What is the definition of a motorized damper HVAC? A motorized damper HVAC is a device that controls the flow of air into and out of a particular space. It is typically installed in a duct system, and is operated by an electric motor. The damper opens when the motor is engaged, allowing air to flow into the space, and closes when the motor is disengaged, blocking air flow. Motorized dampers are used in many areas of HVAC, such as in heating, ventilation, and air conditioning systems. They are also useful for controlling the temperature of a single room or area, as they can be used to shut off the flow of hot or cold air. Motorized dampers are also often used to control air flow in air handling units, such as air conditioning units, fan coil units, and air handling units in commercial buildings. Motorized dampers are also used to control air flow in air handling units in industrial applications. They