Comverge, Inc.

Emerson Electric Company

Emerson Electric, Inc.

Paul Michael Huddleston

John F. Rossi

Mark Lee Barton

Bradley a. Smith

Carl J. Mueller

Howard Ng

James P. Garozzo

Cecil H. Barrett

Russell Thomas House

Howard P Ng

Carl J Mueller

James P Garozzo

John F Rossi

Cecil Barrett

Bradley A Smith

Cecil H Barrett

A system for communicating across conventional HVAC wiring is provided. The system includes a communication device having a communication module capable of inducing low power, high frequency current signals into a single control wire coupling, for example, a thermostat with a compressor. The communication module includes a power supply module that draws power sufficient to operate the communication module from the existing HVAC wiring, so as to eliminate any need for batteries or external power sources. A second communication module may be coupled to the single control wire. The second communication module operates as a transceiver sending communication signals to, and receiving communication signals from, the communication module. In one embodiment, the communication module is disposed within a building, for example coupled to an electronic thermostat, while the second communication module is disposed outside the building near the compressor. The communication signals are RF modulated signals between 5 and 50 MHz so as to take advantage of and pass across parasitic capacitances found inherent in transformers or other coils disposed within HVAC loads.

HVAC communication system

Growing community of inventors

Sandy Springs, GA, United States of America

Paul Michael Huddleston