The Best Ultrasonic Humidifiers 2025

1. HoMedics - TotalComfort Deluxe Dual-Tank Ultrasonic Humidifier - Black

0.5 amps; 0.2-gal. tank capacity; Silver Clean technology; ultrasonic technology; low-water indicator

The HoMedics TotalComfort Deluxe Ultrasonic Humidifier produces a visible warm or cool mist for up to 120hrs of runtime. With 5 mist settings, the warm mist kills up to 99.9% of bacteria covering up to 533ft2. Featuring a programmable humidistat, nightlight, automatic shut-off, demineralization tray and essential oil pads, the TotalClean Deluxe is perfect for large bedrooms and family spaces.

2. Homedics - Top Fill Cool Mist Ultrasonic Humidifier - Large

Humidifies rooms up to 250 sq. ft.; 0.9-gal. reservoir capacity; 2.3-gal. output per day; 360° nozzle; demineralization cartridge

The HoMedics Top Fill Cool Mist Ultrasonic Humidifier. Breathe easier, sleep better. Ultrasonic, high-frequency technology converts water into a cool, fine mist that effectively adds moisture to the air. The easy-to-fill, easy-to-clean, top-fill tank holds 1.47 gallons of water, offers a runtime of up to 70 hours, offers whisper-quiet technology, and is ideal for family rooms and bedrooms up to 426 sq. ft.*. With all its bells and whistles, the Total Comfort Deluxe is a great addition to any home.

3. Sharper Image - MIST 6 Ultrasonic Humidifier with Remote - White

Humidifies rooms up to 250 sq. ft.; 0.9-gal. reservoir capacity; 2.3-gal. output per day; 360° nozzle; demineralization cartridge

With the MIST 6 ultrasonic humidifier Sharper Image combines style, comfort and convenience. Wood grain accents and the chic round shape set it apart, while an integrated carry handle, touch controls and a remote make it easy to use. The MIST 6 steps up with a larger 1.0 gallon capacity for fewer refills, and outputs 1.8 gallon of humidity daily through 2 cool mist settings. Add to that an auto-shutoff feature to conserve energy when the water tank empties and a 2-year warranty, and you’re able to put your mind at ease.

4. Sharper Image - AROMA 2 Ultrasonic Humidifier with Aromatherapy - White

0.5 amps; 0.2-gal. tank capacity; Silver Clean technology; ultrasonic technology; low-water indicator

The AROMA 2 ultrasonic humidifier by Sharper Image both humidifies the air and uses aromatherapy to promote stress relief and relaxation when used with essential oils. The soothing ambiance light comes in 7 color options to fit your mood, and the touch- sensitive buttons make it simple to use. With a 0.23 gallon capacity and two cool mist settings the AROMA 2 can deliver 0.76 gallon of humidity daily. For an added convenience and peace of mind it comes with a 2, 4 or 6 hour timer and a 1-year warranty.

5. HoMedics - TotalComfort Deluxe 1.38 Gallon Top-Fill Ultrasonic Humidifier - White

0.5 amps; 0.2-gal. tank capacity; Silver Clean technology; ultrasonic technology; low-water indicator

Experience the benefits of warm or cool microfine mist with the HoMedics TotalComfort Deluxe Ultrasonic Humidifier. It has a top-fill 1.38-gallon water tank that provides up to 85 hours of continuous runtime, an auto-off timer for up to 8 hours, and Clean Tank Technology to help protect the tank from mold and mildew. The user-friendly LED digital display offers a programmable humidistat, night-light settings, and 5 mist levels, including warm mist that kills up to 99.9% of bacteria. Enhance your space further with the included essential oil tray accompanied by 3 individual pads and a demineralization cartridge.

6. Homedics - TotalComfort Portable Ultrasonic Humidifier - White

0.5 amps; 0.2-gal. tank capacity; Silver Clean technology; ultrasonic technology; low-water indicator

Breathe in total comfort on the go. The Homedics TotalComfort Portable Ultrasonic Humidifier disperses visible cool mist with 2 adjustable mist settings. Small enough to fit in your car cup holder, it’s perfect for personal space. The easy-to-fill 8.5-oz. tank features up to 10 hours of runtime when plugged in and up to 2.5 hours when using the rechargeable battery with auto-shutoff protection after 12 hours. Clean Tank Technology helps protect the tank from mold and mildew. Plus, a built-in color-changing accent light with on/off allows you to customize your ambience.

7. HoMedics - Ultrasonic Cool Mist Humidifier - Gray/white

Variable mist settings; mobile; auto shut-off (when empty)

Ease problems caused by dry air anywhere with this HoMedics Personal Travel ultrasonic humidifier. It uses a standard 20-oz. water bottle to mist any room for up to 9 hours, and this ultra-quiet unit has adjustable mist control. This HoMedics Personal Travel ultrasonic humidifier comes with a convenient travel bag.

8. HoMedics - TotalComfort .85 gallon Ultrasonic Humidifier - White

In-home virtual reality setupDownload and install softwareEnsure safe operationSetup and configurationInstructional overview

Breathe in total comfort. The HoMedics TotalComfort Ultrasonic Humidifier disperses visible cool mist. With 3 mist settings, it’s great for medium sized rooms up to 547 sq. ft. The 0.85-gallon tank features up to 60 hours of runtime with auto off protection when the water runs out. Keep your humidifier working like new with a clean reminder that lets you know when it’s time to clean the transducer, Clean Tank Technology helps protect the tank from mold and mildew, and the included demineralization cartridge helps reduce white dust buildup from hard water. Plus, a built-in night-light and essential oil tray compatible with any HoMedics essential oil will enhance your ambience.

9. Sharper Image - MIST 4 Ultrasonic Humidifier - White

1.5-gal. tank capacity; runs for up to 100 hours; SilverClean technology; ultrasonic technology

The Sharper Image MIST 4 ultrasonic humidifier is simple to use with easy touch controls that feature two cool mist settingsand a 360° rotatable mist nozzle. The MIST 4 has a 0.66 gallon capacity with 1.4 gallon daily output, and it includes an auto-shutoff feature to conserve energy when the water tank empties. When it is empty, refills are a breeze. Simply remove the top and fill it right up. The MIST 4 is a sleek addition to any space with a 1-year warranty.

10. Homedics - Top Fill Cool Mist Ultrasonic Humidifier - Medium

Humidifies rooms up to 250 sq. ft.; 0.9-gal. reservoir capacity; 2.3-gal. output per day; 360° nozzle; demineralization cartridge

Visibly cool mist and style. The Homedics Ultrasonic Humidifier disperses a cool mist you can see with 360-degree coverage in medium-large rooms up to 400 sq. ft. Easy on the eyes and air. The top-fill 0.97-gallon tank features up to 45 hours of runtime with automatic shutoff when out of water, plus adjustable mist settings. Clean Tank Technology helps protect the tank from mold and mildew while the included essential oil tray and built-in night-light offer relaxing aromatherapy.