The Envion Humidiheat combination heats and humidifies a room at the same time. It creates a comfortable atmosphere in the room and helps eliminate dry skin, sore throats and flu symptoms caused by dry air. This heater/humidifier combo has a ceramic heating element that delivers 1500 BTU of heat. Its fan evenly distributes the heat and moisture throughout the room. With 3 settingslow, medium and highyou can customize the flow to feel your best. Its ideal for rooms 300 to 500 square feet. Overheat protection and cool-touch exterior make this ceramic heater/humidifier a safe choice for homes and small offices. It uses anti-microbial technology to prevent the growth of bacteria and other germs in the water tank. Its portable design allows you to move it from room-to-room with ease. This UL-listed device is powered by electricity. You just need to rinse it for easy maintenance.