This water-saving bypass humidifier is a whole-home solution that helps you achieve total comfort though humidity control. Featuring a drain-free operation that eliminates standing water, the model 400MK is a perfect choice for homes with septic systems, locations where a floor drain is not available, and locations where water conservation is a concern.

Features

• Minimal water usage
• No drain required
• No standing water
• Provides vital service, temperature and relative indicators
• Humidifies tightly constructed homes up to 2,500 square foot in size
• Has an evaporation capacity of 17 gallons per day

Specifications

• Manufacturer: Research Products Corp.
• Brand Name:   Aprilaire 
• Model:   400MK  (replaces the Aprilaire 445)
• Category: Water / Large ByPass / Flow Through / Drainless
• Rated Capacity:  17 gallons / day
• Supply Voltage Required: 24VAC
• Manufacturers’ Order Number:  400MK
• Included Humidifier Control Type: Mechanical
• Plenum Opening Required: W= 10″  H= 12.75″
• Water Efficiency Level: 100%

Downloads:

Spec Sheet