DREO Smart Cool Mist Humidifier 4L
- Floor Area: 300 sq ft
- Capacity: 1.1 gallons
- Runtime: 36 hours
- Operation Mode: Ultrasonic
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B0CCVX6FSDModel: DR-HHM001SCategory: Humidifiers
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Overview
A 4-liter cool mist humidifier from Dreo built around a dual-intake system for stronger output, with app and voice controlled Auto humidity targeting and a 36-hour runtime per fill.
Dreo pitches this as the quieter, more automated sibling to its basic tank humidifiers: the dual-intake system is meant to push more mist per hour than a single-intake design, while Auto mode removes the guesswork of picking a manual level.
- Dual-Intake System for stronger mist output
- 4L top-fill tank rated for 36 hours
- Auto humidity targeting via app or voice
- 5 micron ultra-fine mist to protect surfaces
Who it's for
Suits a bedroom or living space where someone wants the humidifier to hold a target humidity on its own rather than checking and adjusting it by hand. Less useful for anyone who just wants a basic manual dial with no app.
Pros and cons
- Auto mode targets a set humidity without manual adjustment
- 36-hour runtime on a 4L fill
- Rated as low as 28dB
- Optional cartridges for mineral and mist filtering
- Demineralization and clean mist cartridges cost extra
Performance notes
The Dual-Intake System is what Dreo credits for stronger mist output than typical single-intake designs, and high-frequency atomization produces a 5 micron ultra-fine mist meant to disperse before it settles on furniture. The 4L top-fill tank is rated for up to 36 hours per fill, with acoustic design said to keep operation down to 28dB.
Specifications
| Brand | Dreo |
|---|---|
| Model | DR-HHM001S |
| Dimensions & fit | |
| Item Weight | 3.1 pounds |
| Item Dimensions D X W X H | 11 × 10.2 × 5.5 inches |
| Capacity & performance | |
| Capacity | 1.1 gallons |
| Power & efficiency | |
| Wattage | 25 watts |
| Voltage | 120 volts |
| Power Source | Corded Electric |
| Construction & materials | |
| Material | BPA FREE, Plastic, Suitable For Baby |
| Color | Black |
| Included components | |
| Number Of Packs | 1 |
| Unit Count | 1 |
| Other details | |
| Floor Area | 300 sq ft |
| Runtime | 36 hours |
| Operation Mode | Ultrasonic |
| Filter Type | Pre Filter |
| Control Type | App, Touch, Voice |
| Item Shape | Oval |
| Part Number | DR-HHM001S |
| Item Type Name | Humidifier |
| Room Type | Bedroom, Kids Room, Living Room, Nursery, Office |
Frequently asked questions
How long does the Dreo 4L cool mist humidifier run per fill?
Dreo rates the 4L tank for up to 36 hours of runtime before it needs a refill.
Can it maintain a specific humidity level on its own?
Yes, Auto mode is designed to sense room humidity and adjust output to hold a target level without manual input.
Does it need a special cartridge?
No, the Demineralization and Clean Mist cartridges are optional upgrades sold separately, not required to run the humidifier.