Hoyme HAC – 12 – Universal Air Damper – 120Vac


HMI HAC – 12 Series – Inline Fresh Air Control Damper – 120 Vac



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This Inline motorized 120Vac Fresh Air Control Damper , Series HAC , fastens to an air duct in-line to control the flow of air, partially or completely, depending on its mechanical setting.

CSA International Certified. Satisfaction guaranteed.


HAC – 12 – One Motor


HAC – Belimo Actuator – 120Vac

HAC – 12 – H
Fresh Air Damper for Heat – 120 Vac

HAC – 12 – LT
-Fresh Air Damper Insulated with Thermal Switch – 120 Vac
4″ – 9″ in Diameter8″ – 20″ in DiameterMotor and controls are mounted 1″ away from Damper bodyInsulated with thermal switch mounted on Damper body
HAC-0x12-OP*
HAC-0x12-SP*
Various Belimo 120Vac Actuator models may be ordered

HAC – H – Larger sizes Over 20″ in diameter with Belimo Actuators.
HAC-0x12-OP*-H HAC-0x12-SP*-HHAC-0x12-OPO-LT
x = Diameter in Inches
*= P OPower Open or P CPower Closed Damper
S P* = includes End Switch
O P* = No End Switch
HAC-0x1 2-OPO <- the ” 2” in this position indicates 120Vac

General Damper Identification : i.e. HAC – 0612 – SPC – H (Special for heat)

SeriesDiameter (in)Motors120VacEnd SwitchPower Open/ClosedSpecial for heat
HAC0612SPCH

Features Include:

  • Easy to install in-line as part of Standard Air dDuct.
  • Durable, patented HMI HOYME ‘Spring Motor Drive’ with Nylon Bearings.
  • 26 ga. galv. steel from 4″Ø to 5″Ø.
  • 24 ga. galv. steel from 6″Ø to 9″Ø
  • 24 ga. galv. re-enforced steel from 10″Ø to 14″Ø
  • 22 ga. galv. re-enforced steel from 16″Ø to 18″Ø
  • Other sizes and weight of steel upon request.
  • These Dampers can be used for the new ventilation code which requires a designated exhaust fan, a centrally located switch marked ‘VENTILATION‘ and a Fresh Air Intake Damper, all interconnected to the Furnace Circulation Fan.
  • See HMI HoymeInterface Relay Adaptors‘ which have been specially designed for these Dampers and new ventilation codes.

Other options that may be added: