Breathe easier and find reprieve from the drying effects of the heater or air-conditioning with a Westinghouse Cool Mist Ultrasonic Tower Humidifier. This cool air humidifier features a 6L tank capacity, allowing it to run for an amazing 27 to 81 hours before needing a refill. A built-in safety protection system warns of low water via a visible light indicator. Use it in bedrooms or a nursery -- it's safe as a baby humidifier. You can also use our cool mist humidifiers with essential oils and enjoy the benefits of aromatherapy. The tower design and top-fill design also make it the perfect cold mist humidifier for large rooms. Use this humidifier and air purifier combo to alleviate dry sinuses, prevent dry skin, and decrease static electricity. Enjoy its whisper-quiet operation and precise, adjustable mist volume.