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💨 Elevate your air game—smart, silent, and seriously refreshing!
The Levoit Classic 300S is a 6-liter ultrasonic cool mist humidifier designed for large rooms up to 505 sq ft. It offers up to 60 hours of ultra-quiet operation at ≤26dB, smart auto humidity control via built-in sensors, and full remote management through the VeSync app with Alexa and Google Assistant compatibility. Its top-fill tank and included cleaning tools simplify maintenance, while an aroma pad tray supports essential oil diffusion. BPA-free and ETL certified, it’s perfect for bedrooms, nurseries, and offices seeking smart, healthy air quality solutions.













| Asin | B08HS45N13 |
| Best Sellers Rank | #4,919 in Home & Kitchen (See Top 100 in Home & Kitchen) #6 in Humidifiers |
| Brand Name | Levoit |
| Capacity | 6 liters |
| Color | Gray |
| Control Method | App |
| Customer Reviews | 4.4 4.4 out of 5 stars (38,543) 4.4 out of 5 stars |
| Filter Type | Wick |
| Floor Area | 505 square_feet |
| Included Components | 1 × 6L Ultrasonic Smart Top-Fill Humidifier, Aroma Pad, Cleaning Brush, User Manual, Water Filter Sponge |
| Item Dimensions D X W X H | 9.6"D x 7.5"W x 13.4"H |
| Item Shape | Square |
| Item Type Name | 6L Cool Mist Top Fill Oil Diffuser for Baby and Plants, Smart App Alexa Control, Rapid Humidification and Humidity Setting, Quiet Sleep Mode, Ultrasonic |
| Item Weight | 2 kg |
| Manufacture Year | 2021 |
| Manufacturer | LEVOIT |
| Material | BPA free, suitable for babies and adults |
| Model Name | Humidifiers for Bedroom Large Room Home |
| Model Number | Classic 300S |
| Number Of Packs | 1 |
| Operation Mode | Ultrasonic |
| Other Special Features Of The Product | Auto Mode, Auto Shut Off, Easy to Clean, Quiet, Run all night, Smart Control, Top Fill |
| Part Number | Classic 300S |
| Power Source | ETL Certified AC Power Adapter |
| Room Type | Bedroom,Baby,Room,Living Room,Nursery,Large room,home,Office |
| Runtime | 60 hours |
| Unit Count | 1 Count |
| Upc | 810043373210 |
| Voltage | 120 |
| Warranty Description | Satisfaction Guaranteed: Experiencing issues? Our California-based Customer Support Team is here to help. If your product is defective, don’t worry about shipping it back. We’ll send you a replacement right away! |
| Wattage | 26 watts |
User
Keeps My Home’s Humidity Just Right — Smart and Simple!
I’ve been using this Levoit smart humidifier for a few weeks now, and it’s made a noticeable difference in my home’s air quality. The app control is a nice touch — I can check and adjust humidity levels right from my phone without getting up, and voice control through my smart assistant makes it even more convenient for quick adjustments.What I appreciate most is how consistently it maintains the humidity level I set, rather than the up-and-down swings I got with my old humidifier. My skin and my plants (I have a few pothos and an orchid) have both been thriving since I started using it — the air just feels less dry overall, especially noticeable in the mornings.It’s quiet enough to run overnight without being distracting, and refilling the tank is simple. The only minor downside is that the app occasionally takes a few seconds to sync, but it’s a small trade-off for the convenience it offers.Overall, this is a great pick if you want a humidifier that’s both effective and genuinely “smart” — not just smart in name only. Highly recommend for anyone dealing with dry indoor air.
User
MONEY WELL SPENT!
I love the humidifier and especially the app! It is SO quiet I don’t even know it’s on and very easy to set up & run! Everything I need is right in the front & easy to get to like refilling the reservoir and adjusting the settings. I live in TX where humidity is high but this humidifier adjusts the mist accordingly. My husband is not coughing as much so the cool air has been effective in eliminating that! 🙏 I’m also using distilled water to keep it as clean as possible.I think I made a smart decision when I purchased the Classic 300S humidifier!❤️ I live in TX where humidity is high but the Classic 300S keeps the humidity low & and very comfortable.
User
Excellent Humidifier – Quiet, Effective & Perfect for Better Breathing
I purchased this humidifier to help improve my elderly dog’s breathing, and it has made a noticeable difference. Since using it, his nighttime coughing has reduced significantly, and he’s now sleeping comfortably through the night. It’s been wonderful to see such a positive improvement.One of my favourite features is the built-in humidity gauge, which makes it easy to monitor and maintain the ideal humidity level in the room. The soft night light is also a lovely touch, providing just enough light without being disruptive.Best of all, this humidifier is virtually silent. It runs so quietly that it doesn’t disturb our sleep at all, making it ideal for bedrooms, nurseries, or anyone looking for a quiet humidifier.
User
Great Device with Minor Flaws That Can Be Fixed
I’ve had this device for a couple weeks and have a few issues I’d like to point out:The ‘low’ setting produces a relatively loud high-pitched sound that I’m very sensitive to, so I cannot sleep with it on low. Fortunately, I use the auto setting, which rarely drops to low before turning off. The noise seems to come from the ultrasonic diaphragm, not the fan or other components, indicating the device is likely operating as intended. I've seen similar behavior in other ultrasonic humidifiers after trying several models. Ironically, medium/high settings are quieter than low and just produce more mist without that dreadful high-pitch sound.The app should not be necessary for all features. Out of the box, the available settings are low, medium, high, and auto. Auto defaults to 50% relative humidity, which is unreasonable, as no online resource I could find recommends an indoor relative humidity that high. For use in winter the commonly recommended range is 30-40%, and anything higher could encourage mold growth or excessive condensation. The app is needed to adjust the target humidity, which I strongly recommend you do, otherwise, you risk wasting power, water, and creating adverse effects from excess humidity. The device really should have an additional button to adjust target humidity, or repurpose an existing like holding the power level button or something which could be added in firmware.Auto mode also needs improvement. It runs the humidifier full blast until it exceeds your target by 5% and stops, not restarting until humidity falls 5% below the target. When I set my target to reasonable 35%, the room stayed very dry at under 30%, and the humidifier barely ran leaving the room quite uncomfortable. I adjusted to 45%, so it starts at 40% and runs to 50%, which I’ve found is a nice balance where the room mostly hangs closer to 40%. However, auto mode mostly runs on high, producing an excessive amount of vapor. I had to push the humidifier to the edge of my dresser to avoid moisture on the wall. I can only imagine using this on a shorter nightstand next to your bed risks soaking your floor or bed with how much mist this thing can kick out.Additionally, firmware updates are applied when connected to the app, indicating potential fixes for some issues I’ve encountered could be made. The 10% range in auto mode is far too large. I believe a 5% range would be much more ideal. I’d like to be able to set to 40%, it would then run until 42.5% and start again after falling to 37.5%, maintaining a more comfortable and controlled humidity level. Limiting mist power in auto would also help. My previous Winix humidifier allowed you to set the humidity target and limit power level. I would prefer limiting mist to medium to avoid any issues with excessive moisture when on the high setting.I also found a bug. The device allows turning off the display while activating the nightlight, but in the app, if you turn off the display, it reactivates when you turn on the nightlight. This requires manual adjustments on the device itself before bed, which is inconvenient and can be fixed in the app.Despite these issues, I still consider this a very good product. It's visually appealing, unlike most humidifiers which look like an unsightly medical device, and it works well. It puts water in the air, runs quietly (except on low if you're sensitive to high pitch sounds), and its 'smart' features work relatively well.
User
Amazing
I absolutely adore this product! It has a long lifespan, and the mist it produces is fantastic. However, it’s essential to clean it regularly to prevent any odor buildup. Despite this minor issue, I would definitely repurchase it. The size is perfect for any standard room. My room is quite spacious, and I wish I had opted for the larger one. One thing I would suggest is that the app could be improved with some updates. Apart from that, it’s an excellent product for both kids and adults.
User
The Perfect Solution for Winter Dryness
I bought this to help with the lack of humidity in my apartment during the winter, and it works perfectly. It does exactly what it claims to do, and the automatic settings make it incredibly easy to set up and forget. It has made a noticeable difference in my home’s air quality.
User
Easy & Effective
This product has been great so far! It is extremely quiet. Honestly I don’t think it makes any noise. It is easy to take apart and wash. The night light has 2 settings and it’s a the perfect amount of soft warm light. The light kind of looks like a lava lamp when turned on and that makes it soothing and fun to look at. I have this in my living room and it has upped the humidity. I bought a brita pitcher and I use filtered tap water. This humidifier is effective and adjustable. It also doesn’t leave a film or any residue like other humidifiers. I am really impressed.
User
Update 3/21/24: Tank Leaking - Neat Humidifier-Super easy to use and set up with app/phone
Update 9/26/24: After my old humidifier started leaking and died, I bought the LEVOIT OasisMist 1000S. This one has the entire tank at the bottom (which is huge, holds 10liters of water) and the top part that has the screen/humidifier parts that you can remove from the bottom/tank. The tank is just one piece of plastic instead of multiple pieces like my old one so I highly doubt it will end up leaking (knock on wood!). I think I would recommend this one, just because I know the tank is a lot more sturdy than the other one, the tank holds a lot more water (I refill every other day), and it does all the same things the other one did (control with your phone, that kind of stuff). I’ll update if something happens to this one lolUpdate 3/21/24: Pretty bummed because I really liked this humidifier (I purchased the 300s) but the tank started leaking a few days ago. Bought it and been using it since last November pretty much 24/7 except when I would leave to go out (if I would remember to turn it off lol).The other day I noticed the humidifier was showing the reading of 85% humidity which I knew was way off since I live in Colorado and even when I have the humidifier turned on it rarely gets up to 40% in my room. I noticed there was water all around the tank and on my carpet and I read that off readings on the humidifier was due to the sensor getting wet so I emptied the tank, cleaned the entire thing out plus the base and let it dry for a Cpl hours then filled it back up and ran it again. The % this time wasn’t as high but still off and the next hour or so it kept going down until it got to 40% but then I noticed it going back up. Went to check on it and water was all over the tank again so I knew there definitely was a leak. Put the (almost) full tank in my sink and the next morning there was only 1/4 water left in it. I’m thinking the water is leaking out from where the clear plastic on the sides meets the white plastic on the bottom of the tank. So I’m going to have to change my review from 5 stars to 2 because I only got a couple months out of it before it died. Still going to give it a 2 though because I really did like this humidifier. Being able to control and adjust the settings easily with my phone and it was super easy to clean. Just wish it the tank didn’t start leaking!Also btw in my previous review I said I didn’t notice any sediment/gunk forming in the bottom. I eventually did but it was easy to clean off in the sink with some warm water and a non-abrasive scrub brush. I definitely think changing the filters regularly helped keep that stuff from forming. I’m not so sure about the humidifier drops but I’ll still use them in my next humidifier I just purchased.————Love this humidifier. I live in CO where it is super dry especially during winter. I used a couple different ones but they always ended up with gunk/sediment in the bottom so I had to get rid of them. I know it’s better to use distilled water but I’m not paying for distilled water when I have to refill my humidifier every night.I didn’t use one last year and this year my nose and throat were so dry, I was getting nose bleeds and my throat hurt so bad I thought I was actually sick but decided to try a humidifier first to see if it would help. I liked this one because I could control it with my phone and it showed the humidity levels. After plugging it in it showed my rooms humidity level was 30% and having it on for 30 min my nose and throat felt so much better.I like how you can just pick up the tank from the bottom part, carry it to the sink then remove the lid and fill it up, really simple and easy. I also like that it has a filter (and options to buy more) because after a few refills I can see the filter start to change color so I feel like that’s helping keep gunk out from the bottom. I haven’t noticed any gunk/sediment and I’ve been using it continuously now for about two months but I also put “humidifier drops” in the water that I purchased on Amazon that supposedly helps stop buildup. Not sure if that is what’s helping.I also like the app. You can turn the humidifier on or off using the app, set a timer, put it on auto (which will turn off the humidifier at a certain humidity level) or set it on manual (where you choose how much moisture comes out). It also shows what the humidity level has been over time in the room you put the humidifier in and the humidifier itself shows on a little screen in front what the current humidity level is. There’s also a light inside the humidifier they call a “night light” you can turn on or off.All in all it’s a pretty neat humidifier. I guess it depends on how dry it is where you live because mine is set to shut off at 45% humidity and it rarely gets to that level so it’s basically on all the time except when I turn it off when I go out. So I usually have to refill it every night which is kind of a bummer but at least my nose/throat/skin isn’t so crazy dry anymore.I would definitely recommend this to anyone who wants a humidifier that they can control with their phone and is pretty easy to refill and use. App set up and pairing was super easy as well.
User
Excellent produit, mesure fiable et utilisation pratique
J'ai acheté ce produit notamment pour fournir un meilleur taux d'humidité à mes plantes d'intérieur. Pour le moment, rien à redire, il fonctionne parfaitement. La fonction 'Auto' lui permet de se déclencher dès que le niveau d'humidité passe sous un certain seuil et de s'arrêter de la même manière lorsque celui-ci atteint le niveau fixé. Il est aussi possible d'utiliser l'appareil en mode 'Manuel' en le déclenchant soit même et choisissant un niveau de brumisation. Le remplissage se fait très simplement par le haut et le contrôle via l'application VeSync est un petit plus pratique.
User
Nog nöjd
Bra funktioner men låter för mycket efter ett par år. Det hjälper inte att rengöra
User
Top Gerät
Nicht zu groß, kein Geräusch, funktioniert super
User
Works great!!
Works great for our living room (8x5m)I also got it to work in home assistant.I bought this model specifically for using it in home assistant and because of the good reviews.+: Big tank, silent, clear display, the cats stay away from it, app works great- : You have to create an account (I read somewhere that a credit card is needed. This is not true!).If the company takes down the service, the home assistant integration stops working.All together a great machine!
User
Excellent Humidifier
Works well . Do use 220V to 110 converter , great humidifier
Trustpilot
3 weeks ago
2 weeks ago