Make breathing a little more comfortable with the Honeywell Warm Mist Humidifier. This handy machine provides additional moisture and a less harsh environment. . The fan-free operation of the Honeywell HWM845WWM is ideal for bedroom use. The wide tank opening makes it easy to fill and clean for simple maintenance and use. Designed for medium-sized rooms, this item has a 1-gallon capacity tank and can run up to 24 hours on the low setting to ensure consistent quality of air. This Honeywell Warm Mist Humidifier comes with a 3-year limited warranty for added peace of mind for the user.