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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

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 15
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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


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


Filter Type: Water Filter Sponge


Capacity: 4.5 Liters


Floor Area: 430 Square Feet


Operation Mode: Ultrasonic


Runtime: 45 hours


Room Type: Baby,Bedroom,Bedrooms


Voltage: 120 Volts


Wattage: 12 watts


Power Source: ETL Certified AC Power Adapter


Control Method: Voice


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


Item Weight: 5.3 Pounds


Material: BPA-Free Meterial, suitable for babies and adults


Brand Name: LEVOIT


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


Model Number: LUH-O451S-WUS


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


UPC: 810043375542


Global Trade Identification Number: 42


Manufacturer: LEVOIT


Item Type Name: Auto Customized Humidity, Ultrasonic Top Fill Oil Diffuser for Baby and Plants, Quiet, 4.5L


Color: White


Item Shape: Rectangular


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 15

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! Quite! Functionality locked behind an app :(
Color: White Size: 4.5L Humidifier
Okay, so this unit looks great, works super well, and is easy to clean! I purchased mine to help my skin in the winter/drier months. I like that it has an auto mode which maintains a humidity, different mist warmth settings, and is very quite. I DO have issues with it though. Features/functionality were purposefully left off of the actual unit in order to force buyers to use their app- yup they want access to your wifi, location, and all the other juicy privacy data they can sell; oh, and of course, when you open the app there's multiple notification marks to entice you into other menus which are advertising their other products. The unit has a sleep button- this will not work the way you think it would. It's not a setting for you to use at night when you sleep. It turns off any warmth setting, display, and runs *continually*. The first night I used it, I woke up to greenhouse of a room; when I turned the display back on, it read that the room was at 95% humidity. The sleep setting is just a low-noise, no-display mode, and needs constant tending to maintain a target humidity level- it does not auto shut off. Target humidity can be set, but you need to do it in the app. I see no reason the buttons on the device couldn't be multi-purpose. E.g. long-hold the auto button and enter a mode which allows you to adjust the target humidity with the other buttons. Same for the display, long-hold on/off or sleep to turn the display off. So how do you use this at night? Download the app... set your target humidity level, put the device in auto, adjust the warmth setting to your preference, and then scroll to the bottom of the app and find the toggle to turn off the display. Doing all this will let your device run at night with the display off and will turn itself off/on to maintain the target humidity. I honestly want to rate this lower because I just don't believe this needs an app (I'm very concerned about data privacy), and I know exactly why this was made the way it was...but it just works well. It's so quite, maintains humidity well, and is easy to maintain. ... show more
Reviewed in the United States on November 11, 2024 by VB
    • Great little humidifier!
Color: White Size: 4.5L Humidifier
Review Image by Dean in SC
Very happy with this purchase! I use it nightly to help prevent congestion & cough. It uses about 1/2 gal nightly if set on “auto” and the second output setting. I like that you can use cool and hot vapor. I also like that you can control the unit with the VeSync app on your phone. Being able to direct the vapor in two directions is definitely a plus! I haven’t run into any negatives. It’s very easy to clean, but I’m using distilled water always. This seems to lessen the need for daily cleaning. I rinse and dry it about once a week. ... show more
Reviewed in the United States on February 11, 2026 by Dean in SC

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