VFHC – Humidity Controller

VariFlow Controls Poster

The Vari-Flow Humidity Controller is part of the Vari-Flow Indoor Air Quality family of controllers.  The VFHC/VFHC-N are used to modulate fan speed to maintain a preset temperature and/or relative humidity.


  • Surface mounted controller
  • Modulates fan speed based on programmable humidity and/or temperature set point
  • Optional network communication over an RS-485 network
    • BACnet® or Modbus™ when ordered with network communication



Housing Material IP30


Mounting Surface mount
Sensor Range 10 to 65% RH; 50ºF to 104ºF (10ºC to 40ºC)
Sensor Accuracy +/-3.5% RH; +/-0.8ºF (0.4ºC)
Sensor Resolution 0.1%RH; +/-0.2ºF (0.1ºC)
Power 24V
Output Signal (2) 0-10VDC
Dimensions 2.85 x 4.85 x 1.00 (WxHxD) in