Energy management system and method

A wireless thermostat to be disposed at a site for controlling an HVAC system, comprising:

• a display configured to present an operating condition of the wireless thermostat and including an adjustment selector to allow for manual adjustment of the operating condition of the wireless thermostat;
• a communication module configured to communicate with at least one mobile device associated with the site and allow for remote adjustment of the operating condition of the wireless thermostat;
• a sensor for detecting a presence in proximity to the wireless thermostat of at least one user and generating a presence signal in response to the detected user presence;
• a processor configured to implement changes in the operating condition in response to the manual adjustment at the adjustment selector and the remote adjustment at the mobile device;
• the processor in communication with the sensor to receive the presence signal and configured to transition the display between an awake state and a sleep state in response to the presence signal to reduce energy consumption of the wireless thermostat;
• and
• the processor in communication with a proximity detection module disposed remotely from the site, the proximity detection module configured to detect a location of the at least one mobile device relative to the site and initiate an altering of the operating condition of the wireless thermostat based on the detected location.

A wireless thermostat to be disposed at a site for controlling an HVAC system, comprising:

• a display configured to present an operating condition of the wireless thermostat and including an adjustment selector to allow for manual adjustment of the operating condition of the wireless thermostat;
• a communication module configured to communicate with at least one mobile device and allow for remote adjustment of the operating condition of the wireless thermostat;
• a sensor for detecting a presence in proximity to the wireless thermostat of at least one user and generating a presence signal in response to the detected user presence;
• a processor configured to implement changes in the operating condition in response to the manual adjustment at the selector and the remote adjustment at the mobile device;
• the processor further in communication with the sensor to receive the presence signal and transition the display between an awake state and sleep state in response to the presence signal to reduce energy consumption by the wireless thermostat;
• the display having a backlight capable of being illuminated and dimmed;
• the backlight configured to illuminate when the display is operating in the awake state and configured to dim when the display is operating in the sleep state;
• and
• the processor further in communication with a proximity detection module disposed remotely from the wireless thermostat, the proximity detection module configured to detect the location of the at least one mobile device relative to a boundary associated with the site and initiate an away setting of the wireless thermostat in response to detecting the at least one mobile device outside the boundary.