Aprilaire Model 400M Whole-house Bypass Humidifier with Manual Control


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as of 11/27/2021 (Details)

The Aprilaire 400M Humidifier features a unique water-conserving design that does not require a drain line. The Aprilaire 400M bypass humidifier can humidify a tightly-constructed home of up to 4,000 square feet. Type: Drainless Bypass Evaporative Capacity: 17 gal/day Humidistat: Manual Furnished Materials: • Built-in bypass damper • 24 VAC Transformer • #4655 Manual Control (Humidistat) • Saddle valve • One #45 Water Panel • Humidifier installation template • Installation instructions Not Furnished Materials: • Mounting screws (sheet metal screws) • Water supply line (1/4" copper) • Drain line (1/2" I.D. hose) • Bypass duct work • Model 50 Current Sensing Relay (if required) Features: • Eliminates standing water, making it the perfect choice for homes with septic systems, locations where a floor drain is not available or families interested in water conservation • Features Manual Control • Has an evaporation capacity of 0.70 gallons per hour • Humidifies tightly-constructed homes up to a 4,000 square foot in size • Needs no drain panel uses 100 percent of humidifier water Specifications: • Sq. Ft. Area (air changes/hr.): 1,000 loose house (2) / 2,000 avg. house (1) / 4,000 tight house (1/2) • Unit Size (inches): 15-3/8W x 15-3/4H x 10-1/4D 6" dia. round opening • Plenum Opening (inches): 10W x 12-3/4H • Water Evap Rate: 0.70 gph • Water Feed Rate: N/A • Electrical Data: 24V-60Hz 0.5 AMP 5 year Manufacturer's Warranty from date of installation except for the Water Panel.

Technical Details

  • Manual Drainless Bypass Humidifier
  • Humidifies a tightly-constructed home of up to 4,000 square feet
  • The Aprilaire 400M Humidifier includes a built-in bypass damper that is conveniently labeled for winter and summer settings
  • 5 Year Manufacturer Warranty
  • Genuine Aprilaire Humidifier

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