DREO Smart Humidifier, 4L Cool Mist

The DREO Smart Humidifier is a 4L ultrasonic cool-mist model with app, touch, and voice controls. Its top-fill design and claimed runtime of up to 36 hours suit buyers seeking a bedroom humidifier with remote adjustment, though the runtime and quietness are manufacturer claims rather than independently verified measurements.

At a glance

Top-fill, 4-liter tank is designed to reduce the frequency of refills compared with smaller tanks.
The listing describes app, touch, and voice control, including Alexa and Google Assistant compatibility.
A digital display and timer are listed. The feature description also claims automatic humidity adjustment and ambient indicators.
Manufacturer claims up to 36 hours of operation and noise as low as 28 dB. Actual results may vary with settings and conditions.
Optional demineralization and clean-mist cartridges are described as upgrades, not standard included components.

Price

$40.14Save 20%

Reference price: ~~$49.99~~

Price checked: Nov 12, 2026

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Often bought together

DREO 6L Humidifiers for Bedroom, 60H Runtime, 28 dB Quiet, HM524 | Precise Humidity Control, Easy to Refill & Clean, Nightlig

$49.92

DREO 11L Smart Humidifier Large Room 700 ft², 100H Runtime, 21dB Quiet 747S | Top Fill, 1500+RGB Light, APP & Remote Control,

$99.96

Pros and cons

Pros

Top-fill construction and a 4-liter capacity can make routine refilling more convenient.
Remote app and voice control provide alternatives to operating the unit at its touch controls.
The listed footprint and 3.1-pound weight may suit buyers who need to move or position a humidifier around a room.

Technical specifications

17 specifications

Identity
Brand	DREO
Model	Dreo Humidifier

Capacity and operation
Tank capacity	4 liters
Operation mode	Ultrasonic
Claimed room coverage	300 square_feet
Claimed runtime	36 hours

Features and controls
Control methods listed	App, Touch, Voice
Special features listed	4L Top Fill Ultrasonic Humidifiers for Bedroom, Digital Display, Timer, Wifi/APP/Voice Control, Work with Alexa/Google Assistant

Power
Power configuration	Corded Electric
Voltage	120 volts
Wattage	25 watts

Dimensions and installation
Dimensions	11.02"D x 10.15"W x 5.51"H
Weight listed	3.1 pounds

Materials and protection
Material listed	BPA-Free, Plastic, suitable for baby
Filter type	Pre Filter

Appearance
Color	Black
Shape	Oval

What to know before buying

The listing claims 300 square_feet of coverage, up to 36 hours of runtime, and noise as low as 28 dB. These are manufacturer claims, and runtime and sound may depend on operating settings and conditions.
Cartridges for demineralization and clean mist are described as optional upgrades, so buyers wanting them should confirm separate availability and compatibility.

What’s in the box

Included

Aroma pad
Cleaning brush
Humidifier body
User manual

Who is it for?

A good fit for

Bedroom, nursery, office, or living-room buyers who want a 4-liter cool-mist humidifier with app or voice controls.
People who prefer a top-fill tank and want a timer, digital display, and remote adjustment.

Less suited to

Buyers looking for warm mist, cordless operation, or a clearly documented cartridge-inclusive bundle.
Those who require independently verified coverage, runtime, or noise measurements.

DREO Smart Humidifier, 4L Cool Mist · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 12,378 ratings

5 stars75%75%
4 stars10%10%
3 stars4%4%
2 stars3%3%
1 star8%8%

Customer feedback reports positive impressions of quiet operation, ease of filling and use, humidity adjustment, and cleaning. The listing separately claims a 4-liter top-fill tank, remote controls, and up to 36 hours of runtime, which provide useful context for those experiences but do not verify them. Value opinions are mixed, and durability feedback includes reports of units failing within two months, so buyers should weigh the convenience features against that reported concern.