An actuator valve HVACHVAC (Heating, Ventilation, and Air Conditioning) is a device that controls the flow of air through an HVAC system. It consists of a valve body with two or more ports, as well as a driver which converts electronic signals into mechanical motion. Actuator valves are typically used to switch between different modes in an HVAC system such as cooling, heating, and venting, which can help regulate temperature, humidity, and air pressure within the environment. By controlling the flow of air, the actuator valve keeps your space comfortable and energy efficient.