The Best Ultrasonic Humidifiers for Large Room in 2024 – Buyer’s Guide

Every home should be a safe and clean space to live in. But when the humidity is low, you might not know that you’re slowly compromising your health and your family’s. 

It may lead to dry hair and skin, nasal congestion, chapped lips, itching, and other respiratory issues that can make you and your family more vulnerable to illnesses. Therefore, you should consider buying an ultrasonic humidifier.

Putting up an ultrasonic humidifier promotes a better and healthy environment. While it adds ample moisture to the air, this innovative machine also helps relieve dry, scratchy throats and dry nasal passages. 

It also keeps your skin and hair healthy, helps improve sleep, and lulls you to sleep with its quiet operation. And to make sure you have adequate moisture in your home, the best ultrasonic humidifier for large rooms must be the one you need.

To help you out, we’ve compiled a roundup of the Top 10 Best Ultrasonic Humidifiers for Large Room along with an in-depth buying guide. Keep reading!

What is an Ultrasonic Humidifier?

Ultrasonic humidifiers rely on a metal plate that makes sound vibrations at an ultrasonic frequency, unlike Evaporative humidifiers that utilize fans to evaporate the water inside and expel the water vapor into the air. Such vibrations, moreover, are responsible for producing very fine water mist in which the humidifier diffuses to add moisture into the air.

Generally, ultrasonic humidifiers operate a lot quieter than evaporative humidifiers. It is because of the ultrasonic frequency of the sound waves that are inaudible to humans. Therefore, you can soothe yourself with a good and sound sleep while benefiting from the moisture the humidifier expels. Without any filters to replace and heat to use, they require minimal cleaning and electricity.

List of the Top 9 Ultrasonic Humidifier for Large Room

If you’re considering getting your own Ultrasonic Humidifier for your home, we’ve narrowed down your options with our top 10 reviews of the best ultrasonic humidifiers for a large room.

PowerPure 5000 Warm & Cool Mist Ultrasonic Humidifier

PowerPure 5000 Warm & Cool Mist Ultrasonic Humidifier - Permanent Filter - LCD Display - Remote Control Included - Black
  • Humidifies spaces up to 700 square feet in size. Ultrasonic humidifier offers warm or cool mist humidification.
  • Near-silent operation is perfect for bedroom or living spaces.
  • Features a permanent, money-saving ceramic filter that is designed to soften and clean the water in your water tank. No replacement parts means no long term expenses.
  • Auto shut-off feature turns the humidifier off when the water tank is empty.
  • LCD control panel with soft-touch buttons. Remote control included.

To fill out your large room with enough moisture, this ultrasonic humidifier from PowerPure surely is worth a try. It offers a great capacity level that can humidify a large 700-feet room with up to 3000 gallons of moisture. It is lightweight and isn’t very big and therefore, won’t consume so much space on your end table.

You may also notice the soft-touch buttons and LCD screen that allow you to adjust the humidifier easily. It offers settings for the timer, humidity level, and cool or warm mist function. If you’re also an allergy sufferer and you need to clear the air from pollen, allergens, molds, bacteria, and many types of viruses, this humidifier also works as a generator that produces negative ions.

While you benefit from better air quality, PowerPure also ensures the safety of your children with its Safety Lock that keeps the water tank attached at all times.

Key Features

  • Can accommodate a large room up to 700 feet
  • Can emit up to 3000 gallons of moisture
  • Works as a generator to produce negative ions
  • Lightweight and portable
  • Easy to control with soft-touch buttons and LCD screen

GENIANI Top Fill Cool Mist Humidifiers for Bedroom & Essential Oil Diffuser 

GENIANI Ultrasonic Cool Mist Humidifier for Bedroom, Large Rooms, Home, 4L - Easy Fill & Clean Humidifier for Plants w/Auto Shut-off, 40H Runtime - Quiet, Top Fill Air Humidifier & Vaporizer for Baby
  • 𝐈𝐌𝐏𝐑𝐄𝐒𝐒𝐈𝐕𝐄, 𝐋𝐀𝐑𝐆𝐄 𝐂𝐎𝐕𝐄𝐑𝐀𝐆𝐄 𝐀𝐑𝐄𝐀: Our Geniani Humidifiers for Home offer a maximum coverage range of up to 376 sq ft, making it the perfect humidifier large room accessory. The large humidifier is a great fit for any indoor space, from your living room or study to your garage or yoga studio. This cool mist humidifier fine tunes humidity levels, offering optimal moisture for improved breathing and a comfortable living space. Change your world & find balance by adding a humidifier to your home.
  • 𝐃𝐑𝐘 𝐀𝐈𝐑 𝐑𝐄𝐋𝐈𝐄𝐅: Do you ever wake up with a dry, sore feeling in your throat or nose? Do you suffer from cracked skin in the colder months? Our humidifiers for bedroom offer instant dryness relief with a continuous, steady, cool flowing mist. This is the best cool mist humidifier for those with dry skin, irritated, itchy eyes, respiratory issues, and more! Enhance your wellbeing and say goodbye to discomfort and itching with the Geniani air humidifiers for bedroom.
  • 𝐀𝐑𝐎𝐌𝐀𝐓𝐇𝐄𝐑𝐀𝐏𝐘 𝐃𝐈𝐅𝐅𝐔𝐒𝐄𝐑 𝐅𝐄𝐀𝐓𝐔𝐑𝐄: The Huron Cool Mist Humidifiers for Bedroom offer the added feature of working as an aromatherapy diffuser so you can infuse your room humidifiers for bedroom quiet easy clean with your favorite, calming scents. Enjoy the soothing effects of essential oils and truly allow yourself to relax. Set the mood in any room of your home by adding a few drops of any essential oil into the specified compartment and you’ll escape into a sweet smelling paradise in no time.
  • 𝐃𝐄𝐒𝐈𝐆𝐍𝐄𝐃 𝐅𝐎𝐑 𝐄𝐀𝐒𝐘 𝐔𝐒𝐄 & 𝐔𝐋𝐓𝐑𝐀 𝐒𝐈𝐋𝐄𝐍𝐓 𝐎𝐏𝐄𝐑𝐀𝐓𝐈𝐎𝐍: Our bedroom humidifier for bedroom with essential oils is easy to set up & use with single button functionality. Our cool mist humidifier works to moisturize your room while functioning silently, ensuring no disruption to your good night’s sleep. Perfect for your little ones, help babies & small children breathe easier & stay asleep throughout the night. The bedroom humidifier for adults provides a relaxed, calming, & soothing environment.
  • 𝐒𝐌𝐀𝐑𝐓 𝐇𝐔𝐌𝐈𝐃𝐈𝐓𝐘 𝐂𝐎𝐍𝐓𝐑𝐎𝐋 𝐌𝐎𝐃𝐄: Manually select from three cool mist modes or use our integrated smart humidity sensor to automatically adjust & maintain optimal humidity. Your indoor plants will thrive in the perfectly moistened conditions created by your Huron. An automated turn off safety feature allows you to set and forget your humidifier for plants as it detects an empty tank & turns itself off. Our plant humidifier is easy to refill - simply remove the top cover and refill the tank!

Besides its sleek and sophisticated design, Geniani ultrasonic humidifier highlights its 2-in-1 function; it works as a humidifier and a diffuser. You can enjoy a cool mist that enhances the moisture in your skin and lips while you indulge in the aromatic scent of essential oils. This humidifier also allows you to revel in a peaceful sleep because it stays incredibly quiet as it functions.

With its 4-liter capacity, this innovative machine can accommodate medium to large rooms up to 220 square feet and works up to 18 hours with the highest setting. The coverage may not be as big as the other humidifiers, but Geniani does a great job of providing ample moisture in the air. You can customize the humidity level and choose between 3 mist settings with the intuitive manual control buttons. And if you need to clean and refill the tank, it’s definitely easy as a breeze!

Key Features

  • 4-liter water tank
  • Works as a humidifier and diffuser
  • Can accommodate rooms up to 220 square feet
  • Customizable humidity level
  • Can last up to 18 hours with the highest setting
  • Has 3 mist settings – low, medium, and high speed

TTLIFE Ultrasonic Humidifiers Large Room

If you’re looking for a humidifier that can last throughout the day, you can consider this one from TTLIFE. Engineered with a 5.5-liter capacity, it works up to 40 hours and can fill the room with adequate moisture at a fog level. And with its substantial size, you can save more time from frequent refilling. It can handle large rooms up to 750 square feet and let you luxuriate in soothing and healthy air quality.

This ultrasonic humidifier offers dual modes that deliver respective health benefits – one setting for the cool mist and the other one for thermal spray. Engineered with soft-touch buttons and an LED screen, you can easily optimize the settings according to your preferred humidity level and scheduled time. There are 3 mist settings and humidity modes for ample moisture.

Key Features

  • 5-liter water tank
  • Can handle large rooms up to 750 square feet
  • Reduces frequent water refilling
  • Programmed with dual modes – thermal spray and cool mist
  • Has 3 smart modes – Constant Humidity, Auto mode, and Sleep mode
  • Has 3 mist settings
  • Can function up to 40 hours at fog level

LEVOIT Humidifiers for Large Room Bedroom (6L)

LEVOIT Humidifiers for Bedroom Large Room Home, 6L Warm and Cool Mist Ultrasonic Air Vaporizer for Plants and Whole House, Built-in Humidity Sensor, Essential Oil Diffuser, Whisper Quiet, Timer, White
  • 𝙃𝙄𝙂𝙃-𝙀𝙁𝙁𝙄𝘾𝙄𝙀𝙉𝘾𝙔, 𝙁𝙊𝙍 𝙒𝙃𝙊𝙇𝙀 𝙃𝙊𝙈𝙀: It provides humidification speeds 4× faster than others, which can quickly cover 753ft² of the area and last up to 50 hours. You can customize the target humidity you need, and feel hands-free with auto mode.
  • 𝙋𝘼𝙏𝙀𝙉𝙏 𝙒𝘼𝙍𝙈 𝙈𝙄𝙎𝙏 𝙏𝙀𝘾𝙃 𝙁𝙊𝙍 𝘽𝙀𝘿𝙍𝙊𝙊𝙈: It raises RH 10% in 20mins, providing greater relief from symptoms caused by dir air. Near-silent noise levels and all lights off help you sleep undisturbed
  • 𝙋𝙀𝙍𝙁𝙀𝘾𝙏 𝙁𝙊𝙍 𝙇𝘼𝙍𝙂𝙀 𝙍𝙊𝙊𝙈𝙎: With a mist output of up to 500 mL/hr, it can easily handle spaces as large as 753 ft² / 70 m². The large 6-liter tank allows you to humidify continuously for up to 50 hours, saving you the trouble of frequent refills
  • 𝘼𝙐𝙏𝙊𝙈𝘼𝙏𝙄𝘾 𝙏𝙐𝙍𝙉 𝙊𝙉 & 𝙊𝙁𝙁: With a built-in sensor, Auto Mode adjusts mist levels according to your settings to maintain a healthy humidity level
  • 𝙃𝙐𝙈𝙄𝘿𝙄𝙏𝙔 𝙐𝙋 𝙏𝙊 𝙔𝙊𝙐: You can customize the ideal humidity percentage for your house plant, baby, or beloved guitar

For an ultrasonic humidifier that saves you from hassle cleaning, this one from LEVOIT makes it all easy with maintenance and cleaning. What’s also great about this humidifier is its large capacity which can accommodate rooms up to 750 square feet. Designed with a 6-liter capacity level, it delivers efficient and continuous mist that can last up to 36 hours at the lowest setting.

Besides its hefty capacity, you can also choose between warm and cool mist that provide respective health benefits. It also allows you to indulge in a pure, clean, and fragrant room with the use of essential oils. And if you want to activate the humidifier on schedule, it has a timer setting that you can adjust. Plus, it automatically shuts off when the water tank becomes empty.

Key Features

  • 6-liter water tank
  • Can accommodate rooms up to 750 square feet
  • Delivers continuous mist up to 36 hours at the lowest setting
  • Can be used with essential oils
  • Has options for warm and cool mist
  • Easy to clean and maintain
  • Has auto shut-off function

Vogvigo Humidifiers Large Room

When you’re after the whisper-quiet operation, this ultrasonic humidifier keeps it low and easy with the noise as it diffuses mist. While it lulls you at night with peaceful sleep, this 5.5-liter humidifier functions continuously for up to 40 hours, filling your room with enough humidity levels. Whether it is a cool or warm mist, you can adjust the settings and opt for your preferred type of mist.

Another impressive feature of this humidifier is its ability to cover an area up to 750 square feet. You can enhance the level of moisture in the air whether it is in a master bedroom or living room. Crafted with an aromatherapy function, you can use this machine to treat yourself to a calm, clean, and aromatic environment with the use of essential oils.

Key Features

  • 5-liter water tank
  • Quiet operation
  • Can cover up to 750-square feet of area
  • Has aromatherapy function
  • Has customizable settings for warm and cool mist
  • Has 3 mist settings

Homech 6L Cool Mist Humidifiers Quiet Ultrasonic Humidifier

Orgtoy 6L Humidifiers for Large Room Bedroom, 26dB Cool Mist Humidifier for Home Office Plant with Auto Shut Off Night Light Adjustable 360° Rotation Nozzle 20-60H Humidifying White Gift for Valentine
  • [6L Large Water Tank Capacity & Mist Adjustable]: Over 1.6 gallons of water lasts for 20-60 hour working time on a full tank; designed to humidify the air in rooms up to 20-40 m² / 215-430 ft². Designed with dial knob mist control, you can adjust humidifiers' mist output volume to ideal humidity level for comfort and health.
  • [Whisper-Quiet Humidifiers for Bedroom]: Ultrasonic air humidifiers are incredibly silent, reduces noise to 26dB, quieter than a computer (Patent No: US16/439, 758 pending); perfect for your baby and a disturbance-free sleep at night, help you breathe easy throughout the night.
  • [Optional Night Light]: The whole house humidifiers for large rooms offer a soothing glow for easy operation and maximum relaxation in the dark; press the light button to turn on/off the night light. (Note: The night light is separately controlled. You can turn on / off the night light when the unit and mist is off).
  • [Easy to Clean & Refill]: 90mm Water Inlet, allows you to refill and clean your room 6l humidifier easily and conveniently (Not Top Filling). There won’t be any spill when filling, and you can fit your hand into the tank to clean the baby humidifier thoroughly. It comes with an adjunct brush, clean the base more convenient.
  • [User-Friendly & Safe to Use]: Visible Water Gauge with LED tank light(hold the light button for 1.5s to turn on/off the tank light), easy to check the water level at any time. The LED indicator will shine red and the humidifiers for home will stop misting to prevent the device from overheating.

The focal feature of this Homech ultrasonic humidifier is its extra-large 6-liter water tank. This is probably what you need if you want to keep your room essentially hydrated, especially if it comes in a considerable size. And as it reduces frequent refilling, it can diffuse continuous mist for up to 100 hours! But the machine automatically shuts off when the water tank is off the base or completely drained.

While you fill your room with sufficient humidity level, you can also revel in a peaceful sleep because this humidifier does its job quietly. You won’t have to worry about waking your baby up or waking yourself up in the middle of the night. It is safe to use and easy to clean as well. With its dial control knob, you can use this ultrasonic humidifier and adjust the settings with one quick shift!

Key Features

  • 6-liter water tank
  • Large tank that can keep the room essentially hydrated
  • Can deliver continuous mist for up to 100 hours
  • Automatically shuts off when the water runs out or the tank is off the base
  • Easy to control with a dial knob
  • Very quiet operation

TaoTronics Ultrasonic Humidifiers for Babies

Humidifiers for Bedroom, ZOESURE 2.5L Top Fill Cool Mist Essential Oil Diffuser, Smart Humidifier Work with Alexa Voice Control APP Quiet for Large Room, Plant, Baby
  • 👍Voice & APP Control & Essential Oil Diffuser 3 In 1 Hudimifier: Compatible with Alexa for voice remote control, you can adjust the mist levels, timer, and sleep mode of your smart humidifiers for bedroom with vaporizer, via your voice or phone no matter where you are. [Note: Only support 2.4Ghz wifi]. Perfect and comfortable cool air fresher for your bedroom and living room.
  • 👍28dB Whisper Quiet Operation: Our ultrasonic humidifiers for baby not only run as quietly as a whisper but feature sleep mode when water runs out. Add a few drops of essential oils to the aroma pad, moisturize and perfume your room with our kids humidifier for bedroom at night but do not interrupt your kids' sweet dreams.
  • 👍Easy Clean & Top Fill Humidifier: Equipped with 5.3 inches wide opening and a brush, you not only open the lid and pour water directly from the top easily without flipping anything over, but you also can stretch the hand into the cold mist humidifiers for baby for thorough and effortless cleaning without dead corners—no worry about water leakage on your valuable furniture.
  • 👍Wide Coverage & Long Durance: Our 2.5L(0.66 gal) home humidifiers for large room provides 40 hours of moisture and coverage of 376ft² for whole house. Endless cool mist comes from the plant humidifier indoor to moisten the cool air during the working day or throughout the night. Spare you the trouble of frequent water refilling.
  • 👍3-Level Mist & 360° Rotation Nozzle: Rotatable nozzle and 3 mist levels help you consistently balance and regulate the humidity and temperature in your home for relief from congestion, coughs, dry skin, and sinus issues. Our Customer Support Team is here to help anytime if you meet problems with your room humidifier for bedroom.

If you want to set up an ultrasonic humidifier in your nursery room but don’t want to wake your precious little one in its sleep, you can consider this machine from TaoTronics. It has the basics of an ultrasonic humidifier that emits mist and fills the air with sufficient moisture, keeping your baby’s room clean and healthy. Engineered with a 4-liter water tank, it can handle large rooms that range from 215 to 430 square feet.

Setting it up is hassle-free. It also keeps up with what an ultrasonic humidifier is known for: whisper-quiet operation. While it gives your little one restful sleep, you can also optimize the mist settings. This machine shuts off automatically when the water runs out. Moreover, it keeps the controls simple and easy with a dial knob.

Key Features

  • 4-liter water tank
  • Very easy to set up and disassemble
  • Has adjustable mist settings
  • Whisper quiet operation that provides a peaceful sleep
  • Easy to control with a dial knob
  • Can handle rooms up to 430 square feet

Miroco MI-AH001 Ultrasonic Cool Humidifier with 6L Tank

Humidifiers for Bedroom Large Room, 4L Cool Mist Humidifiers for Home, GANIZA 50H Air Vaporizer Humidifier, Ultrasonic Quiet Humidifiers for Kids, Baby, Plants, Filterless Humidifier Easy to Clean
  • 🏆【𝐋𝐚𝐫𝐠𝐞 𝐜𝐚𝐩𝐚𝐜𝐢𝐭𝐲,𝐋𝐨𝐧𝐠 𝐋𝐚𝐬𝐭𝐢𝐧𝐠】Our large cool mist humidifier has a 4L (1-gallon) water tank that can run for up to 50 hours without needing frequent refills. Perfect for large rooms of up to 430 ft². The 360° rotating nozzle allows you to direct the mist in any direction, providing optimal coverage for your space.
  • 🏆【𝐇𝐢𝐠𝐡 𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 𝐇𝐮𝐦𝐢𝐝𝐢𝐟𝐢𝐞𝐫】 Enjoy a customizable mist output of up to 300ml/h, perfect for achieving optimal humidity levels quickly. The simple rotating knob of this filter-free humidifier allows you to adjust the mist output to meet your individual needs.
  • 🏆【𝐐𝐮𝐢𝐞𝐭 𝐚𝐧𝐝 𝐂𝐚𝐥𝐦𝐢𝐧𝐠】The baby humidifier for bedroom has no humming or dripping, the noise level lower than 22dB, perfect for use in nurseries, bedrooms, offices, plant grow rooms. You can enjoy a peaceful atmosphere and breathe easier, no matter where you are.
  • 🏆【𝐍𝐨 𝐌𝐨𝐫𝐞 𝐖𝐞𝐭 𝐒𝐮𝐫𝐟𝐚𝐜𝐞𝐬】 This room humidifier with a mist height of up to 28 inches, say goodbye to damp surfaces with our advanced misting technology that prevents water leakage and keeps your surfaces dry.
  • 🏆【𝐇𝐚𝐬𝐬𝐥𝐞-𝐟𝐫𝐞𝐞 𝐔𝐬𝐞】Our bottom-fill humidifier features a visible water level line, the handle let you easy to clean and use with automatic water shortage protection for your safety. Our commitment to quality extends beyond the sale with reliable post-sales service. Enjoy the benefits of increased indoor humidity without any hassle or worry.

This filterless ultrasonic humidifier is designed to deliver an efficient cool mist that helps alleviate nasal congestion, hydrates dry skin and chapped lips, and promotes better and sound sleep. What’s great about this humidifier is its 6-liter water tank that can fill out a large room up to 430 square feet. And as it is designed without filters, you can save time and money on replacing and cleaning filters.

When it comes to its performance, Miroco makes it simple and easy with a handy dial knob. You can adjust the settings of the mist right on the dot. Equipped with a night light, you can choose whether to keep it on or off. If you wish to operate in the dark or just to set up a soft glow during nighttime, you can switch this night light on!

Key Features

  • 6-liter water tank
  • Delivers efficient cool mist with adjustable mist settings
  • Can handle large rooms up to 430 square feet
  • Easy to clean and refill
  • Has no filter; no filter replacements are needed
  • Comes with an optional night light
  • Operates very quietly

Everlasting Comfort Ultrasonic Cool Mist Humidifier (6L)

Everlasting Comfort Air Humidifiers for Bedroom - 50-Hour Continuous Use - Relieve Allergies, Sinuses, Congestion, Dry Skin - Ultrasonic Cool Mist Humidifiers for Home - Large Air Humidifier for Room
  • 50-HOURS OF CONTINUOUS MIST: Enjoy extended relief with our cool mist humidifier for bedroom, providing up to 50 hours of continuous moisture for a healthier living environment. Complete range, based on mist level, is 22 to 50 hours. NOTE: Packaging may vary
  • PERFECT FOR ANY ROOM UP TO 500 SQUARE FEET: Create an oasis of comfort in any space with our room humidifier, suitable for spaces up to 500 sq ft, ideal for large bedrooms, kid's rooms, nurseries, and living areas
  • ALLERGY, SINUS, CONGESTION, AND DRY SKIN RELIEF: Breathe easier with our bedroom humidifier, providing a soothing mist for allergy, sinus, congestion, and dry skin relief. The best humidifier for promoting better sleep and well being
  • FILTERLESS, EASY FILL, EASY CLEAN HUMIDIFIER: Say goodbye to hassle and goodbye to costly filters. Our bedroom humidifier for adults and children is user friendly. Designed for effortless filling and easy to clean, saving you on your expenses, time, and effort
  • ULTRASONIC, WHISPER QUIET MOTOR: Experience peaceful tranquility with our whisper quiet ultrasonic humidifiers for bedrooms, creating a serene atmosphere for restful sleep and relaxation. The best humidifiers for bedroom shouldn't disturb your sleep

Everlasting Comfort boasts its multifunctional ultrasonic humidifier that can keep the mist and moisture going for up to 50 hours! Equipped with a 6-liter water tank, you won’t have to change the water for cleaning and refilling more frequently. Its large capacity can accommodate large rooms up to 500 square feet; you can put this up in your bedroom, living room, or any large space that requires ample humidity levels.

Apart from its sleek and sophisticated design, this humidifier emits a cool mist that can relieve sinus issues and hydrate dry skin and chapped lips. It is crafted with a simple dial knob that makes it a lot easier to operate, allowing you to switch between the mist settings and the on/off switch. And when the water tank becomes empty, the humidifier automatically shuts off.

Key Features

  • 6-liter water tank
  • Can cover an area of up to 500 square feet
  • Adjustable mist settings
  • Diffuses cool mist to soothe sinus issues and hydrate dry skin and lips
  • Auto shuts off when the water tank is completely drained
  • Has a simple dial knob for easy controls


Investing in an ultrasonic humidifier is keeping up with a healthy environment. You and your family can ward off potential health hazards in your home and therefore, benefit from the positive effects ultrasonic humidifiers can offer.

These are indeed innovative machines worth every penny. But with overwhelming options of ultrasonic humidifiers and a variety of features to choose from, picking out the best one for your large room can be a bit difficult. Therefore, the in-depth reviews and buying guidelines mentioned above will help you find a worthwhile purchase!

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