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HVAC Product Type
Zone Controllers
Duct Size
8" Duct
Normal State
Normally Closed
Ease of Installation
Advanced (Installs > 60 minutes)
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Create Air Duct Zones to Remotely Control Air Flow and Reduce the Expense of Heating and Cooling
8-In Normally Closed 24V AC Duct Damper - ZC108
Suncourt ZC108 Zonemaster Electronic Air Duct Damper, 8 Inch Diamerter
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Wiring Instructions
Suncourt ZC108 Zonemaster Electronic Air Duct Damper, 8 Inch Diamerter
Item# 307109C
Price: Normally $71.95 
Hot Deal $65.87
Free shipping on orders over $175 - See Details


  • Reduces energy and utility costs
  • Heat and cool only the occupied areas of a home
  • Dampers designed to be electronically opened and closed
  • Includes 24 Volt power supply transformer
  • Controllable via INSTEON network

Essential Info

As energy costs rise, it is important to find different solutions to help conserve energy and keep your heating and cooling expenses to a minimum. Because heaters and air conditioners are the largest energy consumers in homes today, one way to start reducing the use of energy is to install electronic air duct dampers. The Suncourt Zonemaster is a 8-Inch Diameter Normally Closed Electronic HVAC Air Duct Damper with Power Supply that allows you to shut off airflow to unoccupied or unused rooms, which increases the flow of air to the areas that really need it. The airflow changes the temperature in the occupied areas faster than conventional air ducts, providing shorter run times for your heating and/or cooling system, allowing you to use less energy and save money through less wasted run time. By adding one or more dampers you can create zones throughout your home that can be electronically controlled, and even integrated into an INSTEON network. A 24 Volt hardwired power supply is included that can be used to connect with an HVAC zone controller and a multi-zone thermostat.


What's Included

  • 1x - 8-Inch Diameter Normally Closed Electronic HVAC Air Duct Damper
  • 1x - 24 Volt Power Supply Transformer
  • 1x - Installation Instructions
  • More Info

    Multi-Zone Control
    Enjoy having complete electronic control of which rooms your HVAC system heats or cools by using dampers in conjunction with a RCS HVAC air duct 2-Zone Controller, or 4-Zone Controller and a multi-zone thermostat:

    Single Zone Control with INSTEON
    This electronic damper also offers the flexibility of being controlled from your INSTEON network by connecting a plug-in 24V AC power supply to the damper and plugging it into an ApplianceLinc. Once that connection has been made the damper can then be operated from any INSTEON controller, such as a KeypadLinc, SwitchLinc or RemoteLinc; all items sold separately.

    For wiring between the damper and zone controller, damper and power supply, or zone controller and power supply, simply run 2-conductor wire between them. 18-gauge or 22-gauge wire is recommended.

    Normally-Open or Normally-Closed Models
    When no power is supplied to the Normally Closed unit, the damper will be closed. When no power is supplied to the Normally Open unit, the damper will be open.

    Additional Sizes Available with Power Supply
    Normally Closed:
    6 inch diameter
    10 inch diameter
    12 inch diameter
    Normally Open:
    6 inch diameter
    8 inch diameter
    10 inch diameter
    12 inch diameter



    Manufacturer Product No.:ZC108
    Type:Normally Closed
    Power Requirements:24V AC hardwired power supply (included)
    Weight (pounds):3
    Operating Temperature:40°F to 140° F
    Power Consumption:.25 amps

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Suncourt Inc, Tel: (800) 999-3267


    Wiring Instructions       
    Wiring Instructions       


    35 Ratings
    5 star: 60%  (21)
    4 star: 14%  (5)
    3 star: 23%  (8)
    2 star: 3%  (1)
    1 star: 0%  (0)
    Average Customer Rating
    (35 customer ratings)
    Share your thoughts with other customers
    EDWARD -- warren, NJ   7/4/2014
    Excellent product. Excellent price. Fast reliable shipping.
    WILLIAM -- tucson, AZ   1/16/2014
    Item is as described. Arrived on time
    WILLIAM J -- fort johnson, NY   11/17/2013
    The 8 inch Zonemaster is a well built product....
    BRIAN -- chatham, NJ   7/23/2012
    Works as advertised. The instructions aren't quite clear on how the transformed should be mounted.
    ELKE -- pompano beach, FL   9/14/2011
    Works Great Thanks
    PATRICK -- plymouth, MI   7/18/2011
    I ordered 2 normally closed dampers but received 1 normally closed and 1 normally open. I was able to convert it but it was not what I ordered.
    THOMAS -- sarasota, FL   6/19/2011
    Works good, but the damper seal is just cheap stick-on weatherstripping that falls off.  Had to buy new and glue on properly.
    JEFF -- theresa, WI   2/6/2011
    Great product at a great price
    STEVE -- harriman, TN   1/9/2011
    installation a breeze, shipped on schedule, pleased with product so far but not yet in service.
    JAMES -- mission, KS   1/3/2011
    Works great - this is the fourth one I have bought. Some have been operating now for two years with no issues.
    STEVE -- fallston, MD   12/9/2010
    Works great!
    DEREK -- hartland, WI   9/14/2010
    Exactly what I was looking for. Instructions had much more info than I was anticipating, and look to be written by someone who is actually fluent in English. Operation is smooth and quiet. I was expecting it to slam open and shut, but was pleasantly surprised that the motor slowly revs up and smoothly opens the damper after a several moments. Note that it does take several moments to start to open, so the first time you hook it up, wait a bit before you start panicking :). Anyway, I bought two of these guys and have installed one so far. It's been running great for about two weeks so far.
    EDWARD -- oak creek, WI   2/26/2010
    The item was shipped promptly and packed carefully. I am very pleased with the service.
    DANA E. -- bonney lake, WA   12/2/2009
    real good place to shop
    CRAIG -- reno, NV   5/30/2009
    Great product, great company! Customer service is excellent! I have been shopping at Smarthome for just over a year now and am very pleased.
    ARMANDO -- pembroke pines, FL   10/6/2008
    great product, working as described, thanks
    BRUCE -- boylston, MA   7/14/2008
    the included transformer likely adds to cost, yet is not applicable to multiple damper installations as each damper would use up one of these hardwired devices; disinclude this transformer, list it beside the 3061 and let customer choose! I now have two of these included excess transformers to recycle!
    ROBERT -- sandy springs, GA   5/27/2008
    Simple, easy installation.
    JOHN O -- pesotum, IL   2/28/2008
    Great item! should see a return on my investment in no time!
    BRECK -- gainesville, GA   10/26/2007
    Product was exactly as described on SmartHome's website. Installed easily and worked well the first try.


    24VAC 40VA Power Supply w/ Auto-Resetting Fuse  2-Conductor 18-Gauge Unshielded Cable, 1000 Feet  2-Conductor 22-Gauge Unshielded Cable, 1000 Feet  HVAC 2-Zone Controller 
    24VAC 40VA Power Supply w/ Auto-Resetting Fuse  2-Conductor 18-Gauge Unshielded Cable, 1000 Feet  2-Conductor 22-Gauge Unshielded Cable, 1000 Feet  HVAC 2-Zone Controller 
    HVAC 4-Zone Controller  INSTEON On/Off Module  X10 Universal Module   
    HVAC 4-Zone Controller  INSTEON On/Off Module  X10 Universal Module   

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