Abstract: An environment control system for controlling the temperature in a room, the system comprises a heating and cooling system; a thermostat for monitoring the temperature within a room and controlling the heating and cooling system; a motion sensor for detecting whether a door or window to the room has been opened; a presence detector for detecting whether the room is currently occupied; and a control system in communication with the thermostat, the motion sensor, and the presence detector, the control system being configured to control the room's temperature via the thermostat based at least in part on signals received from the thermostat, the motion detector and the presence detector.