Patent ID: 9690307
Date: 2017-06-27
CPC Classifications: F24F,F25B,F25D,G01K,G01N,G05B,G05D,Y10S

Claim:
1. A monitoring system for a heating, ventilation, or air conditioning (HVAC) system of a residential or commercial building, the monitoring system comprising: an evaporator unit device including a first current sensor that measures current supplied to a circulator blower of the HVAC system, wherein the measured current from the first current sensor is used to diagnose a problem with the circulator blower; a first temperature sensor that measures a temperature of refrigerant flowing between a condenser of the HVAC system and an expansion valve of the HVAC system; a second temperature sensor that measures a temperature of refrigerant flowing between an evaporator of the HVAC system and a compressor of the HVAC system; and a condenser unit device that communicates with the evaporator unit device, wherein the condenser unit device includes a second current sensor that measures current supplied to the compressor, wherein the evaporator unit device transmits sensor data to a remote monitoring service over a data network.