Protect your home from dry, harmful air with the EE-5301 Cool Mist Humidifier by Crane. This humidifier features an ultrasonic, rapidly vibrating transducer that shakes so quickly, it breaks down water droplets into water vapor, which is then released into your air. This process produces a cool, soothing mist, avoiding the heat created by other humidifiers that turn water into vapor using boiling methods. Perfect for combating the effects of dry air like dry cough, sinus irritation and dry skin, this humidifier also reduces the symptoms of those suffering from asthma and allergies. The EE-5301 Cool Mist Humidifier expels 2.1 gallons of moisture per day and offers whisper quiet operation, an auto-shut off and a water empty indicator.