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Toll Free: 1-229-273-9558


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Monday to Friday: 8am to 5pm EST
Saturday and Sunday: Closed
Phone: 1-229-273-9558
After Hours:
Contact our Warranty Support Group.

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Controllers / Thermostats

Designed to operate a fully or partially redundant air conditioning system used for cooling telecommunication shelters, huts, and cabinets, motor control centers and e-houses. A complete line of thermostats and controllers for control of the environment in the classroom and commercial buildings is available from Marvair.

CommStat 3 HVAC Controller

Marvair CommStat 3 HVAC Controller

The CommStat 3™ is factory programmed with industry standard set points to facilitate installation. If desired, each of the set points can be quickly and easily changed in the field by the installer. The lead/lag controller insures equal run time on each air conditioner and allows the lag unit to assist upon demand.

CommStat 4 HVAC Controller


A single CommStat 4 will control two redundant air conditioners or heat pumps, but has the capability to be daisy chained with a second CommStat 4 units for controlling up to four air conditioners or heat pumps in a shelter. The CommStat 4 has seven outputs for remote alarms or notification.

CommStat 6 HVAC Controller

Marvair CommStat 6 HVAC ControllerThe CommStat 6 is an HVAC controller designed specifically for controlling two redundant air conditioners with two stage compressors in an industrial application. In addition to the control of the air conditioners, the CommStat 6 has multiple outputs for remote alarms or notification.

The CommStat 6 is factory programmed with standard industry set points, but can be configured on site. Settings are retained indefinitely in the event of a power loss.