The AprilAire Model 400 Evaporative Humidifier operates in conjunction with the heating, ventilating, air conditioning equipment (HVAC) blower. When the AprilAire Humidifier Control calls for humidity and the blower motor is operating, water flows to the distribution tray located at the top of the humidifier. The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets, it flows by gravity over the Water Panel® evaporator, the heart of the humidifier. Dry, hot air is moved through the moisture-laden Water Panel® evaporator where natural evaporation takes place. The now-humidified air carrying moisture in vapor form (nature’s own way) is circulated throughout the home.
HUMIDITY FOR HEALTH
• AprilAire Humidifiers can help you maintain optimal humidity in your home which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses.
HUMIDITY FOR COMFORT
• Balance your humidity to preserve your home and protect its occupants from dry air issues like static shock and chapped skin.
BUY WITH CONFIDENCE
• This humidifier was designed and manufactured in the USA by AprilAire—the inventor of the whole-house evaporative humidifier, and the leader in Indoor Air Quality since 1954.
ONBOARD SENSOR
• Automatically turns on the HVAC fan to measure the relative humidity inside the ductwork and from all parts of the home. Turns on the humidifier whenever the measured humidity drops below the set point.
WHOLE-HOUSE HUMIDIFICATION
• For Homes with Ducted Heating and Cooling Systems.
FULL COVERAGE
• For tightly constructed homes up to 5,000 square feet, with a capacity of 17 gallons per day.
