# 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.

- [Original product page](https://best-deals.pro/product/dreo-smart-4l-cool-mist-humidifier)
- [View offer](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- Market: US
- Language: en-US
- Currency: USD
- Brand: DREO
- Model: Dreo Humidifier
- Category: Home & Kitchen > Heating, Cooling & Air Quality > Humidifiers & Dehumidifiers
- Price: 40.14 USD
- Previous price: 49.99 USD
- Discount: 20%
- Price checked: 2026-11-12T11:04:23.199Z
- Rating: 4.4 / 5
- Reviews: 12378

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## 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.

## 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.

## 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

## Before you buy

- 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.

## In the box

- Aroma pad (Included)
- Cleaning brush (Included)
- Humidifier body (Included)
- User manual (Included)

## 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.

## Customer feedback

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.
- Positive themes: Customers describe the unit as quiet and easy to fill and use.
- Positive themes: Feedback also praises humidity output, remote adjustment, and ease of cleaning.
- Negative themes: Durability feedback includes reports of the unit breaking within two months.
- Mixed feedback: Opinions on whether it is worth the money are mixed.

## Frequently asked questions

### How large is the tank?
The listed capacity is 4 liters.
### Can it be controlled remotely?
The listing names app, touch, and voice controls, and says it works with Alexa and Google Assistant.
### How long can it run between refills?
The listing claims up to 36 hours. Actual runtime can vary with settings and use.
### Are demineralization and clean-mist cartridges included?
They are described as optional upgrades. The supplied included-components list does not name either cartridge.

## Alternative options

- [DREO 6L Smart Humidifiers for Bedroom, Large Room, 60H Runtime, Quiet 28dB \| Top Fill Supersized Cool Mist Humidifier for Plants, Indoor, Home, Night Light, App/Touch/Voice Control, Ebony](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [FOHERE 6L Humidifiers for Bedroom, 60H Cool Mist Humidifier for Large Room, 28dB Ultra-Quiet Runtime for Baby, Indoor, Plants, Smart Humidity Sensor, 16H Timer, Night Light, Oil Diffuser, White](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [DREO 6L Smart Humidifiers for Bedroom, Warm & Cool Mist for Large Room \| 60-Hour Quiet Runtime, 500ML/H Output, Smart Humidity Sensor, Indicator Light, App Control, Works with Alexa & Google, Silver](https://best-deals.pro/visit/dreo-dr-hhm003s-6l-smart-warm-cool-mist-humidifier)
- [DREO 8L Smart Humidifier Large Room, 80H Runtime, Cool & Warm Mist, HM717S \| Up to 600ft², Precise Humidity Control, 1500+RGB Light, 28dB, Humidifiers for Bedroom, Plants, Baby, Supports APP/Voice/Alexa](https://best-deals.pro/visit/dreo-hm717s-8l-smart-warm-cool-mist-humidifier)
- [Home Humidifier for Large Room, 2.11Gal Cool Mist Top Fill,120H \| Bedroom Humidifie...](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [DREO 4L Humidifiers for Bedroom, 36H Runtime, 28 dB Quiet, HM311 \| Easy to Refill & Clean, BPA-Free, Nightlight, Supersized Air Humidifiers for Large Room, Baby Nurseries, Plants, Indoor](https://best-deals.pro/visit/dreo-hm311-4l-ultrasonic-humidifier)
- [Vicks Warm Mist Humidifier for Medium to Large Rooms, 1 Gal Tank \| Filter-free humidifier supports easier breathing at night, quiet operation, auto shut-off, suitable as a nursery humidifier](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [Provirtec Cool Mist Humidifier for Bedroom Easy to Clean, 6L Ultrasonic \| One-Piece Tank, Easy to Refill & Clean, 60H Runtime, Remote Control for Large Room & Home, Comfort Mode for Aldult](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [Space Player Cordless Humidifier for Bedroom, Dual Mist, Quiet, 3L Top Fill \| 4000m...](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [KZF Humidifiers for Bedroom, 4L Cool Mist Humidifier for Large Room, Black \| 40H Runtime, Top Fill, 2-in-1 Oil Diffuser & Air Humidifier for Baby, 28dB Quiet, Humidity Display & Control, Auto Shut-off](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [Homedics Portable Humidifier - Small Air Humidifiers, Matte Black \| for Bedroom, Plants, Office, Travel - Cool Mist Humidifiers, Color-Changing Accent Light, 2 Mist Settings](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)

## Add-ons

- [DREO 6L Humidifiers for Bedroom, 60H Runtime, 28 dB Quiet, HM524 \| Precise Humidity Control, Easy to Refill & Clean, Nightlig](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)
- [DREO 11L Smart Humidifier Large Room 700 ft², 100H Runtime, 21dB Quiet 747S \| Top Fill, 1500+RGB Light, APP & Remote Control,](https://best-deals.pro/visit/dreo-smart-4l-cool-mist-humidifier)

## Images

![DREO Smart Humidifier, 4L Cool Mist — 1](https://best-deals.pro/i/-QbzX7yju47FluxPdxph03ZDhCahS6u6oavXwC8MTxaCDENJTCu6IaXO3hizpfJ272omTjaTlIwaDj6zYxTbEWJ8pDbgdgeUEtC7Foc9__-Z3jWBsuQDXX2v.jpg)

![DREO Smart Humidifier, 4L Cool Mist — 2](https://best-deals.pro/i/P4GUJBcSufqG2Aftz6pNQLxOJdZaC0_LqivhNxS6RyXuNJD-Et_DG6O5biqzLZ0_Z0xYpX9yUG7dhPc07HnNKWOt-47kolRturchjP5NgeKsx_x8QZyKuANc.jpg)

![DREO Smart Humidifier, 4L Cool Mist — 3](https://best-deals.pro/i/Cg_oDxcdKGpT8JMnoO4B55jKZUkWHjK2HbM2hefUcE5GLMNtFih7XYXIrdjg-KeAZq6iY8HPqWkMQApReR_MVCo2t2crk6pfr7TWJRHLcM-kL2kJZ-T1ePi6.jpg)

![DREO Smart Humidifier, 4L Cool Mist — 4](https://best-deals.pro/i/S3EPNfpOg-_CO1fOzfn30w2VY4ZElqO6yxR3MpdKj4Aqb7vZe6Nx3VgWYWuAYqR_PSBUOmniX1vENcORnvpACCTgujfAzUDdzdgTFq4YmnO0L4UlQ4XO8Rvh.jpg)

![DREO Smart Humidifier, 4L Cool Mist — 5](https://best-deals.pro/i/qEWxaJ6hH_yQMY7eluOno5uiRsnWeoCigohejzEzdLNNaC4t2qwNuNKS1ni4QGy91IuwhpNPkx29LYFG-MgX5nmQUhxLeyrLCKWPiSAiYBSVvBfIKlH-wM13.jpg)

![DREO Smart Humidifier, 4L Cool Mist — 6](https://best-deals.pro/i/RdJL7fHsM7jZBmKSGhP_ZU0l7JmoALlb0t3_I9mA4tfp3n0f-MSxTx75QyKdV314W9eUxw-A-qsp3MN4XAWZZVRnkVnNV3nel452nyfirJ1aq6bbYdkn8uGG.jpg)

![DREO Smart Humidifier, 4L Cool Mist — 7](https://best-deals.pro/i/vyph2IFLmb2h_fLALKJJNJnyFGplIQFC6aIdxrPHSNQJk0hLQPRyXScAsKdl56tw99cYdrrBrOr8vYi9KkevYxqaKvajthJPL-2PYTIz7_7sjdz69KNGUbu3.jpg)