System of hvac fault detection using thermostat data

A heating, ventilation, and air conditioning (HVAC) analytics system comprising:

• an HVAC system comprising an HVAC unit and a controller configured to deliver conditioned air to a targeted area;
• an HVAC analytics engine in electronic communication with the HVAC system, the HVAC analytics engine comprising a processor, and a memory, the HVAC analytics engine configured to:
• obtain HVAC data;
• obtain an HVAC unit characteristic of the HVAC unit;
• determine performance parameters of the HVAC unit in response to the HVAC data and the HVAC unit characteristic;
• identify one or more system models for the HVAC unit in response to the performance parameters;
• determine one or more HVAC performance indices in response to the one or more system models, HVAC data, and the HVAC unit characteristic;
• generate an HVAC performance report in response to the one or more performance indices;
• and
• transmit the HVAC performance report to a user device.

A computer program product tangibly embodied on a computer readable medium, the computer program product including instructions that, when executed by a processor, cause the processor to perform operations comprising:

• obtaining HVAC data for an HVAC unit;
• obtaining an HVAC unit characteristic of the HVAC unit;
• determining performance parameters of the HVAC unit in response to the HVAC data and the HVAC unit characteristic;
• identifying one or more system models for the HVAC unit in response to the performance parameters;
• determining one or more HVAC performance indices in response to the one or more system models, HVAC data, and the HVAC unit characteristic;
• generating an HVAC performance report in response to the one or more performance indices;
• and
• transmitting the HVAC performance report to a user device.