The Aprilaire 500A Humidifier is one of eight updated humidifier models from Aprilaire. The Aprilaire 500 Humidifier is the best bypass humidifier for small to mid-sized homes, and the model 500A features an updated digital, automatic humidity control.

The Aprilaire 500A Humidifier includes a built-in bypass damper and a drain to flush minerals from the unit. In addition, the Aprilaire 500A humidifier can humidify a tightly-constructed home of up to 3,000 square feet. The bypass damper is conveniently labeled for winter and summer settings.

The Aprilaire 500A 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 500A Humidifier Installation Instructions

Click Here for the Aprilaire Humidifier Owners Manual

Aprilaire Humidification Facts For Total Indoor Air Comfort

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