The brand claims this cool mist humidifier can last up to 60 hours on one tank set to the lowest mist levels, and it's quiet enough to run throughout the night. (It also has an optional built-in nightlight.) This machine can connect to an app or work with Amazon Alexa and Google Assistant for remote and hands-free controls, and offers scheduling options as well as auto mode to prompt it to adjust mist levels according to your desired humidity levels.

With its compact design and shockingly quiet operation, you might forget you are using a humidifier. That's why the auto shut-off feature comes in handy when the water level is low or the tank is misaligned — in case you actually do forget.

The larger 1.5 gallon tank on the Levoit means you can service a larger space (up to 753 square feet) or that it won’t have to be refilled quite as often (up to 60 hours on the lowest mist setting!). It operates with both ultrasonic warm and cool mist so you can get the benefits of both. The handy humidity readout means you can easily know the status of the room without an additional meter.

If you have asthma, then look no further than this Dyson humidifier that has been certified asthma- and allergy-friendly by the Asthma and Allergy Foundation of America (AAFA). With its ultraviolet light technology, this humidifier claims to kill 99.97% bacteria before it disperses cool mist into the dry air of your room.

Designed to clean spaces up to 326 sq. ft. in 12.5 minutes or up to 788 sq. ft in 30 minutes.

Dynamic combination of a washable pre-filter, active carbon filter, and True HEPA Filter effectively reduces 99.999% of 0.01-micron particles in the air, including pollen, pollutants, and other allergens. It also reduces 99% of volatile organic compounds and odor..

A top-filling design makes the air humidifier is easily refilled and cleaned. Simply open the top cover to add purified water directly to the water tank through the wide opening top. The air vaporizer for bedroom lasts up to 45 hours with a 4.5L water tank in low mode and covered rooms as large as 377ft². Ideal for large rooms, bedrooms, offices and dorms.