Processing and reporting usage information for an HVAC system controlled by a network-connected thermostat

  • US 10,443,877 B2
  • Filed: 12/26/2017
  • Issued: 10/15/2019
  • Est. Priority Date: 03/29/2012
  • Status: Active Grant
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First Claim
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1. A system for controlling operation of an HVAC system, the system comprising:

  • a temperature sensor;

    an electronic display;

    one or more processors, wherein at least one of the one or more processors is in communication with the temperature sensor and the electronic display and the one or more processors are configured to;

    receive temperature measurements from the temperature sensor;

    activate the HVAC system to control a temperature within a structure based on the temperature measurements received from the temperature sensor and a stored setpoint temperature;

    cause first historical data and second historical data representative of actual HVAC usage of the HVAC system being activated by the one or more processors to be stored for a first historical time interval and a second historical time interval respectively;

    process the first historical data and the second historical data to determine an HVAC usage difference between the first historical time interval and the second historical time interval;

    process the second historical data to determine a relative contribution of each of a plurality of causative agents towards the actual HVAC usage, wherein;

    the plurality of causative agents is selected from the group consisting of weather, temperature schedule, occupancy, use of auto-away, manual temperature settings, and time differences between the first historical time interval and the second historical time interval; and

    auto-away refers to the one or more processors adjusting a setpoint temperature to decrease HVAC usage based upon no occupant being present within the structure;

    generate an energy usage report that includes at least (i) the HVAC usage difference between the first historical time interval and the second historical time interval, and (ii) an attribution of a primary causative agent from said plurality of causative agents as a primary reason for the HVAC usage difference; and

    provide, via the electronic display of the system, the energy usage report that includes at least (i) said HVAC usage difference between said first and second historical time intervals, and (ii) the attribution of the primary causative agent from the plurality of causative agents as the primary reason for the HVAC usage difference.

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