Lennox Industries Inc.

Ajay Iyengar

Eric Berg

Umesh Gokhale

Rohini Brahme

A compressor system includes a variable-speed compressor and a fixed-speed compressor. A control unit is operatively coupled to the variable-speed compressor and is operatively coupled to the fixed-speed compressor. A sensor is operatively coupled to the control unit and disposed in an enclosed space. The sensor measures at least one of a temperature and a relative humidity of the enclosed space and determines an HVAC load of the enclosed space. Responsive to a determination of the HVAC load, the control unit directs operation of the variable-speed compressor and the fixed-speed compressor.

Hybrid tandem compressor system and method of use

An HVAC system for a comfort zone includes a compressor, temperature sensor and controller. The controller is configured to receive a starting temperature from the temperature sensor, receive a desired temperature, and receive a desired time for the comfort zone to reach the desired temperature. The controller is further configured to determine a starting time to adjust cooling the comfort zone, the starting time determined based at least on the desired time, the desired temperature, the starting temperature, and a most-energy-efficient operating speed of the compressor. Once the starting time has been reached, the controller is further configured to communicate a command to the HVAC system to operate the compressor at the most-energy-efficient operating speed.

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Plano, TX, United States of America

Ajay Iyengar