DRH: Direct Room Humidifier

Stand-alone Ultrasonic Humidifiers

STULZ Direct Room Humidiers (DRH) are designed for stand-alone room applications. DRH are typically mounted on the perimeter wall serving mission critical applications, or any environment where tight humidity control is required. 

Solutions for DRH

  • Data centers

  • Libraries and museums

  • High Tech Manufacturing

  • Printing and duplication

  • Food and beverage

  • Agricultural and Tobacco

  • Health care facilities

  • Laboratories

  • Commercial offices



  • Mounts below the ceiling in a conditioned space

  • On wall or column with factory furnished mounts

  • Suspended from above in open space

  • Integral blower and washable filter

  • Absorption distance determined by RH of room

Control and Monitoring 

  • Engineered for single or multiple humidifier systems
  • Utilizes STULZ E2 Microprocessor Controller for integrated operation of up to 16 humidifiers per zone
  • Ultra-Series control boxes enclose up to eight power supplies each, providing power and control distribution
  • Proportional analog output from microprocessor converted to Pulse Width Modulation at humidifiers
  • Monitors and communicates various system functions and alarms including water quality via integrated control and/or optional BMS

Energy Rebates

Hand holding card with energy efficiency chart.

Qualify for energy rebates using STULZ Ultrasonic Humidifiers.

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