HoMedics TotalComfort Deluxe Humidifier 3,8 L - CaseHumidifier HoMedics TotalComfort Deluxe 1 gal. The TotalComfort Deluxe Ultrasonic Humidifier uses ultrasonic technology with warm or cool mist options and kills up to 99. 9% of bacteria with warm mist. The 1 gallon tank is easy to remove and fill and runs up to 120 hours per filling. Auto shutoff protection when tank is empty and a built in timer for up to 12 hours Includes an essential oil tray with three pads and two demineralization cartridges