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LEVOIT

LEVOIT Humidifiers for Bedroom Home, Smart Warm and Cool Mist Air Humidifier for Large Room, Auto Customized Humidity, Fast Symptom Relief, Easy Top Fill, Essential Oil, Quiet, OasisMist4.5L, White

  • Based on 4,747 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Mar 24
Order within 4 hours and 49 seconds
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Color: White


Size: 4.5L Humidifier


Features

  • Rapid Moisture, Instant Relief: Dealing with sinuses, congestions, and restless sleep. Our humidifier with warm and cool mist, combined with a double duct design, offers quicker and more even humidification. Get instant relief and embrace life's comforts
  • Healthier & Warm Hydration: Enjoy your ideal humidifier choice. Its warm and cool mist features not only ensure a healthier humidifying process by reducing white dust from water but also offer safety with the warm mist temperature set between 40C and 60C
  • Personalize Your Comfort with Auto Mode: Tailor your preferred humidity effortlessly using the Vesync app or simply activate Auto Mode on the display to maintain humidity levels between 40 percent and 60 percent RH. Set it up and relish in the soothing ambiance today
  • Effortless Smart Control: Manage humidifiers for your bedroom and home remotely at anytime and anywhere. Plus, create schedules that sync with your daily routine, enabling the humidifier to seamlessly turn on and off according to your lifestyle
  • Much Easier for Refilling and Cleaning: Our top-fill design simplifies the process, with just one step to fill the 4.5L tank. No more spills or struggles. Cleaning is a breeze too, as the wide opening ensures easy access for a healthier environment

Description

Smart Control: Control settings, create schedules, and view real-time humidity levels through the free VeSync app. Seamlessly manage your humidifier from anywhere.Warm & Cool Mist: Choose between warm or cool mist settings to suit your environment, providing comfort year-round.Auto Mode: Set your preferred humidity level in the VeSync app and let Auto Mode maintain it for you.Aromatherapy: Add essential oils to the aroma pad to create a soothing, fragrant atmosphere in your space.Ultra-Quiet: Noise reduction technology keeps the sound level as low as 26dB—whisper-quiet operation for peaceful sleep or work.Dual 360° Nozzles: Customize mist output with two rotating nozzles, directing mist in different directions for complete room coverage.Top-Fill Design: Refill the tank easily by pouring water directly into the top—no need to flip anything over!Wide Coverage: Quickly humidify rooms sized between 215–430 ft² with efficient mist output for optimal comfort.Health Benefits: Maintains optimal humidity to help hydrate skin, relieve congestion, and reduce nightly coughing.What’s Included: 1 × Smart Humidifier 1 × Cleaning Brush 3 × Aroma Pads (1 pre-installed) 3 × Absorption Pads (1 pre-installed) 2 × Water Filter Sponges (1 pre-installed) 1 × User Manual 1 × Quick Start GuidePerfect for Your Space: Turn your room into a tropical haven, meditation space, or home spa with soothing mist and aromatherapy.Smart Control Features: Control settings, monitor humidity levels, set schedules and timers, and adjust mist output easily through the app.Why Choose This Humidifier: Enhance your comfort with versatile features, ultra-quiet operation, and customizable mist settings to suit your needs.Note: Please remember to use genuine LEVOIT accessories to ensure optimal performance and avoid potential issues with non-official parts.

Brand: LEVOIT


Special Feature: Aroma Diffuser, Auto Shut Off, Humidistat, Remote Control, Schedule, Smart Vesync APP, Voice Control, Warm and Cool Mist for Faster and Healthier Relief See more


Color: White


Capacity: 4.5 Liters


Floor Area: 430 Square Feet


Brand: LEVOIT


Special Feature: Aroma Diffuser, Auto Shut Off, Humidistat, Remote Control, Schedule, Smart Vesync APP, Voice Control, Warm and Cool Mist for Faster and Healthier Relief


Color: White


Floor Area: 430 Square Feet


Operation Mode: Ultrasonic


Product Dimensions: 10.8"D x 6"W x 11.97"H


Item Weight: 5.3 Pounds


Room Type: Baby,Bedroom,Bedrooms


Model Name: OasisMist Smart Cool and Warm Mist Humidifiers for Bedroom Large Room Home,


Included Components: 1 × 4.5-Liter Smart Warm & Cool Mist Humidifier, Aroma Pad, Cleaning Brush, Water Filter Sponge


Voltage: 120 Volts


Wattage: 12 watts


Shape: Rectangular


UPC: 810043375542


Global Trade Identification Number: 42


Manufacturer: LEVOIT


Smart Home Compatibility: Smart Home Compatible


Item Weight: 5.3 pounds


Item model number: LUH-O451S-WUS


Care instructions: Hand Wash


Assembly required: No


Number of pieces: 1


Batteries required: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Mar 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great product, works immediately
Color: White Size: 4.5L Humidifier
Wow - my sleep quality went from a 2 to a 10 in my house! I wasn’t sure why my sleep was so awful and it seems new heater devices in house just fried-dried up my house. I thought it was just typical wintertime but nope- this humidifier took my rooms from 29% to 57% and I couldn’t be happier in may 30?minutes tops! . The device shows you the humidity levels, gives you cool or warm mist and three levels too. Super easy to use and clean. The sound isn’t bad but the higher the mist level the more sound you hear so I put it in low overnight. To be able to breathe fully is priceless! The thing stays lit but I just face it backward at night. I’ve run this almost continuously 24/7 since I received it and I’ve had zero issues. One of the best buys I’ve made from Amazon. ... show more
Reviewed in the United States on February 3, 2026 by Limeywife
    • Best room humifier with automatic mode
Color: White Size: 4.5L Humidifier
Love this humidifier. It works great. Top fill is the way to go. Less chance of leaks and easy to fill. The auto mode is very nice it adjusts as needed, warm or cool. Very easy to use. Works great. Definitely recommend getting the extra pads and filters. They keep unit cleaner. I like that I can use functions without the app. Highly recommend this unit for smaller rooms. I have this unit and the LV600S which I highly recommend also. I like the lv600s better for you can adjust the humidity % and its larger tank, and the fill area. ... show more
Reviewed in the United States on February 21, 2026 by Bear-review
    • Love the humidifier, plenty of details to share
Color: White Size: 4.5L Humidifier
The noise level on this humidifier is so incredibly low that I barely know it’s on. Actually, I don’t know that it is on unless I look for the mist. Other than working reliably, having a quiet humidifier is important to me because I am incredibly noise sensitive. Even in a very quiet room, I don’t notice that’s this humidifier is on. Other features that are important to me: it is very sturdy and and yet lightweight. Easy to carry from them to room, very portable, and there are no leaks when the tank is full. I particularly like the sleep mode so I can sleep through the night without any light at all. This humidifier was the ONLY thing that made me comfortable when I had a very bad cold, with symptoms as bad as the flu. This cold was a beast and I was down for a week. Nothing relieved the total stuffiness in my nose except for this humidifier. Not nose sprays, not over-the-counter medication,nothing. But all I had to do was fill the tank on the humidifier then turn it on and…relief. I won’t say I had instant relief but within hours I did. Also, the heat level is high enough to be effective and yet low enough that I could lean over the mist to loosen the mucus in my nose and relieve the stuffiness. ... show more
Reviewed in the United States on March 5, 2026 by Jane C.
    • Works great!
Color: White Size: 4.5L Humidifier
Works great! Quickly raises the humidity level. Within one day we noticed a difference in our skin and sinuses! The only downside is the small tank needs frequent refills.. three to four times a day. However, it works so well, it’s worth it. I just ordered two more! The warm setting is great! Fairly quiet, but it does make a soft bubbling sound. Definitely recommend! I don’t often leave reviews but felt this one deserved it! ... show more
Reviewed in the United States on December 10, 2025 by Jenni Carrigan
    • Best humidifier
Color: White Size: 4.5L Humidifier
Best humidifier I've ever had and I've had a lot. I like that it is easy to clean, easy to fill, is quiet, has a warm mist option and large capacity. I have learned to use distilled or purified water in any humidifier to prevent mineral build-up (or mineral dust from cold vapor humidifiers).
Reviewed in the United States on February 19, 2026 by Niphty
    • Great Humidifier
Color: White Size: 4.5L Humidifier
Humidifier works great and keeps the bedroom at a steady humidity. With a humidifier like this, use RO or distilled water, tap water will cause a white dust to disperse over time. Super quiet and can’t hear it operating in auto mode. The app is super easy to use and I would utilize that more than the actual controls on the humidifier. The humidifier relative humidity sensor is fairly accurate, but I’d highly recommend getting a second hydrometer and putting it somewhere else in the room, not next to the humidifier to test the real humidity. Few negatives but it doesn’t change the 5 star rating. The sleep mode function is basically useless as it mists at the lowest level humidity setting with no programming to stop at certain level so the humidity climbs to way too high levels. There is no screen display off button at the unit and you have to use the app to turn off the display if the display is providing too much light in the room at night. These are minor control nuances that they could do better in a future model. ... show more
Reviewed in the United States on November 23, 2025 by Court
    • quit and effective humidifier
Color: Black Size: 6L Humidifier
Very quiet and easy to control via app. The tank lasts a long time and both warm and cool mist options are nice depending on the season. Great for dry air conditions. it also has a very good mist output.
Reviewed in the United States on February 11, 2026 by Andrea
    • Great Humidifier
Color: White Size: 4.5L Humidifier
This humidifier is great. It has a large tank size, easy to clean, smart app features, can auto tune your humidifier to set your level to an exact percentage, is quiet and can go no led mode to keep your peace while sleeping, no smell but has an option for essential oils, easy to fit, and great price. I haven't had mold grow, but I have also washed it so that would've prevented some issues, but that is just basic care that you need to do no matter what. I think if you want a humidifier, this is one of the best choices on the market ... show more
Reviewed in the United States on January 28, 2026 by Mason LaMaster

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