DREO Smart Warm and Cool Mist Humidifier 6L
- Floor Area: 550 sq ft
- Capacity: 1.6 gallons
- Runtime: 60 hours
- Operation Mode: Ultrasonic
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable dual-mode humidifier with real app depth, worth it if you will use distilled water and clean it on schedule.
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ASIN: B0CB4CK3ZSModel: DR-HHM003SCategory: Humidifiers
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Overview
Dreo's 6-liter humidifier switches between a 133 degree F warm mist and a cool mist from the same tank, aimed at bedrooms and larger rooms up to 550 square feet. App, Alexa and Google control plus a humidity sensor round it out.
The warm and cool switch is the real differentiator here, not just another cool-mist tank. The optional demineralization cartridge is sold separately, not included.
- 6L tank rated for multiple days between fills
- 133 degree F warm mist ready in about 5 minutes
- Covers up to 550 sq ft with a 40 inch mist
- Auto mode holds 30 to 90 percent humidity
Who it's for
Fits a bedroom or living room where winter calls for warm mist and summer for cool, and where app or voice control matters. Less suited to anyone who wants a fill and forget unit with no cleaning routine, since the tank size and mineral buildup both reward regular upkeep.
Pros and cons
- Warm and cool mist from one 6L tank
- App tracks humidity trends and reminds you to clean
- Works with Alexa and Google Assistant
- Aroma tray built into the lid
- Best results need distilled, not tap, water
- Full 6L tank is heavy to carry
- One reviewer had a unit fail after months
Performance notes
MistWave heating brings the tank to warm-mist temperature in about 5 minutes rather than a slow ramp, and the stated 5 percent humidity tolerance is what lets Auto mode hold a target between 30 and 90 percent without much drift. Manual mode gives 3 mist levels and Sleep mode dims the display and quiets the unit overnight, with the app tracking 30-day humidity trends and sending cleaning reminders.
Specifications
| Brand | Dreo |
|---|---|
| Model | DR-HHM003S |
| Dimensions & fit | |
| Item Weight | 6 pounds |
| Item Dimensions D X W X H | 11.4 × 6.1 × 13.9 inches |
| Capacity & performance | |
| Capacity | 1.6 gallons |
| Power & efficiency | |
| Wattage | 280 watts |
| Voltage | 110 volts |
| Power Source | Corded Electric |
| Construction & materials | |
| Material | BPA FREE, Plastic, Suitable For Baby |
| Color | Silver |
| Included components | |
| Unit Count | 1 |
| Included Components | Humidifier Body, Power Cord, Water Tank |
| Other details | |
| Floor Area | 550 sq ft |
| Runtime | 60 hours |
| Operation Mode | Ultrasonic |
| Filter Type | Pre Filter |
| Control Type | App, Touch, Voice |
| Item Shape | Oval |
| Part Number | DR-HHM003S Silver |
| Item Type Name | Humidifier |
| Other Special Features Of The Product | Adjustable Humidity Control, Aroma Diffuser, Digital Display, Humidistat, Timer |
| Room Type | Bedroom, Large Room, Living Room, Nursery, Office |
Frequently asked questions
Does the Dreo DR-HHM003S do both warm and cool mist?
Yes, it switches between a 133 degree F warm mist and a cool mist from the same 6L tank, useful for winter and summer alike.
How loud is it and how long does it run per fill?
Dreo rates it for up to 60 hours of runtime per fill, with a Sleep mode meant for quiet overnight use.
Do I need the demineralization cartridge?
It is optional and sold separately.