Unlike regular ultrasonic humidifiers, this heating humidifier directly heats up water and supplies the vapor to indoor spaces. The heated vapor supplies moisture to the dry air in the winter, keeping indoor air warm. Since the water is heated at 100 °C, it offers completely sterilized moisture for infants and hospital rooms. For product safety, it has a cylindrical shape with a wider bottom. An easily recognizable image at the product’s bottom visually represents the water sterilization function. To keep the inside clean and facilitate management of sanitation, this product has a simple internal structure.