Abstract: A heating, ventilating, and air conditioning (HVAC) system includes a thermostat, a temperature sensor, a plurality of occupancy sensors in a plurality of zones in a room in a building, a plurality of airflow vents in the plurality of zones in the room, and a motor coupled to each of the plurality of airflow vents. The system receives temperature set point data from the thermostat, receives temperature data from the temperature sensor, receives occupancy data from the occupancy sensors, turns on a heating unit or a cooling unit as a function of the temperature set point data from the thermostat and the temperature data from the temperature sensor, and controls the flow of heated air or cooled air into the zones in the room by transmitting a signal to one or more of the motors so as to adjust the plurality of airflow vents in the room.