PureGuardian Ultrasonic Warm & Cool Mist Humidifier and Homedics TotalComfort Deluxe Ultrasonic Humidifier The chill of winter air comes with another unpleasant feature: It has a drying effect.

The ultrasonic humidifier has user-friendly controls and is easy to fill thanks to the top-fill opening. As both a cool and warm mist humidifier, this one stands out among its competitors.