Abstract: Systems and methods for monitoring, controlling and limiting utility usage for a plurality of units in a building. An example system includes a controller and one or more sensing devices in signal communication with the controller using a buildings existing thermostat wiring. The system senses the state of a thermostat, the air temperature near each thermostat and the pipe/ducting temperature in each of a plurality of units. The pipe/ducting sensor monitors the temperature of piping or ducting leading from a thermostatically controlled supply valve to the unit requesting heating or cooling. Being able to use existing building thermostat wiring allows for installation into older buildings. The controller records utility usage information for each of the plurality of units based on information received from the one or more sensing devices and communicates with a website.

Abstract: Systems and methods for monitoring utility usage for a plurality of units in a building. The system includes a controller and one or more sensing devices in signal communication over existing building thermostat or other control wiring with the controller. The sensing devices sense the state of a thermostat and the air temperature in each of the plurality of units as well as the temperature of utility transport piping leading to each of the plurality of units. The controller records utility usage for each of the plurality of units based on information received from the one or more sensing devices and provides an audit trail to verify delivery of the utility and detect and report faults in the utility delivery system. System faults are transmitted to a user as an audio alert using an electronically recorded human voice.