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Dreo HM524S Smart Humidifier

Dreo HM524S Smart Humidifier

4.9· 195 ratings

Best price now

$59.99at DreoObserved at 8:25 PM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Dreo HM524S Smart Humidifier

The Dreo HM524S is a 6 L ultrasonic cool-mist humidifier for rooms up to about 500 square feet, with a humidistat, auto mode, three mist levels and WiFi app control. It stands out for quiet 28 dB running, a tall 40-inch mist plume and a modular top-fill tank that comes apart for cleaning. At $59.99 at Dreo as of November 3, 2026, it sits at a low point for a smart 6 L humidifier.

Best forBedrooms and nurseries where quiet mattersMedium rooms up to about 500 sq ftPeople who want app control and auto humidityOwners who dislike scrubbing hard-to-reach tanks
Pros
  • Very quiet at a rated 28 dB
  • Large 6 L top-fill tank cuts refills
  • Auto mode holds humidity within about ±5%
  • Modular parts come apart for cleaning
  • WiFi app with low-water and cleaning alerts
  • Cool mist is safe around kids and pets
Cons
  • Real runtime is far below the 60-hour claim
  • White mineral dust can still appear on surfaces
  • No parts are dishwasher safe
  • Status lights are hard to see in night mode
  • Oversized for very small rooms

Dreo HM524S Smart Humidifier prices at every store

  • DreoNew

    In stock

    $59.99Free shippingObserved at 8:25 PM
    Visit store
  • AmazonNew

    Availability unknown

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

    $62.29Free shippingObserved at 8:25 PM
    Visit store
  • eBayPre-owned

    Out of stockSold by econsignments

    $21.99+ $17.91 shippingObserved at 8:25 PM
    Visit store

Also available at

  • eBayCheck price at eBay

Dreo HM524S Smart Humidifier price history

Lowest price we've seen: $59.99 on Nov 4 at Dreo. Tracked across 2 stores since Nov 4.

What reviewers say

Owners rate it highly, with 4.9 out of 5 from 195 ratings, and most praise the quiet operation, easy cleaning and accurate humidity control. The main complaints are that the 60-hour runtime is overstated and that white dust can build up on furniture.

Pros
  • Very quiet at night
  • Easy to clean and refill from the top
  • Auto mode keeps humidity steady
  • Large tank means fewer refills
Cons
  • Tank empties in about 12 hours, not 60
  • White mineral film on surfaces
  • Nothing is dishwasher safe
  • Hard to tell if it is on with lights off

From Dreo

  • Supersized mist: 40-inch tall, 4-inch wide mist output
  • 6L tank for up to 60 hours of continuous humidification
  • Ultra-quiet operation at just 28dB
  • Next-gen Auto Mode tracks and keeps humidity within ±5%
  • Modular design for easy cleaning
  • Smart WiFi control with app alerts for low water and cleaning
Sizing
Best for a medium room; one reviewer notes it suits a 400 sq ft room or a 13x14 ft bedroom but won't humidify a whole house.
In the box
Humidifier x 1, User Manual x 1, Cleaning Guide x 1, Cleaning Brush x 1, Aroma Pad x 2 (1 pre-installed)

About the Dreo HM524S Smart Humidifier

Take control of humidity with DREO's 6L humidifier, featuring supersized mist and up to 60 hours of continuous dryness relief.

What buyers say

Buyers like
  • Very quiet operation
  • Easy to clean with removable modular parts
  • Easy top-fill refilling
  • Accurate humidity sensor and auto mode
  • Large 6L capacity means fewer refills
  • Improves sleep and dry-air comfort
Buyers complain about
  • 60-hour runtime claim overstated; tank runs out in about 12 hours in practice
  • White mineral dust/film on surfaces even with the demineralization cartridge
  • No parts are dishwasher safe
  • In night mode with lights off, hard to tell if the unit is on
  • Too powerful for very small rooms
  • USPS shipping slow

Specifications

Humidification Type
Ultrasonic
Coverage Area
500 Square Feet
Water Tank Capacity
6 L
Volume
6 L
Automatic Shutoff
Yes
Timer
Yes
Filter Type
Pre Filter

Questions and answers

Is the 60-hour runtime realistic?
No. Owners report the tank running dry in roughly 12 hours at higher output. Expect closer to 60 hours only on the lowest mist level in a small, sealed room.
Is it worth $59.99?
At $59.99 at Dreo as of November 3, 2026, it is a strong value for a quiet 6 L humidifier with app control and auto mode. Comparable smart models often cost more.
Does it work with Alexa or Google Home?
Dreo's app handles WiFi control, schedules and alerts. Voice assistant support varies by model and region, so check the app listing before relying on it.
How often do I need to clean it?
Plan on a rinse every few days and a deeper clean weekly, since ultrasonic units and standing water invite film and odor. The included brush and modular parts make that quicker.
Will it leave white dust?
It can. Ultrasonic mist carries dissolved minerals into the air, and owners report white film on surfaces even with the demineralization cartridge. Distilled water reduces it.
What comes in the box?
The humidifier, a user manual, a cleaning guide, a cleaning brush and two aroma pads, one pre-installed. No demineralization cartridge is listed.
Where is the Dreo HM524S Smart Humidifier cheapest?
At Dreo, for $59.99, as of our latest check.
What do buyers say about the Dreo HM524S Smart Humidifier?
Rated 4.9 out of 5 from 195 ratings. Buyers like: Very quiet operation; Easy to clean with removable modular parts; Easy top-fill refilling. Common complaints: 60-hour runtime claim overstated; tank runs out in about 12 hours in practice; White mineral dust/film on surfaces even with the demineralization cartridge.
Where can I buy the Dreo HM524S Smart Humidifier?
3 stores we checked sell it, including Dreo, eBay, Amazon.

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HEPA Filter
No
Ionic Filtration
No
Filter Highlights
Pre Filter
Functionality Type
Humidifier
Humidistat
Yes
Mist Temperature
Cool mist
Mist Type
Ultrasonic
Speed Settings
3 mist levels
Modes
Auto Mode
Functionality Highlights
With Humidistat
Depth
5.91 in
Height
12.4 in
Width
11.42 in
Recommended Location
Bedroom
Mist Output
40-inch tall and 4-inch wide mist
Noise Level
28 dB