Aprilaire Automatic Whole-House Drainless Bypass Humidifier with Digital Control Model 400
This affordable whole house bypass humidifier can be set up to be fully automatic, with the unit using an included outdoor sensor and digital controller to automatically activate the blower when sensing humidity is falling below the desired level. The Aprilaire 400 is simple to install with its built-in bypass damper but it’s not recommended for a novice to do on their own.
Evaporative technology makes the Model 400 more efficient, with gravity pulling water down through the unit, and wicking action drawing it back up to provide humidity to the system. This also eliminates the need for a floor drain. This humidifier is rated to provide .70 gallons of humidity per hour to up to a 4,000 square foot house. This efficient whole house furnace humidifier is a great choice for those who are conserving water, while being affordable and easy to install.
- Aprilaire Automatic Whole-House Drainless Bypass Humidifier with Digital Control Model 400
- Aprilaire Automatic Whole-House Powered Humidifier with Digital Control Model 700
- Aprilaire 500 Humidifier, 24V Whole House Humidifier
- Honeywell HE260A Higher Capacity Whole House Bypass Humidifier
- Aprilaire Automatic Whole-House Bypass Humidifier with Digital Control Model 600