Customer reviews from dreo
Dreo - Ultrasonic 40'' Tall Cool Mist Humidifier for Bedroom, 4L Water Tank, 30H Runtime, 3 Mist Settings, Smart Control - White
Average customer rating
4.8
(111 Reviews)
Rating breakdown 111 reviews
5 Stars
90
4 Stars
19
3 Stars
2
2 Stars
0
1 Star
0
Customer Reviews for Dreo - Ultrasonic 40'' Tall Cool Mist Humidifier for Bedroom, 4L Water Tank, 30H Runtime, 3 Mist Settings, Smart Control - White
Customer Rating
5
Love this!
on September 15, 2025
Posted by: chrystalp7_4758
[This review was collected as part of a promotion.] This is such a step up from my last humidifier. We need one running all winter as our house gets so dry. It took less than 5 minutes to set up. I love the filter since we have crazy hard water and it destroyed my last one. The soft light is so nice at nighttime. Easy to use and i love the digital display so I can choose the percentage of humidity and not just low/med/hi. I can't wait to see how well it holds up this winter.
Written by a customer while visiting influenster.com
Customer Rating
5
Best product!
on September 15, 2025
Posted by: dominics52_7391
[This review was collected as part of a promotion.] Exceptional Humidifier — Quiet, Smart, and Powerful
I’ve been using the Dreo Smart Cool Mist Humidifier in my bedroom for a few weeks — and it’s exceeded every expectation. Here’s why I’m impressed:
Ultra‑Quiet: Even when running on higher mist settings, it’s whisper‑quiet. Great for sleeping through the night without background noise.
Consistent Mist Output: The cool mist is steady and fine — it brings moisture into the air without making surfaces soggy or leaving that heavy “wet air” feeling.
Convenient Smart Features: App control + voice assistant compatibility = love. I can set humidification schedules, automate based on humidity levels, and control it without having to get up.
Big Tobacco / Long Runtime: The tank holds enough water that I don’t feel like I’m refilling every few hours. It really lasts through the night (or more) on most settings.
Well Designed: The top‑fill style makes refilling easy and mess‑free. The controls are intuitive, the display is clean, and it looks modern rather than clunky.
I’ve been using the Dreo Smart Cool Mist Humidifier in my bedroom for a few weeks — and it’s exceeded every expectation. Here’s why I’m impressed:
Ultra‑Quiet: Even when running on higher mist settings, it’s whisper‑quiet. Great for sleeping through the night without background noise.
Consistent Mist Output: The cool mist is steady and fine — it brings moisture into the air without making surfaces soggy or leaving that heavy “wet air” feeling.
Convenient Smart Features: App control + voice assistant compatibility = love. I can set humidification schedules, automate based on humidity levels, and control it without having to get up.
Big Tobacco / Long Runtime: The tank holds enough water that I don’t feel like I’m refilling every few hours. It really lasts through the night (or more) on most settings.
Well Designed: The top‑fill style makes refilling easy and mess‑free. The controls are intuitive, the display is clean, and it looks modern rather than clunky.
Written by a customer while visiting influenster.com
Customer Rating
5
Quiet, effective, and easy-to-use humidifier with
on September 18, 2025
Posted by: razana18_4627
[This review was collected as part of a promotion.] The DREO Smart 4L Cool Mist Humidifier has been a great addition to my home. It’s super easy to set up and refill, and I love that it can be controlled with the app or remote. The mist output is strong and makes the room feel more comfortable quickly, especially during dry nights. It’s very quiet, so it doesn’t disturb sleep at all. The design is sleek and modern, and the tank size is just right to last through the night without constant refills. Cleaning and maintenance are simple, which makes it very practical. Definitely a reliable and effective humidifier.
Written by a customer while visiting influenster.com
Customer Rating
5
Quiet, easy to use humidifier with fun light effec
on September 18, 2025
Posted by: marys662_1918
[This review was collected as part of a promotion.] Loving this humidifier so far! It’s so quiet even on its highest setting and I love that the front panel tells you the humidity level around it. It was easy to set up and it’s nice that there’s an app to control it. You can even change the color of the light which is fun. I also appreciate that there’s a clear spot for you to put essential oils if you want to use them. Runs for a really long time
Written by a customer while visiting influenster.com
Customer Rating
5
Makes no noise
on September 18, 2025
Posted by: selinam42_9327
[This review was collected as part of a promotion.] The designis nice it gives led vibes the durability is long and just perfect the effectiveness is how it's supposed to be the maintenance is super easy and fast the noise level is great u can't even tell it's there
Written by a customer while visiting influenster.com
Customer Rating
5
Take your humidifier experience to the next level!
on September 18, 2025
Posted by: aimster2_4631
[This review was collected as part of a promotion.] DREO Cool Mist Humidifier offers a whisper quiet steady stream of mist to help humidify your home during the drier months of the year. Smart technology allows you to control all aspects of your humidifier from an app on your phone including mist and humidity levels as well as timer and schedule functions. Set the humidifier to auto option and the humidifier will automatically adjust the mist flow to preset humidity level. Once connected to the DREO app you can control with voice commands through Alexa, Siri, or Goggle Assistant (see video). Other features include an aromatherapy option and a demineralization cartridge to prevent mineral build keeping your humidifier running efficiently.
Written by a customer while visiting influenster.com
Customer Rating
5
Like
on September 19, 2025
Posted by: ortiz1986_8340
[This review was collected as part of a promotion.] Very good quality, I loved its color. The size is excellent, not too big, not too small. Its capacity is enough for my room. It effectively fulfills its purpose and keeps the room cool. It's not too loud.
Written by a customer while visiting influenster.com
Customer Rating
5
Best humidifier I’ve ever owned!
on September 22, 2025
Posted by: thekeptwife_539
[This review was collected as part of a promotion.] I’ve been using the DREO HM420S Cool Mist Humidifier and it’s easily one of the best humidifiers I’ve owned. It combines thoughtful design with powerful performance and earns a solid 5 stars across the board.
⸻
Why I love it
1. Clean, comfortable mist with built-in demineralization filter
The integrated filter helps remove minerals from tap water, which means no annoying white dust settling on furniture or floors. It keeps the mist ultrafine (about 5 microns) and healthier for breathing. I love not having to stress as much about using only distilled water.
The integrated filter helps remove minerals from tap water, which means no annoying white dust settling on furniture or floors. It keeps the mist ultrafine (about 5 microns) and healthier for breathing. I love not having to stress as much about using only distilled water.
2. Long runtime & large capacity
The 4-liter tank lasts around 30–36 hours on lower settings, which means I don’t need to refill it every night. Perfect for sleeping through the night without worrying about dry air.
The 4-liter tank lasts around 30–36 hours on lower settings, which means I don’t need to refill it every night. Perfect for sleeping through the night without worrying about dry air.
3. Powerful coverage with elevated mist
It pushes mist up to 40 inches high, so the humidity spreads evenly through the room without puddling on surfaces. My bedroom (around 280–300 ft²) feels balanced and comfortable within half an hour.
It pushes mist up to 40 inches high, so the humidity spreads evenly through the room without puddling on surfaces. My bedroom (around 280–300 ft²) feels balanced and comfortable within half an hour.
4. Quiet and peaceful
At only 28 dB, this humidifier is whisper-quiet. I can sleep with it running and never hear a thing.
At only 28 dB, this humidifier is whisper-quiet. I can sleep with it running and never hear a thing.
5. Smart controls + extras
• Easy app pairing and voice control via Alexa/Google.
• Adjustable mist levels and timer settings.
• Built-in aroma pad tray for a touch of essential oil fragrance (subtle but refreshing).
• Top-fill design makes refills and cleaning so much easier.
• Gentle night-light option that adds a cozy glow.
• Easy app pairing and voice control via Alexa/Google.
• Adjustable mist levels and timer settings.
• Built-in aroma pad tray for a touch of essential oil fragrance (subtle but refreshing).
• Top-fill design makes refills and cleaning so much easier.
• Gentle night-light option that adds a cozy glow.
⸻
Small notes (not deal breakers)
• You’ll still want to clean it weekly and descale monthly — the filter helps but doesn’t eliminate all buildup.
• The aroma pad is subtle, so it’s not a replacement for a strong diffuser (which I actually prefer — less overpowering).
• Initial app pairing takes a couple of minutes, but once it’s connected, it works flawlessly.
• You’ll still want to clean it weekly and descale monthly — the filter helps but doesn’t eliminate all buildup.
• The aroma pad is subtle, so it’s not a replacement for a strong diffuser (which I actually prefer — less overpowering).
• Initial app pairing takes a couple of minutes, but once it’s connected, it works flawlessly.
⸻
Final verdict
The DREO HM420S feels like a premium humidifier without the premium price tag. Between the demineralization filter, long runtime, quiet operation, and smart features, it has made a huge difference in my home’s air quality.
I wake up without dry throat or itchy skin, my plants are thriving, and there’s zero white dust on my furniture. If you’re looking for a smart, reliable, and low-maintenance humidifier for medium-sized rooms, this one is a must-buy. 🌟
Written by a customer while visiting influenster.com