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💨 Elevate your air, elevate your life — smart hydration meets silent luxury.
The Levoit Classic 300S is a smart ultrasonic humidifier designed for large rooms up to 505 ft². Featuring a 6L tank with up to 60 hours runtime, whisper-quiet operation at 26dB, and smart app plus voice control compatibility, it delivers consistent, customizable humidity. Its auto mode maintains ideal moisture levels, while the easy top-fill design and BPA-free materials ensure health-conscious, low-maintenance use. Perfect for modern homes, nurseries, and offices seeking effortless air quality improvement.













| ASIN | B08HS45N13 |
| Best Sellers Rank | #4,493 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #7 in Humidifiers |
| Brand | Levoit |
| Brand Name | Levoit |
| Capacity | 6 liters |
| Color | Gray |
| Control Method | App |
| Customer Reviews | 4.4 out of 5 stars 33,215 Reviews |
| 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 |
| Special Feature | Auto Mode, Auto Shut Off, Easy to Clean, Quiet, Run all night, Smart Control, Top Fill |
| UPC | 810043373210 |
| Unit Count | 1 Count |
| 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 |
W**S
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.
P**M
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.
T**J
This works and is very quiet
The easiest set up ever. This humidifier is so easy to use and the fill tank fits under the faucet. The control panel is very user friendly, water flows into the air immediately when you turn it on. And it is so quiet! I did pair it with the app for timer and light control and it couldn’t be simpler. If you don’t want to use the app you can change the light and timer settings right on the control panel. It is efficient adding humidity into my very dry Arizona air. I am very happy with this purchase and recommend it!
T**B
Excellent Quality & Effectiveness
The “LEVOIT Classic300S Ultrasonic Smart Top Fill Humidifier worked very well for me. This’s is the first and only humidifier I’ve owned. It is exactly as pictured on Amazon, and functions well. It’s a quality product - performance and durability. I used it nearly 24/7 for two and half years. I opted for a large tank which turned out to be a good decision. The larger the tank, the less often it needs to be filled. Though I was overzealous in hoping it could humidify a very large open-concept living room and kitchen. It did pretty well considering I was trying to accommodate a larger area than it was meant to cover. I regularly used all three mist “output” options to adjust for how the weather impacted the amount of humidity I needed. The vent for the mist can rotate which I found very convenient. The light had just the right amount of illumination. The scent infuser is the only thing I didn’t use, due to allergies not the product. The water container is very easy to clean. Since I wasn’t used to having a humidifier I often forgot to clean the inside the base of the humidifier (where the water runs through the system). That led to a challenge. There were some tiny spaces that needed cleaning but couldn’t be reached by anything I tried - sponge, finger, mini scrub brush, toothbrush, tiny bottle brush. I think it was just the structural design that impacted the reachability of those area. (That might be true for most humidifiers. I don’t know since this was my first one.) Eventually those tiny areas inside the base developed a nasty build up. Ultimately I had to throw it out because it wasn’t healthy to continue using it. That was the only down side of this product. Because I wasn’t diligent in cleaning it sooner and more frequently, perhaps the cleaning issue could have been avoided. If I knew a way to reach those spaces, it would be the perfect humidifier and i would definitely buy it again. Overall it’s an excellent humidifier and very effective in its purpose. Based on this singular experience, I consider Levoit a quality brand, tried and true, and wouldn’t hesitate to buy their products.
T**D
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.
S**M
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.
M**A
Excellent product
So far, so good. I run a space heater in my master bedroom, which is large with high vaulted ceilings. After a couple of months, my skin and hair became extremely dry, but the worst part was my hands. They looked and felt chalky — it was awful. I bought this humidifier, and let me tell you, within 3 days I had complete symptom resolution. I was honestly shocked. So yes — it works amazingly well. It also looks great in my room, and I barely hear it running. You can definitely trust the auto sensor feature. I’ve only had to fill the tank once since buying it about a week ago. This is one of those purchases I made that I don’t second-guess at all. It’s an excellent humidifier. One more thing: I placed it on top of my tall wooden nightstand/bookcase, and there has been zero condensation or moisture damage around it.
D**B
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.
H**Y
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.
H**.
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!
K**P
Excellent Humidifier
Works well . Do use 220V to 110 converter , great humidifier
Z**N
Aparato moderno y eficiente.
Excelente. Tengo varios humidificadores. Este es moderno; fácil de recargar el agua, aun con el aparato en marcha. Manejo a través de la app y Wifi fácil, útil y cómodo. Puede cubrir una superficie tal y como se indica, pero hay que pensar en una ubicación adecuada. El higrómetro incorporado es relativamente fiable. Hay que repetir ajustes en Auto para encontrar punto óptimo de humedad relativa para que corresponda a la humedad en el recinto - disponiendo, claro está, de otros higrómetros para comparar. Muy silencioso. Hay que colocarlo a media altura para facilitar la recarga del agua (una jarra grande es muy adecuada) - el manejo de la tapa es fácil y no es necesario quitar el recipiente del cuerpo principal para rellenarlo bajo el grifo (salvo para la limpieza). Magnífica compra.
E**S
Simplemente genial
Utilizo humidificadores desde hace años y este modelo me ha encantado, tiene buena potencia, es super silencioso, tiene gran capacidad de agua por los que dura las 24 horas sin problemas. Lo recomiendo
Trustpilot
1 week ago
1 day ago