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Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier

Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier

4.5· 2 ratings

Best price now

$38.77at AmazonObserved at 8:16 PM

Compared across 7 stores. Prices are checked against each store and labelled with when.

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Our take on the Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier

The Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier is a 0.5-gallon ultrasonic unit for small rooms, rated for up to 215 sq ft. It runs up to 24 hours on low, has a one-knob mist control, a directional outlet and no filter to replace. Its footprint is about 8x8 inches, so it fits on a nightstand or desk. The best new price is $38.77 at Amazon as of November 3, 2026, with 7 stores listing it new.

Best forBedrooms and small rooms under 215 sq ftDesks and nightstands where space is tightPlant owners adding humidity to a small areaBuyers who want a filter-free humidifier
Pros
  • No filter to buy or replace
  • Adjustable mist level and directional outlet
  • Compact 8x8-inch footprint
  • Simple one-knob operation
  • Cleaning tool included
Cons
  • 0.5-gallon tank runs about 8 hours on a mid setting, not 24
  • Bright, non-dimmable indicator light on the knob
  • Motor is audible despite the quiet claim
  • Some units show residue or fail within months

Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier prices at every store

  • Best BuyNew

    In stock

    $39.99Free shippingObserved at 8:16 PM
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  • eBayNew

    In stock

    $35.00+ $6.08 shippingObserved at 8:16 PM
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  • SIM SupplyNew

    In stock

    $44.68Observed at 8:16 PM
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  • WalmartNew

    In stock

    $38.77+ $6.99 shippingObserved at 8:16 PM
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  • Family HardwareNew

    In stock

    $40.88+ $13.00 shippingObserved at 8:16 PM
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  • HoneywellStore.comNew

    In stock

    $44.95+ $11.40 shippingObserved at 8:16 PM
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  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $38.77Free shippingObserved at 8:16 PM
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Also available at

  • eBayCheck price at eBay

Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier price history

Lowest price we've seen: $35.00 on Nov 4 at eBay. Tracked across 7 stores since Nov 4.

What reviewers say

Owners call it small, simple and effective at adding moisture, with good adjustable mist. Several flag the short tank life on higher settings, a bright knob light and audible motor. A few report residue in the tank or a unit that broke within months.

Pros
  • Puts out a good amount of adjustable mist
  • Compact and easy to handle
  • Simple setup with one knob
  • Easier to clean than most, with a tool included
Cons
  • Tank lasts only about 8 hours on a mid setting
  • Indicator light is bright and cannot be dimmed
  • Motor sound is noticeable
  • Residue found in the tank and unit
Reviews
  • Review
    Broken

From eBay

  • Cool mist humidification
  • Mini size
  • 24-hour timer control
  • Coverage more than 215 sq ft
  • 10 dB operating sound rating
  • Glossy finish
Materials
Plastic
Guarantee
1 Year manufacturer warranty
Returns
Seller does not accept returns.
Shipping
USPS Ground Advantage; estimated delivery between Fri, Nov 6 and Thu, Nov 12; free local pickup over 60 mi from 85258.

What buyers say

Buyers like
  • Works great
  • Happy with purchase
  • Bought to add humidity for plants
  • Would buy another for a different room

Specifications

Tank capacity
0.5 gallonsSource
Operation mode
UltrasonicSource
Run time
24 hoursSource
Dimensions
7.87"D x 7.87"W x 8.82"HSource
Coverage area

Questions and answers

Is the 24-hour run time realistic?
Only on the lowest mist setting. Owners report about 8 hours on a mid setting from the 0.5-gallon tank, so plan on refilling daily in normal use.
Is it really quiet at 10 dB?
It is quiet enough for a bedroom, but owners hear the motor, especially up close. The 10 dB rating is optimistic; expect a soft hum rather than silence.
Does it need a filter?
No. It is filter-free, so there is nothing to replace. Rinse the tank and base regularly and use the included cleaning tool to keep residue down.
How big a room will it cover?
It is rated for small rooms up to about 215 sq ft. In larger or open rooms the mist will not raise humidity noticeably.
Is $38.77 at Amazon a good price?
It is the best new price among 7 stores as of November 3, 2026. That is a reasonable price for a filter-free mini humidifier, though check the other stores for shipping costs.
What comes in the box?
The humidifier, its 0.5-gallon tank and a cleaning tool. No filter or replacement parts are needed.
Where is the Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier cheapest?
At Amazon, for $38.77, as of our latest check.
What do buyers say about the Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier?
Rated 4.5 out of 5 from 2 ratings. Buyers like: Works great; Happy with purchase; Bought to add humidity for plants.
Where can I buy the Honeywell Small Compact Ultrasonic Mini Cool Mist Humidifier?
7 stores we checked sell it, including eBay, Walmart, Best Buy, Family Hardware, SIM Supply.

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Small Room
Source
Maintenance requirements
No filter requiredSource
Special feature
QuietSource
Color
BlackSource
Mist control
Adjustable Mist Control, Directional Mist OutletSource
Footprint
roughly 8x8 inchesSource