Protect your home from dry air with the PureGuardian Easy-Clean Humidifier! With a 360-degree nozzle, this cool mist humidifier guards against problems caused by dry air in the home, and helps alleviate cold, flu, and allergy symptoms, as well as dry skin. It features an easy to fill 1 gallon tank ideal for use in medium-large rooms (up to 410 sq. ft.) and has a run time of up to 40 hours*. This unit features a detachable water tank that is top-shelf dishwasher safe for the ease of cleaning. Imbedded in the water tank, Silver Clean™ Protection works to fight the growth of mold and mildew on the surface of the water. This table-top humidifier also features a low water indicator. Note: Run time is based off of running the unit on low speed, also depends on atmospheric conditions.