209 reviews
(4.2)|
209 ratings
Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma, BlackMainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma BlackMainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma Vanilla Dream3 pack Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma Vanilla Dream3 pack Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma Blue3 pack Mainstays Round Ultrasonic Cool Mist Top Fill Humidifier with Aroma Black
Actual Color:Black-Out of stock
Blue
Vanilla Dream, $33.82
selected, Black, $33.82, Out of stock
Pack Size:Single-Out of stock

Key item features

  • Extended Operation: Provides up to 60 hours of continuous cool mist on the low setting, with actual run times varying based on environmental factors and mist level.
  • Comforting Ambiance: Features a warm yellow night light and utilizes ultrasonic technology to evenly disperse moisture, enhancing room comfort.
  • Protective Benefits: Helps reduce static electricity, benefiting electronics, and protects wood floors, furniture, and indoor plants by maintaining consistent moisture.
  • Safety Features: Equipped with an automatic shut-off mechanism that activates when the 1-gallon tank is empty, ensuring safe operation.
  • Optimal Coverage: Designed to effectively humidify an area of up to 372 square feet, making the environment feel warmer and more comfortable.
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Current price is $33.82
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Customer ratings & reviews

4.2 out of 5 stars
stars209 ratings85 reviews
How item rating is calculated
  1. 5 stars72% (151)
  2. 4 stars8% (16)
  3. 3 stars3% (6)
  4. 2 stars3% (6)
  5. 1 star14% (30)

Reviews summary

Pros
  • : Provides gentle light in the night.
  • : Operates with minimal pressure required.
  • : Has a modern and compact look.
  • : Allows easy water refilling.
  • : Has a contemporary look with clean lines.
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Showing 1-3 of 85 reviews

Jan 5, 2026
Heather
Item details
Color: Black
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

beautiful humidifier for a bedroom. Mist is instant and it has an easy control of the rate of.flow. Way more esthetic than the traditional"ugly" ones. And you can add pads of fragrance to help with the congestion or something like lavender to help with sleep.

Helpful?64KBYSQX804P5463206822
Jan 23, 2026
Lauren
Top Reviewer
Item details
Color: Black
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Powerful, quiet, %26 aesthetically pleasing

Cute humidifier, puts out a lot of mist and so quiet you cant hear it. Just got it, been running about 3 hours and so far so good! I have gas heat and it just sucks any moisture out the air, definitely needed something to be able to breathe. I like the light that you can turn it on and off, and the power/setting is touch, no buttons. Plus no filter. Budget friendly, Im happy!

Helpful?64KBYSQX804P5463206822
Dec 22, 2025
David
Item details
Color: Blue
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Why I like this humidifier/vaporizer from Walmart

I've owned numerous vaporizers/humidifiers over the years. This one is TOPS! It's easy to fill. The ease of operation is perfect for anyone. Touch control allows me to set the amount of mist so easy. Just slide my finger up or down the slider and the mist volume immediately changes to my touch. I fill it once a day. I use the pitcher from my blender to carry water to it. I highly recommend this item.

Helpful?64KBYSQX804P5463206822