The Aprilaire 400A Humidifier is one of eight Brand New humidifier models from Aprilaire. The Aprilaire 400 Humidifier is unique because it features a water-conserving design that does not require a drain line! Plus, the model 400A features an updated digital, automatic humidity control.

The Aprilaire 400A Humidifier includes a built-in bypass damper that is conveniently labeled for winter and summer settings. In addition, the Aprilaire 400 humidifier can humidify a tightly-constructed home of up to 4,000 square feet.

The Aprilaire 400A comes complete with the new Aprilaire digital humidity control, two Aprilaire water panels, outdoor temperature sensor, saddle valve, 24V transformer, installation instructions as well as a fantastic informational DVD from Aprilaire! In addition, Aprilaire includes a certificate for a free stand-alone Digital Weather Station to monitor temperature and humidity. Installation and Operating Manuals:
Click Here for Detailed Aprilaire 400A Humidifier Installation Instructions

Click Here for the Aprilaire Humidifier Owners Manual

Aprilaire Humidification Facts For Total Indoor Air Comfort

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