Ultrasonic humidifiers create vapor from two ceramic plates and sound vibration, creating tiny particles that are pushed into the air.

Safety 1st Ultrasonic 360 Humidifier, $30 This low-cost humidifier can run for up to 12 hours without refilling the tank. It humidifies up to 330 square feet, which is more than enough for a bedroom.

Ultrasonic humidifiers create vapor from two ceramic plates and sound vibration, creating tiny particles that are pushed into the air.

Ultrasonic humidifiers create vapor from two ceramic plates and sound vibration, creating tiny particles that are pushed into the air.

We recommend three ultrasonic humidifiers, including our top-pick Levoit LV600S Smart Hybrid Ultrasonic Humidifier, as well as two evaporative also-greats in our guide to the best humidifier.

For those of us whose skin in the winter gets as scaly as a lizard’s, home humidifiers might sound essential. But humidifiers are more complicated to use and care for than some other household ...

Ultrasonic humidifiers create vapor from two ceramic plates and sound vibration, creating tiny particles that are pushed into the air.

A new paper out of the University of Alberta shows using anything but distilled water in an ultrasonic humidifier may actually do more harm than good.