





💨 Transform your space from desert dry to oasis fresh—smart, silent, and sleek!
The LEVOIT Smart Warm&Cool Humidifier features a 4.5L tank with rapid 550 ml/h mist output covering up to 40㎡. Equipped with VortexMist technology, it increases humidity by 10% within 15 minutes. Control it remotely via the VeSync app to customize mist settings, schedules, and ambient lighting. Operating quietly at 26dB, it offers both warm and cool mist modes for all-season comfort. Its top-fill design simplifies refills and cleaning, making it ideal for bedrooms, nurseries, and plant care. Backed by a 2-year warranty, this Amazon exclusive humidifier blends smart tech with health-focused innovation.
| ASIN | B0BSFX9YJ2 |
| Best Sellers Rank | 575,046 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 237 in Single Room Humidifiers |
| Brand | Levoit |
| Brand Name | Levoit |
| Capacity | 4.5 litres |
| Colour | White |
| Control Method | Remote |
| Customer Reviews | 4.3 out of 5 stars 1,492 Reviews |
| Filter Type | Demineralization |
| Floor Area | 40 Square Meters |
| Floor area | 40 Square Meters |
| Included Components | 1 x Quick Start Guide, 1 x Smart Humidifier, Aroma Pad, Cleaning Brush, User Manual |
| Item Dimensions D x W x H | 27.4D x 30.4W x 15.2H centimetres |
| Item Shape | Rectangular |
| Item Type Name | Humidifier |
| Item Weight | 2.4 Kilograms |
| Manufacturer | LEVOIT |
| Material | Plastic |
| Model Name | LUH-O451S-WEU |
| Model Number | LUH-O451S-WUK |
| Number of Packs | 1 |
| Operation Mode | Automatic |
| Operation mode | Automatic |
| Other Special Features of the Product | Remote Control, Schedule, Smart Vesync APP, Timer, Warm and Cool Mist for Faster and Healthier Relief |
| Part Number | LUH-O451S-WUK |
| Power Source | Corded Electric |
| Product Warranty | 2 year manufacturer guarantee. |
| Room Type | Bedroom |
| Runtime | 45 hours |
| UPC | 810123677078 810043377041 |
| Unit Count | 1.0 count |
| Voltage | 220 Volts (AC) |
| Wattage | 280 watts |
G**A
Levoit do it really well
I bought this for two reasons, 1 - I had previously bought 3 of the same humidifiers from Argos that were the cheapest at £50 and worked fine but the design was terrible and leaked and broke after a year. For £30 more this offered a lot more and looked better design as well as... 2 - ... It was Levoit, I have an air purifier by them which has been great and worked really well. They seem to be spot on with pricing and it is quality stuff in my opinion. In brief, the main part I love about this machine is that it is easy to fill and clean. So many machines you have to fill from the bottom!?!, where as this fills from the top. it easily comes apart to fill and slot back on, as well as all the parts unclip easily to clean. after using for a while they do need cleaning so to be able to separate it out easily is great. Using it is simple, but if you download the app it makes it really useful. One thing I love about this machine which I didn't know it could do, is that you can set the humidity level you want for your room and then set it to auto and it keeps it at that level, turning off when its reached. So no more waking up in a rainforest atmosphere in the morning. Hot and cold air is a boon too as well as being able to turn the display off. It's light, it's silent, it works, you get spare parts with it! For the price of this, it's a little bit more expensive than a cheap humidifier but does everything you need and well.
O**W
Very quiet and does a great job
Having looked around for different humidifiers this one seemed to offer a good overall balance of price whilst being able to automatically maintain a set level of humidity. The unit looks good and has good capacity - I have it set to 70% and it is able to go at least two days without needing a refill. The noise levels are really low which helps as I'm a fussy sleeper. The app is also really good, so I can set it up and let it run remotely. It is super easy to refill and the coloured LED's are a nice touch but I don't use them. Build quality seems pretty good and it doesn't drip water around the unit. If you are after something you can set up and leave to it's own devices whilst being quiet - I'd recommend this.
M**S
Solid Build & Good Mist, But Auto Mode is Unreliable Due to Sensor
I recently purchased the LEVOIT Smart Warm & Cool Humidifier (4.5L), and have mixed feelings about it. Build Quality: The unit feels solid and well-constructed. It looks sturdy and seems like it will last. Mist Functions: Both the cool and warm mist options work effectively, delivering a good amount of humidity into the room. Smart Features & Connectivity: Pairing the humidifier with the mobile app was surprisingly easy. It connected smoothly to my 2.4 GHz Wi-Fi network using WPA/WPA2 security without any issues. The Major Problem: Inaccurate Humidity Sensor: This is the biggest downside and significantly impacts the unit's core functionality. The built-in humidity sensor seems highly inaccurate. Useless Auto Mode: Because the sensor is unreliable, the automatic mode doesn't work as intended. I set my desired humidity level to 60%. The humidifier runs until its display shows 60% and then shuts off. However, within just 2-3 minutes, the display reading plummets to around 50%, causing the unit to start up again. It's extremely unlikely that the actual room humidity drops by 10% that quickly. This constant, unnecessary cycling makes the automatic feature frustrating and essentially unusable if you rely on the built-in sensor. If you're buying this specifically for reliable, set-and-forget automatic humidity control based on its own sensor, you will likely be disappointed. It's a shame such a seemingly well-made device is let down by a critical component.
A**V
Pshhhhh
Does its job well. Very easy to clear. Works nicely with an app. The tank holds enough water for 2-3 nights. The only downside: when you switch the humidifier off and then on (for example, refilling the tank), it doesn't remember your last steam temperature setting. It is a very minor downside of an otherwise solid product.
J**R
Great product with good useful features
It’s surprisingly easy to set up with Alexa and very quiet in operation and will run easily overnight. It’s relatively modest in size despite the large tank to run for long periods. Control using Alexa voice is very useful in bedroom and has improved breathing and sleep. Only had it a week but will enjoy continued use. I like the scent feature which I have not yet used!
J**.
Not recommended
I really wanted to *love* this humidifier, but unfortunately there are somethings that really are not designed well. To keep it short and sweet; As others have mentioned, the built in sensor is completely wrong. This is probably fine if you dont need specific humidity, but if you need something more accurate, like for plants, then you have to keep fussing with it manually. Other thing is that it is TOTAL PAIN to clean. They recommend soaking and rinsing - however, this absolutely is not sufficient enough. It is has so many nooks and crannies that if you want to properly clean, you will need to get a tooth brush. If I knew what I knew now, I would have looked for an alternative.
A**R
Great purchase
Used to wake up with a dry, sore throat all the time, especially in winter with the radiator taking all the moisture out of the air. With the auto-mode on this, the humidity is kept at a constant and the ability to add essential oil is brilliant. I sleep like a baby now - no more sore throat in the morning and the bedroom smells of lavender ever night. Love it.
H**Y
FANTASTIC
This has to be one of the best purchases I have ever made. I suffer from post nasal drip & dry mouth, & this humidifier has helped me enormously by keeping my bedroom at a constant humidity, I also like that I can switch it on and off using Alexa, I just love the ambient light that is emitted.which you can turn off but I use it at night I think it gives a soothing glow to the bedroom. I have been using pure distilled water which works out quite expensive which means the humidifier doesn’t need cleaning as often as tap water, the distilled water I use is also suitable for animals & humans to drink so must be okay for me to breath in. Extremely happy with my purchase.
V**O
Muito bom
Muito simples e prático, quer a parte do funcionamento, quer no manuseamento do depósito ou enchimento e na colocação de óleos essenciais na bandeja própria. Tinha comprado um da Cecotec que tive de devolver porque não era pático nem funcional, ao contrário deste. Fiquei fã dos humidificadores Levoit!
R**T
flawed by design,Humidity-sensor if off by 30% , settings are only accessible by a weird app
For the price, you’d expect a device that performs decently, but this one falls short. The humidity sensor is wildly inaccurate—when the device indicates 69% humidity, three other sensors, including a calibrated Aranet4, show readings between 42% and 44%. The device features an automatic mode locked at 60%, and adjusting this requires installing a questionable Chinese app that requests personal information. Thankfully, I used a throwaway email for this. Additionally, we noticed some leakage around the device after just four hours of use. I’m relieved I only filled it with about a quarter of its water capacity. This is going back!
N**N
Useful
If you want a good sleep 😴 it could be useful.
T**5
LEVOIT OasisMist Smart – umidificatore 4,5L silenzioso con app, Alexa
Ho acquistato questo umidificatore LEVOIT OasisMist Smart e si è rivelato un prodotto eccellente. La capienza da 4,5 litri garantisce un’autonomia fino a 45 ore, perfetta per ambienti fino a 40㎡ senza doverlo ricaricare continuamente. Mi piace molto la possibilità di scegliere tra nebbia calda e fredda, utile sia in estate che in inverno. Inoltre, il funzionamento è estremamente silenzioso (<26dB), quindi si può usare anche in camera da letto senza alcun disturbo. La gestione tramite app e comandi vocali con Alexa è comodissima: posso programmare timer e livelli di umidità direttamente dal telefono. La funzione di aromaterapia e la luce personalizzabile aggiungono un tocco di relax in più. Il design a riempimento dall’alto (Top Fill) è pratico e rende la pulizia semplice e veloce. Dopo alcune settimane di utilizzo, l’aria è molto più confortevole e il benessere generale è migliorato. In sintesi, un umidificatore smart, silenzioso e versatile, che unisce funzionalità avanzate a un design elegante.
D**I
Je recommande
Humidificateur d’une simplicité d’utilisation ,d’entretien également, une connexion simple et efficace via son mobile et sa capacité de 4,5 l pour le volume d’une pièce considérable et suffisante. Je recommande ce produit pour sa qualité et son côté compact
Trustpilot
2 weeks ago
2 weeks ago