Aprilaire: The Model 400
The Aprilaire Model 400 Whole-House Humidifier features a built-in bypass damper and utilizes evaporative technology to minimize water use. Gravity pulls water down, while the wicking action of the Water Panel ® draws it back to the top, using 100% of the water delivered to the unit.
BUILT GREEN® Checklist
This product may help earn points under the following checklist item:
4.6 Install permanent (de)humudification control (ERVs are acceptable) (1 point).
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