Model 600 features:

• BUY WITH CONFIDENCE This humidifier was designed and manufactured in the U.S.A. by Aprilaire – the inventor of the whole home evaporative humidifier, and the leader in indoor air quality solutions
• FULL COVERAGE up to 4,000 square feet in tightly built homes with a capacity of 17 gallons per day
• AUTOMATIC HUMIDIFIER with dual sensors to monitor and respond to both outdoor temperature and indoor relative humidity to deliver optimum humidity 24/7 throughout the home – simply set it and forget it
• CONVENIENT DIGITAL CONTROL shows percent humidity, lights indicate humidifier is running, when to change the water panel, when service is needed, and Blower Activation switch sets humidifier to run continually, or only when the furnace runs
• HUMIDITY FOR HEALTH Aprilaire Humidifiers can help you maintain the optimal humidity in your home between 40% – 60% minimizing the formation of bacteria, dust mites, fungi, and viruses. This helps reduce the incidence of respiratory infections and symptoms related to allergies and asthma. In addition, you’ll feel more comfortable while also preserving items in your home susceptible to damage from changing humidity or dry conditions.