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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 Friday, Jan 9
Order within 4 hours and 51 minutes
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Color: White


Size: 4.5L


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, Humidistat, Schedule, Smart Vesync APP, 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, Humidistat, Schedule, Smart Vesync APP, 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


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: Friday, Jan 9

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 Humidifier
Color: White Size: 4.5L
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
    • Warm and cool mist options are great
Color: White Size: 4.5L
Very happy with this humidifier. The warm and cool mist options are a great feature and make it easy to adjust depending on the season. It performs consistently and keeps humidity levels right where they should be. I also like that you can add essential oils and scents — it’s a nice bonus and works exactly as expected without any hassle. Controls are intuitive, and everything just works. Well-designed, reliable, and versatile. Solid product from Levoit. ... show more
Reviewed in the United States on January 2, 2026 by Tony
    • Hot and Cool Mist! Quiet and Smart - Works Seamlessly with Essential Oils.
Color: White Size: 4.5L
Review Image by Rick U Rick U
It's a compact humidifier that produces an impressive amount of mist for its size. It operates very quietly, and the essential oil filter is easy to clean with just plain water, leaving no lingering scent behind. I have to admit, I wasn’t expecting the filters to be so easy to clean. It provides both hot and cool mist that works easily through the VeSync app or directly from the front panel. Highly recommended! ... show more
Reviewed in the United States on December 5, 2025 by Rick U Rick U
    • A good unit... except for the hygrometer
Color: Black Size: 6L
PROS: * Nice large size. I poured in a whole gallon of distilled water and there was still room left in the reservoir. * The water reservoir comes out completely for cleaning and has a handle for easy carrying. * The controls are simple, including both cool and warm mist options, a timer, a sleep function, and several options for rate. * The smart app is convenient if you want to control multiple units in various parts of the house, and there is a scheduling feature. * There are two adjustable nozzles. * Nice, quiet operation. CONS: * I chose this model pver some others for its built-in hygrometer, but it’s highly inaccurate. I tested it against three other hygrometers, moving them every 15 minutes for an hour. All three read 35–36%, while this unit showed 59%. Even without these visual comparisons, the air didn’t feel even close to as humid as the reading suggested. * Since I have other hygrometers, the built-in one doesn't need to be precise. However, without it, the app is useful only as a remote control. The app tracks humidity over time, but its reports are meaningless without accurate readings from the machine. * There is a little side door with a pad for essential oils, but I'm not sure much, if any, of the EOs get into the mist. I couldn't smell them at all. ... show more
Reviewed in the United States on March 7, 2025 by WackyMom
    • Quiet, Effective and worth every penny
Color: White Size: 4.5L
I’ve been using the LEVOIT OasisMist 4.5L humidifier in my bedroom for several weeks, and it has exceeded my expectations in multiple ways. The combination of warm and cool mist, plus the ability to set custom humidity levels, has made it easy to keep my room comfortable throughout the day and night. For reference I suffer from Sjogren's syndrome and this humidifier has been my saving grace. What stands out most is how quiet this humidifier is — even on higher settings it barely makes a sound, which is great for light sleepers. The top-fill design is another huge advantage; refilling it takes only a few seconds, and cleaning is simple compared to other humidifiers I’ve owned. You can turn off the light which was another contributing factor as to why i purchased this humidifier. Performance-wise, the 4.5L tank easily lasts through the night, and the unit increases humidity noticeably fast, which helped reduce dry throat and sinus discomfort during colder months. Overall, this humidifier is well-designed, efficient, and user-friendly. If you’re looking for a dependable option for a bedroom or medium-to-large room, the OasisMist is the way to go. ... show more
Reviewed in the United States on November 22, 2025 by Honest reviewer
    • Works awesome
Color: White Size: 4.5L
This humidifier is AWESOME! Works like a charm! If you have any issues with breathing this machine is great! Gallon of water can last all day or night with the simple control features! You can control time, water usage and steam output! Can have shut off automatically by timer! There is also a phone app if you want to control remote! This unit can disperse Hot or Cold steam per controls! This humidifier can do a very large area in a decent amount of time and smaller areas faster! ... show more
Reviewed in the United States on November 28, 2025 by Martin M
    • Absolutely recommend hands down
Color: White Size: 4.5L
Review Image by Rachael eaton Rachael eaton
Review Image by Rachael eaton Rachael eaton
Review Image by Rachael eaton Rachael eaton
Review Image by Rachael eaton Rachael eaton
I ordered this because I have bronchitis. I’ve now been using this for 2 weeks and absolutely LOVE THIS! It works wonderful with the choice to level of heat and the switch to cold. One great feature I also love is that you can select a wide range of fan levels!!!! It helps keep the water in longer when I’m sitting on the couch all day and set for night time. The other great thing is YOU CAN SELECT YOUR OWN ESSENTIAL OILS!!!!!! So you can run this for not just health but to have your home smell clean or fit the holidays! Right now I’m using eucalyptus to help my breathing but I am ready with others for the holidays. You can schedule this, put in auto or do manual settings to your liking. Cleaning is a BREEZE!!! The refills for the filters and sense pads and so inexpensive as well and comes with lots of them. Yes USE distilled water! Reason is that it Kris your machine cleaner longer and you don’t have to Descale more often. HIGHLY RECOMMEND THIS!!!! ... show more
Reviewed in the United States on October 31, 2025 by Rachael eaton Rachael eaton

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