10 Best Cool Mist Humidifiers Ultrasonic

#1 Best Pick

MedeScan RainbowMist Cool & Warm Mist Ultrasonic Humidifier – 5L Aroma Diffuser with Essential Oil Tray, 7 LED Lights, Quiet, Easy Clean for Dry Air & Comfort - No Filter Required

Brand: MEDESCAN

Cool & Warm Mist Options – Choose warm mist for winter or cool mist for summer. Enjoy year-round humidity control to relieve dry skin, congestion, and improve sleep quality.
Large 5L Tank Capacity – Humidifies your space for up to 20 hours without refilling. Ideal for bedrooms, living rooms, nurseries, and offices.
Aroma Diffuser with Oils – Add your favourite essential oils for a relaxing, fragrant mist. Turn your space into a spa-like sanctuary at home or work.
7 Colour LED Light Settings – Includes soothing mood lights to suit your room’s ambiance or use as a calming nightlight for children or adults.
Quiet, Easy to Use & Clean – Designed for convenience with simple controls and easy cleaning. Ultra-quiet operation makes it perfect for night use.

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#2 Best Value

Ultrasonic Cool Mist Humidifier & Essential Oil Diffuser, Air Humidifier with Auto Shut-Off, Ultra-Fine Mist and LED Night Light for Bedroom, Plants, Living Room.

Brand: Ellgren

【Ultrasonic Humidifier】This humidifier utilises ultrasonic vibrations to atomise water into a fine, cool mist for optimal humidification. While bringing faster dry air relief to help you breathe easy and healthy. Enjoy quiet sleep without congestion, coughing, or dry mouth.
【Unique Silent Spray, Undisturbed Sleep】The humidifier applies the display-off sleep mode and the exclusive Silent Spray tech to ensure noise less than 23dB. Those most sensitive babies can also sleep deep and soundly all night.
【Automatic Shut-off】No need to babysit this Humidifier. Features an automatic shut-off function when the water level is low, ensuring safe and efficient operation. the Auto shut-off tech banishes all dry running or fire risks. Therefore, even for babies, it's perfect!
【Ultrafine Mist Diffuser - Equipped with LED Night Light】Thanks to its high-frequency atomization process, this humidifier for large room releases 5μm Ultrafine mist and lighter mist particles, allowing humidity to spread evenly across the room without wetting surfaces. Equipped with a soft LED night light, providing a gentle glow for a relaxing atmosphere.
【3-in-1 Humidifier】Cool mist humidifiers for bedroom are perfect companions for a healthier life, from helping you breathe easier, to making your own aromatherapy sessions, to changing the mood of your room with its ambient light (essential oils not included).

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#3 Budget Pick

MEGAWISE Cool Mist Humidifiers for Babies, Bedroom, Nursery, Home and Office | Super Quiet Ultrasonic Vaporizer, Large Top-Refill 3.5L, Essential Oil Diffuser, Auto Off, Easy Clean

Brand: MEGAWISE

Large 3.5L Water Tank - Enjoy the convenience of a spacious water tank, allowing for extended use without the need for frequent refills. Experience restful nights and swift relief from congestion and dry throat with this charming upgrade.
Top-Fill & No-Leak Design – Easily add water with the large top-fill opening, preventing spills. The leak-proof structure ensures secure use, while maintaining water levels between the min and max marks optimizes performance. Clean the tank every two weeks for fresh mist.
Soothing 7-Color Light & 2-in-1 Diffuser – Transform your space with a relaxing 7-color night light that sets the perfect mood. Effortlessly switch between cycling colors or a steady hue with a simple touch. Add your favorite essential oils for a fragrant home spa experience, while the smart sensor automatically shuts off when the water runs low, keeping the vaporizer safe from dry burn.
Adjustable Mist & Whisper-Quiet Operation – Control the mist output with an easy-to-use knob for your preferred humidity level, while the 360° nozzle lets you direct the mist wherever it's needed. Experience peaceful rest with noise levels as low as 24dB, ideal for bedrooms and nurseries. Turn off the light to create a calm, light-free environment for a restful night's sleep.
Reliable Customer Support – Access 24/7 live chat and call support from MEGAWISE for any questions or concerns. Enjoy peace of mind knowing we’re here to assist you every step of the way.

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#4 Top Choice

ASAKUKI Humidifier 3L Air Humidifier for Bedroom, Top Fill Cool Mist Humidifiers for Baby Plants, Quiet Oil Diffuser, Night Light for Large Room, Auto Shut Off, 360°Nozzle, BPA Safe, Easy Clean, 30H

Brand: ASAKUKI

FAST HUMIDIFICATION & ELIMINATE DRYNESS: This 3L humidifier features a 360° rotatable mist outlet & 30°tilted design, which allows you to easily turn mist to your desired direction, to enjoy concentrated misting and fast humidification, to create a healthy life environment. It sprays continuous mist for up to 30 hours at the lowest-mist setting, taking care of your comfortable and peaceful sleep all night.
STRONGER SCENT EXPERIENCE: Our humidifier comes with a separate aroma box that offers 2 ways of aroma diffusion: adding drops of your favorite essential oils to the aroma pad, or using ASAKUKI lavender scented pad for a stronger smell. Add moistures to your room air and let yourself immerse in pleasant scent. In addtinon, the detachable aroma box makes cleaning a breeze.
QUIET SLEEP & NIGHT LIGHT: Working sound ≤23dB, this humidifier ensures quiet and complete sleep for the whole family. The mute rotary knob prevents disturbing when adjusting mists. Besides, the low brightness and soft glow from the independently controllable night light, make it an ideal choice for nurseries and children's rooms.
EASY TO USE: With a user-friendly rotary knob, it achieves direct and quick mist mode selection and it's suitable for people at all ages. The large opening(diameter of 17.6 cm/6.9 inches) facilitates easy cleaning and water refilling. Save time and enjoy convenience.
RELIABLE BRAND: When water runs out, the AUTO SHUT-OFF will activate to ensure user safety. Made from BPA-free materials, it is especially safe when used in bedrooms, nurseries, and living rooms. We provide a 2-year warranty and lifetime after-sales service, just to bring you a pleasant shopping experience. Feel free to contact us anytime if you need help - your satisfaction is our top priority!

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#5 Popular Choice

Air Humidifier, Cool Mist Humidifier with 3L Water Tank, Humidifier for Bedroom & Single Room, Essential Oil Aroma Diffuser, Ultrasonic Cool Mist, Lower Noise, Adjustable 360° Knob, Auto Shut-Off.

Brand: Sccaty

3L Visible Water Tank: The air humidifier supports at least 3 Liters of its capacity for up to 24 hours operating time. The humidifier's mist output is 100ml/h-280ml/h in rooms up to 10-30 m²/ 107-322 ft² like for bedroom, whole house room, living room, office etc.
Ultrasonic Mist Humidify: The air humidifier provides the rotating button to adjust the humidify. There is three conditions for diverse humidify situation. Low mode for night or high humidity, medium mode for neutral condition, high mode for low humidity situation. The room humidifier is able to make ultrasonic cool mist for any single and whole rooms.
Visible Water Tank & Easy To Clean: The cool mist humidifier affords the visible water tank which no leaking water issue to the base machine. Adding water above can easily use the humidifier and clean it well. There are no rare problem which cannot output mist while the water tank filled.
Auto-Shut Off & Less Work Sound: The air humidifier has auto shut off mode which the item will be automatically off while there is no water at the tank. The mode can help the safety of use. In addition, the humidifier can be the soothing mist quietly which is less than 35dB sound. The item can provide the advanced humidify experience.
Essential Oil Diffuser & Favorable Gifts: The aroma diffuser port is in the bottom side of the humidifier. Adding the essential oil directly and operating the air humidifier with aroma mist. It is favorable and suitable gifts for family members, friends or colleagues.

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#6 Top Pick

Vicks Ultrasonic Cool Mist Humidifier 4.5L for Medium to Large Room, Office, Dining or Living area, Rotating Mist Nozzle

Brand: Vicks

4.5-litre capacity - An easy-to-fill and clean 4.5-litre tank for up to 40 Hour Runtime
Dual VapoPad Technology - To enhance your relief, simply add Vicks VapoPads
Soothe Cough & Congestion - Visible moisture helps provide temporary relief from cough and congestion
Cool Mist - Ultrasonic system helps naturally restore moisture to dry air with cool mist
Filter Free Design - Easy to maintain, requiring no filter

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#7 Top Pick

ASAKUKI Air Humidifier for Bedroom, 4L Top Fill Cool Mist Humidifiers for Baby, Plant, Quiet Ultrasonic Oil Diffuser for Large Room, 360°Nozzle, Auto-Shut Off, Night Light, BPA Free

Brand: ASAKUKI

RAPID RELIEF FOR DRYNESS: This powerful cool mist humidifier sprays up to 330 ml/h, reaching heights of 24 inches to quickly boost moisture—easing congestion, coughs, and dry throat fast.
EXTENDED 40-HOUR OPERATION: The large 4L water tank ensures long-lasting humidification for up to 40 hours, ideal for living rooms, offices, and plant areas with minimal refills.
EFFORTLESS REFILLING & CLEANING: Featuring a convenient top-fill design and a detachable tank with a wide opening for easy, spill-free maintenance.
QUIET & RESTFUL NIGHTS: Engineered with low-noise technology and an optional nightlight that can be turned off, ensuring undisturbed sleep for the whole family.
CUSTOMIZABLE MIST & AROMATHERAPY: Adjust mist intensity with a simple knob and direct the 360° nozzle as needed. Use the dedicated oil tray with essential oils for soothing scented air.

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#8 Top Pick

MedeScan Rainbow Mist Top-Fill Humidifier - Ultrasonic Cool Mist, Aromatherapy Diffuser, 7-Colour LED Night Light, Quiet Operation, Timer Settings - No Filter Required

Brand: MEDESCAN

Ultrasonic Mist Technology – Produces a fine cool mist to introduce moisture into indoor spaces, suitable for everyday use at home or in shared environments.
Aromatherapy Function – Built-in tray supports the use of essential oils for those who prefer a scented atmosphere.
Top-Fill Design – Wide opening allows for easy filling and cleaning, with no need to disassemble the unit.
Soft LED Night Light – Seven-colour ambient light can be used to complement any room setting, with adjustable brightness levels.
Adjustable Timer Settings – Choose from 3, 6, or 9-hour run times with automatic shut-off for added convenience.

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#9 Top Pick

MegaWise Ultrasonic Cool Mist Humidifier SK7620-1.5L Capacity, Whisper-Quiet Operation, Adjustable Mist Output, Auto Shut-Off - Ideal for Home, Office, Baby Room, and Bedroom

Brand: MEGAWISE

We Care About You: The mist humidifier will be automatically shuts off if waterless, and it is BPA free, FCC Ctificated and RoHS, creating a safe and healthy environment for your families.
Moisturize All Day: 0.5gal water capacity suppots the running time up to 10 hours at low level, 8 hours at medium level and 6 hours at high level, it can help you to fight with dry skin, wrinkles, insomnia, and sore throat, creating a whole moisturized day.
Whisper Quiet for Love: Ultra quiet 25dB humidifier for bedroom, home, office even nursery, noise lower than a computer, you will have a better sleeping,working,study etc.
Relaxed At Home: Enjoy a relieve whole day by adding different flavors essential oils into the water tank to create a soothing atmosphere
Advanced Support: MegaWise offer 2-year warranty, 24/7 live chat support, you can contact us at any time and provide timely help for you.

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#10 Top Pick

Clarston Humidifier 2L Humidifiers for Bedroom, Top Fill with 360° Nozzle, 2 Mist levels, Night Light, 24dB Quiet Cool Mist Air Humidifier for Baby Nursery & Plants, No BPA, Auto Shut Off, Easy Clean

Brand: CLARSTON

【Long-Lasting Performance】With a 2L water tank and a low-speed run time of up to 20 hours, this cool mist humidifier ensures continuous operation throughout the night, combating dry air and alleviating dryness continuously. (Please note: do not place the humidifier directly on the carpet to avoid blocking the air inlet and causing a "pool"）
【Customizable Design】Feature a 360° nozzle for adjustable mist direction and high, and low mist levels tailored to your needs; you can use essential oil to enjoy relaxing aromatherapy with a soothing fragrance using the small humidifiers for bedroom
【Whisper-Quiet & Light-Off】Operating at ultra-low 24 db, and featuring a light-off design, the humidifiers for babies create a peaceful and silent atmosphere at night, allowing all-night undisturbed, restful sleep
【Suitable for Babies】Crafted without BPA, the baby humidifiers for nurseries feature feature an automatic shut-off function that allows worry-less humidification for the little ones and plants; ideal cool mist humidifiers for homes and offices
【Easy Top Filling & Cleaning】The whole house humidifier features a removable water tank cover, allowing convenient one-step refilling without detaching the water tank; easy to clean the inside of the water tank through the top opening

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10 Best Cool Mist Humidifiers Ultrasonic

MedeScan RainbowMist Cool & Warm Mist Ultrasonic Humidifier – 5L Aroma Diffuser with Essential Oil Tray, 7 LED Lights, Quiet, Easy Clean for Dry Air & Comfort - No Filter Required

Ultrasonic Cool Mist Humidifier & Essential Oil Diffuser, Air Humidifier with Auto Shut-Off, Ultra-Fine Mist and LED Night Light for Bedroom, Plants, Living Room.

MEGAWISE Cool Mist Humidifiers for Babies, Bedroom, Nursery, Home and Office | Super Quiet Ultrasonic Vaporizer, Large Top-Refill 3.5L, Essential Oil Diffuser, Auto Off, Easy Clean

ASAKUKI Humidifier 3L Air Humidifier for Bedroom, Top Fill Cool Mist Humidifiers for Baby Plants, Quiet Oil Diffuser, Night Light for Large Room, Auto Shut Off, 360°Nozzle, BPA Safe, Easy Clean, 30H

Air Humidifier, Cool Mist Humidifier with 3L Water Tank, Humidifier for Bedroom & Single Room, Essential Oil Aroma Diffuser, Ultrasonic Cool Mist, Lower Noise, Adjustable 360° Knob, Auto Shut-Off.

Vicks Ultrasonic Cool Mist Humidifier 4.5L for Medium to Large Room, Office, Dining or Living area, Rotating Mist Nozzle

ASAKUKI Air Humidifier for Bedroom, 4L Top Fill Cool Mist Humidifiers for Baby, Plant, Quiet Ultrasonic Oil Diffuser for Large Room, 360°Nozzle, Auto-Shut Off, Night Light, BPA Free

MedeScan Rainbow Mist Top-Fill Humidifier - Ultrasonic Cool Mist, Aromatherapy Diffuser, 7-Colour LED Night Light, Quiet Operation, Timer Settings - No Filter Required

MegaWise Ultrasonic Cool Mist Humidifier SK7620-1.5L Capacity, Whisper-Quiet Operation, Adjustable Mist Output, Auto Shut-Off - Ideal for Home, Office, Baby Room, and Bedroom

Clarston Humidifier 2L Humidifiers for Bedroom, Top Fill with 360° Nozzle, 2 Mist levels, Night Light, 24dB Quiet Cool Mist Air Humidifier for Baby Nursery & Plants, No BPA, Auto Shut Off, Easy Clean

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