Aprilaire 400

Aprilaire® 400 Bypass Humidifier, 24 VAC at 60 Hz, 0.5 A, Automatic Digital Control, 17 gal/day Capacity. Available for AprilAireHumidifier promotion. See full detailsbelow.

  • Manufacturers: AprilAire
  • Brand Name: Aprilaire
  • Item #: 22576
  • Rebate Amount:
  • MPN: 400
  • Qty. Interval: 1
  • Availability: Login for Availability

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Part of AprilAire Buy 12 Evaporative Humidifiers, and Get One FREE promotion. Offer valid on purchases made from September 1st through October 31st, 2023. Click here for submission form.


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

Voltage Rating      :      24 VAC at 60 Hz
Amperage Rating      :      0.5 A
Plenum Opening      :      10 in W x 12-3/4 in H
Control Type      :      Automatic Digital
Capacity      :      17 gal/day
Coverage Area      :      Up to 4000 sq-ft
Water Usage Rate      :      0.7 gal/hr
Bypass Diameter      :      6 in
Dimensions      :      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