Aprilaire 400

The Aprilaire Model 400 Humidifier is a whole-home solution that helps you achieve total comfort through humidity control. The Model 400 features drain-free operation, eliminating standing water. This makes it the perfect choice for homes with septic systems, locations where a floor drain is not available or homeowners interested in water conservation. It is installed by a local HVAC professional.

Aprilaire® Bypass Humidifier, 24 VAC at 60 Hz, 0.5 A, 10 in W x 12-3/4 in H Plenum Opening, Automatic Digital Control, 17 gal/day Capacity, Up to 4000 sq-ft Coverage Area, 0.7 gal/hr Water Usage Rate, 6 in Bypass Diameter, 10-1/4 in L x 15-3/8 in W x 15-3/4 in H

• Uses 100% of water and evaporative technology that eliminates the need for a drain
• Minimal water usage
• No drain required
• No standing water
• Provides vital service, temperature and relative humidity indicators in manual mode as well
• Humidifies tightly constructed homes up to 4000 sq-ft in size
• Has an evaporation capacity of 0.7 gal/hr
• Installed in central heating and cooling system ductwork
• Comes equipped with drain to flush minerals from the unit
• 1/2 in plastic hose fitting drain connection
• Round bypass duct

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Aprilaire_350_Catalog.pdf
• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/Aprilaire_350_Manual.pdf