This cold mist humidifier will allow you to breathe unparalleled air quality while ensuring quiet operation. It is ideal for medium sized rooms (250 to 400 sq.ft.). Its QuietCare (TM) system makes the engine 30% quieter and maintains a high level of performance. This humidifier has 3 moisture output settings and an integrated break resistant water tank. The wide tank opening and the dishwasher-safe water bowl are easy to fill and clean. Operates up to 24 hours on a single fill. 3-year limited warranty.