Search  for anything...
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 12,148 reviews
Condition: New
Checking for the best price...
$79.98 Why this price?
Labor Day Deal · 11% off was $89.99

Buy Now, Pay Later

As low as $13.33 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Sep 4
Order within 4 hours and 25 minutes
Available payment plans shown during checkout

Recently Viewed

Style: Smart Warm&Cool Mist


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 and 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
  • Fragrance Tailored for You: Feeling tired after a long day. Add 2-3 drops of your favorite essential oil to the tray and indulge in a unique, fragrant, and soothing home atmosphere
  • Convenient Designs: Enjoy dual mist nozzles for easy mist direction adjustment and a user-friendly handle design for quick water tank maintenance, enhancing your experience
  • Near-Silent Operation: Upgraded triple noise reduction technology helps operate at minimum levels for warm mist, making it a great bedroom humidifier. Turn off display lights and enjoy this peaceful bedtime
  • Tip: For the well-being of you and your family, as well as prolong the life of your humidifier, it's advisable to clean and throughly dry the humidifier after use. Refer to the user manual for detailed instructions on cleaning and storage of humidifier

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, Remote Control, Schedule, Smart Vesync APP, Timer, Warm and Cool Mist for Faster and Healthier Relief See more


Color: White


Filter Type: Water Filter Sponge


Floor Area: 430 Square Feet


Brand: LEVOIT


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


Color: White


Filter Type: Water Filter Sponge


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, 1 × Quick Start Guide, Aroma Pad, Cleaning Brush, User Manual, Water Filter Sponge


Voltage: 120 Volts


Wattage: 12 watts


Control Method: App


Shape: Rectangular


UPC: 810043375542


Global Trade Identification Number: 42


Manufacturer: LEVOIT


Item Weight: 5.3 pounds


Item model number: LUH-O451S-WUS


Date First Available: August 9, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 4

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Excellent humidifier
Style: Smart Warm&Cool Mist Size: 4.5L
This works great. Does a great job humidifying a large size room. Stonger than expected. Very easy to fill with water. Very easy to clean. Extremely quiet. The app function is easy to use and a great addition. Warm and cold mist function are a great option.
Reviewed in the United States on June 14, 2025 by Reds07
    • Great humidifier
Style: Smart Warm&Cool Mist Size: 4.5L
Excellent little humidifer. I don't use the app, so maybe that's not very good, but i don't have to use the app as it works great by itself. The tub on top is easy to remove, carry, fill, and reinsert without spilling a drop of water. The buttons are all easy and useful and the humidity indicator is very intuitive. The ONLY problem i could possibly have with this product is that the 'auto' feature, if you turn the humidifier off with it enabled, will spew mist for about a minute when turning it back on, even if humidity is higher than the max. The indicator said 80% and it still spewed mist after turning it on. It's also virtually silent, if it makes any noise it blends into the background and is perfect white noise to sleep. I am almost angry this company doesn't make dehumidifiers cause i'm sure they would be just as good. ... show more
Reviewed in the United States on July 11, 2025 by Buckshot2825
    • Efficient
Style: Smart Warm&Cool Mist Size: 4.5L
This has to be the best humidifier made. It works well, has a large reservoir, has a night mode, is quiet, fairly easy to clean and has replacement parts. We bought one for each room!
Reviewed in the United States on August 14, 2025 by ping
    • A good unit... except for the hygrometer
Style: Smart Cool&Warm Mist 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
    • Great Quality!!
Style: Smart Warm&Cool Mist Size: 4.5L
Review Image by Breilyn Conrad Breilyn Conrad
Levoit Humidifier Review I absolutely love my Levoit humidifier! From the moment I set it up, I found it incredibly easy to use, and the app integration is a game changer. Being able to control the humidifier directly from my phone adds a level of convenience that I didn't know I needed. The app provides real-time information on the humidity levels in my home, allowing me to make adjustments on the fly. This feature has been particularly helpful in maintaining a comfortable environment, especially during dry seasons. Overall, the Levoit humidifier has exceeded my expectations with its ease of use, smart technology, and effective performance. I highly recommend it to anyone looking to improve their indoor air quality! ... show more
Reviewed in the United States on July 13, 2025 by Breilyn Conrad Breilyn Conrad
    • The Best Humidifier I’ve Ever Owned – Worth Every Penny! A Game-Changer for Comfort and Health
Style: Smart Warm&Cool Mist Size: 4.5L
I recently bought the Levoit OasisMist 450S Smart Humidifier, and it has honestly changed our lives—especially for my daughter. She used to get sick often during the winter with constant coughing and congestion at night. Since using this humidifier, she’s not feeling nearly as sick anymore, and her nighttime congestion has improved dramatically. It even helps reduce her cough and cold symptoms within just one night. I was blown away by how fast it worked. What I Love: • Warm & Cool Mist: We mostly use the warm mist at night, and it’s been amazing for clearing up stuffy noses. The cool mist is great during the day or in warmer weather. • Smart Controls: I use the VeSync app to control everything from my phone. I can check humidity levels, set timers, or just adjust the mist level without getting up. • Auto Mode: This is one of my favorite features—it senses the room’s humidity and adjusts automatically, so I don’t have to think about it. • Large Tank & Top Fill: The 4.5L tank lasts through the night and then some. Top-filling is super convenient, and it’s easy to clean. • Quiet Operation: It runs silently, so it doesn’t disturb my daughter’s sleep at all. • Aromatherapy Option: I add a couple of drops of lavender oil at bedtime, and it helps create a calm, spa-like vibe in her room. We use the aroma box regularly, and when my daughter is sick, I put Vicks drops on aroma pad and place it near the nozzle. It works like a charm to open up her airways and ease her breathing overnight. Final Thoughts: If your kids struggle with winter colds, coughs, or nighttime stuffiness, I highly recommend this humidifier. It made a noticeable difference after just one night, and it’s now part of our daily routine. Levoit really nailed it with the OasisMist 450S—worth every penny! ... show more
Reviewed in the United States on May 27, 2025 by KG
    • Super quiet
Style: Smart Warm&Cool Mist Size: 4.5L
I've been pretty impressed with this humidifier so far. It's easy to fill and whisper quiet. I appreciate that I can use the function on my phone to adjust the settings and turn the unit off and on. Also, I love that you can turn off the exterior lights. Overall, so far, no complaints.
Reviewed in the United States on August 15, 2025 by Angie B.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...