

💨 Elevate your air game—breathe better, live better, and never miss a mist!
The Dreo 4L Cool Mist Humidifier is engineered for large rooms, offering up to 36 hours of ultra-quiet (28 dB) ultrasonic mist output with a powerful 40-inch mist stream. Its easy top-fill design and modular components simplify refills and cleaning, while integrated aroma diffusion and ambient night light features create a healthier, more inviting environment for bedrooms, nurseries, and offices.
















| ASIN | B0CCY6VG8Z |
| Assembly required | No |
| Batteries required | No |
| Best Sellers Rank | #1,077 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #7 in Humidifiers |
| Brand | DREO |
| Care instructions | Hand Wash |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (12,944) |
| Floor Area | 300 Square Feet |
| Included Components | Aroma Pad, Cleaning Brush, Cleaning Guide*1, Humidifier*1, User Manual |
| Item Weight | 3.12 pounds |
| Item model number | DR-HHM001 |
| Manufacturer | DREO |
| Model Name | HM311 |
| Number of pieces | 1 |
| Operation Mode | Ultrasonic |
| Product Dimensions | 5.51"D x 11.02"W x 10.16"H |
| Room Type | Bedroom, Kids Room, Living Room, Nursery, Office |
| Shape | Oval |
| Special Feature | 28dB Ultra-Quiet Operation, Adjustable Humidity Control, Aroma Diffuser, Easy Top-Fill, Night Light |
| UPC | 850049246026 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts |
| Wattage | 26 Watt-hours |
A**T
Excellent humidifier!
Sturdy humidifier. Easy to set up as well as easy to refill without spilling. It has an adjustable top to choose what direction you prefer the mist to go. I have mine in a fairly large bedroom and the humidifier handles it very well. It is also very quiet instead of making a noise like Niagara Falls like some units do. This is well worth the money.
J**D
Compact, Quiet, and Reliable
It's. compact, very quiet, aesthetically appealing, and pumps out water vapor like there's no tomorrow. Am very happy I purchased this with the larger reservoir because it runs for hours before needing to be refilled. And with the cold winter air containing zero moisture, I run this humidifier in my bedroom 24/7 refilling as necessary. It's very easy to set up and put to use, plus the soft blue light is a nice feature in that it can be turned off or on. I would buy this one again.
K**S
Excellent humidifier. Need to use treated water to avoid white dust
Works great in main bedroom. Easy to set up. I have been using it for three weeks with distilled water and Pure additives to tap water, and have not experienced white dust except the one time I filled with plain tap water. It is quiet and does not interfere with sleep. The hygrometer seems accurate as I have another hygrometer in the room which registers the same humidity level. It does go through about 1.5 gallons per day on the 3 level. Using the 1 level uses about a gallon of water. I have guitars in the room, which requires humidity around 45-50% and I find this to be useful for this purpose besides improving the air quality.
A**A
Falls short on safety without mist stream direction
I have 5 Dreo humidifiers in all, a newer version of this model as well as this model. Pros - quiet and effective. The light settings are lovely, I don’t use them much in main living areas but my kids love the light features for a gentle night light. Mist is cool, fine, and travels well in the air. Cons - so this is where I am really struggling with these units. The projection of the mist is so upright and narrow that it shoots more than 40 inches high. You WANT the mist up high for the best distribution of the heavier (water dense) air - i.e. your humidity. So I understand why it’s a feature to force the mist so high. And most furniture surfaces we might place this on are high up. However, you can’t actually aim the direction of the mist almost at all, period. The tops (both models I have are the same) have an adjustable top to direct the stream of mist forward or back - a fraction of an inch! It does not actually help, at all. So, if like most people, you set these units on a piece of furniture the height of a tall dresser or perhaps a short bookshelf you will saturate your ceiling. (See photo of green unit). If you put these things on a plant shelf, you’ll have huge droplets of water collecting on the underside of the shelf - and if you have grow lights, well, those are soaked now, too. (Photo of white unit on a shelf with very tall plants). In a desperate attempt to avoid mold and damage to my ceiling (or electrical components to my lights) I folded a thin vinyl notebook cover into an elbow-shaped-tube (green unit in the photos). This is both a very obnoxious thing to have to try to fix as well as an overall hazard. Many many competent designs exist to allow you to direct the flow of the mist away from items that could be damaged. My makeshift “tube” collects water (of course it does) and drips so I also have my unit sitting inside a plant tray. This is entirely too many steps to make it safe to operate my units around things like ceilings, walls, furniture, lights, and plugs. I don’t know about you, but those are all extremely hard to avoid in every house I’ve ever been inside. Eventually I will grab an angled funnel from my local automotive store to replace the make-shift tube I made to get by. By the time I buy funnels and plant trays for every unit I really start to resent the extra steps, costs, tweaking, and daily mess to maintain in the name of safety, which should be a key consideration in the design of an electrical appliance that you fill with water. Tips: Remove ALL packaging. Start on low, run for a day, gradually work your way up until the humidity is where you need it. Use distilled water only, sorry! If you want it to last and you don’t want to take it apart and clean it incessantly, used distilled water. Tap water and drinking water will introduce minerals, chlorine, and bacteria which will shorten the life of any unit from any brand and will increase the frequency of which they need to be cleaned. Put something underneath it! ALL humidifiers function by super-soaking the air with water. Surfaces nearby collect water, that water forms drips, drips make a mess. Place your unit inside a plastic tray, dish, or tote. Don’t overfill it, for real.
S**H
Great product
The Dreo is very easy to use, quiet, no filter necessary unless you have hard water, and the "nightlight" that can be turned off is a nice feature. It holds plenty of water but when needed, refilling is a breeze. I like the fact you can see the "mist" rising so you know your room is being humidified. Great product at a very reasonable price.
G**G
Inexpensive, Simple, and WORKS!!
Had never heard of the brand before, but this thing is actually very good. It just WORKS, it's a very simple device, not complicated at all whatsoever. One of the best things I like is how simple the contents are to clean, there are not many pieces at all and the opening on the top is so large that it's very easy to put hands into it and fully clean it. Lastly, this thing just WORKS. Very inexpensive so I had serious doubts about buying this but after using it every night for the past 3 months in very cold dry northeast winter, this thing has worked every night to boost the humidity level in my bedroom and it's done it flawlessly. It's actually hard to believe how inexpensive and simple this item is yet how well it works. I almost NEVER write reviews, but I felt it was important to share my experience with how satisfied I am with this purchase. This humidifier isn't huge, but it's perfect for bedroom size if that's what you're looking for.
G**Y
I’ve been using this Dreo 4L Top Fill Humidifier for a little over a month now, and it has quickly become one of my favourite home gadgets. What I love: • Super Easy Refill & Cleaning: The top-fill design is a game changer. No more struggling to flip over a tank without spilling water. Cleaning takes just a couple of minutes. • Quiet Operation: At night it’s whisper-quiet (around 28 dB), so I can sleep peacefully without the constant humming that most humidifiers make. Perfect for light sleepers and babies. • Long Runtime: A full tank easily lasts through the night and beyond. On the lowest setting, I get well over a day of mist without needing a refill. • Night Light: The soft glow is calming and works perfectly as a nursery light. • Healthy Mist Output: Within the first week I noticed my skin felt better, my throat wasn’t dry in the mornings, and even my indoor plants looked healthier. One small issue: Since there’s no built-in filter, I did notice that tiny flies can sometimes get into the water tank if left uncovered. It’s not a big problem, but I recommend always keeping the lid closed. ✅ After a full month of daily use, I can say this humidifier is quiet, easy to use, long-lasting, and really improves room comfort. Highly recommend for bedrooms, nurseries, or even larger rooms. 👉 Helpful tip: Use filtered water for longer life and cleaner mist!
L**É
Great humidifier, good format for a slim bench (window bench in our case). Quiet operation, can barely hear it when on lowest level. Needs regular cleaning like all humidifiers, however this model is easier to disassemble and clean compared to other ones we’ve had. Be careful to not pour water into the steam outlet of the bottom part - that’s how I ruined our first one…
D**5
Ohne wenn und aber. Das Gerät verdient einen super, ein Dankeschön, ein hervorragend! Super leise, kaum zu hören, Luftbefeuchtung und die Nutzung von ätherischen Ölen funktionieren einwandfrei. Super leicht zu bedienen, fantastisches Preis-Leistungs-Verhältnis in diesem Fall!
4**4
Bought this because my cold turned chesty. Last year I developed bronchitis. Would like to avoid that. I've had smaller, cheaper humidifiers before and did not feel a difference. This one's different. No puddles forming despite sending up a lovely big plume of vapour. I didn't actually expect it to work and was amazed when after an hour the sensitive "sting" at the top of my chest had eased. Nice build. Feels like good quality. It's large but the shape takes up less space. Lovely stuff.
J**L
Its working well
Trustpilot
2 months ago
3 weeks ago