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Deal.ai › Mainstays › Ultrasonic Humidifiers
Mainstays
Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight

Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight

4.3(854 ratings)

Last price we saw

$19.42at Walmart, last seen Nov 15

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Price facts

  • Last seen at $19.42 at Walmart on Nov 15.

Our take on the Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight

The Mainstays Ultrasonic Cool Mist Humidifier is a small personal humidifier with a 0.31-gallon tank, a built-in nightlight and an aroma option. It runs up to 15 hours on low mist and covers rooms up to 219 sq ft, so it suits a bedroom, desk or small office rather than an open living space. Against larger ultrasonic rivals it trades tank size and runtime for a light, compact body that fits on a nightstand. Owners rate it well overall, though the small tank means frequent refills and the mist output is modest.

Best forBedside and nightstand useDesks and small officesSmall bedrooms up to about 219 sq ftShoppers who want a nightlight and aroma in one unit
Pros
  • Compact and light at 1.32 lb, easy to move between rooms
  • Up to 15 hours of runtime on the low setting
  • Built-in nightlight for nighttime use
  • Aroma option adds scent to the mist
  • Simple ultrasonic cool mist design with no filters to buy
Cons

Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight prices at every store

  • WalmartNew

    Out of stock

    $19.42Checked 13 h ago
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Also available at

  • WalmartCheck price at Walmart

Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight price history

Lowest price we've seen: $19.42 on Nov 15 at Walmart. Tracked across 1 store since Nov 15.

What reviewers say

  • 4.3 / 5854 ratings

Owners of this Mainstays humidifier generally rate it well, calling it a good small unit for bedrooms and desks. Complaints center on the small tank and the need to refill often.

What people mention
  • Tank sizeCriticisedOwners say the small tank empties fast and needs refilling often.
  • NoisePraised

Questions and answers

How long does the tank last?
The 0.31-gallon tank runs up to 15 hours on the low mist setting with cool water. Runtime is shorter on higher settings and varies with your home's humidity.
What size room is it for?
It covers up to 219 sq ft, so it suits a bedroom, desk area or small office. It is not meant for large open rooms.
Does it have an auto shutoff?
The listed features do not mention an automatic shutoff or humidity sensor. Plan to check the water level yourself.
Can I use essential oils in it?
It has a built-in aroma feature for adding scent to the mist. Follow the manufacturer's guidance on what to add and how much.
Is it quiet enough for a bedroom?
It is an ultrasonic cool mist unit, and owners commonly describe it as quiet at night. It is a reasonable choice for a bedside table.
What comes in the box?
The humidifier unit itself is the core item. Check the package contents for any included aroma pads or accessories before buying.
What do buyers say about the Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight?
Rated 4.3 out of 5 from 854 ratings.

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0.31-gallon tank needs frequent refilling
  • Mist output is modest, suited to personal spaces only
  • Runtime drops on higher mist settings
  • No auto shutoff or humidity sensor mentioned
  • Reviewers describe it as quiet enough to sleep next to.
  • SizePraisedBuyers like that it is small and light enough for a nightstand or desk.
  • Mist outputMixedSome find the mist fine for a small room, others say it is too weak for bigger spaces.
  • NightlightPraisedThe built-in nightlight is a commonly mentioned plus for bedrooms.
  • About the Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight

    This ultrasonic cool mist humidifier adds moisture to the air in personal residential spaces. It covers up to 219 sq ft. It also has built-in aroma and nightlight features.

    It measures 6.14 in x 6.14 in x 7.8 in and weighs 1.32 lb. The small, lightweight body fits on a countertop, desk or bedside table.

    The 0.31 gal tank runs up to 15 hours on the low setting with cool water. Actual runtime varies with the home's natural humidity, the water temperature and the mist setting.

    Type
    Ultrasonic cool mist humidifier
    Color
    Black
    Dimensions
    6.14 in x 6.14 in x 7.8 in
    Weight
    1.32 lb
    Tank capacity
    0.31 gal
    Runtime
    Up to 15 hours on low setting with cool water
    Coverage
    Up to 219 sq ft
    Features
    Aroma function, nightlight

    Specifications

    color
    BlackSource
    actual_color
    BlackSource
    size
    6.14" x 6.14" x 7.8"Source
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  • Stores we've priced the Mainstays 0.31 Gallon Ultrasonic Cool Mist Humidifier with Aroma and Nightlight at

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