A method of monitoring a heating, ventilation, and air conditioning (HVAC) system to detect erroneous sensor installation, the method comprising: monitoring, by a controller , operation of the HVAC system ; determining, by the controller , whether a circulation fan has been operational for a first predetermined time interval; responsive to a determination that the circulation fan has been operational for the first predetermined time interval, determining, by the controller , whether a cooling demand is present; responsive to a determination that the cooling demand is present, determining, by the controller , whether the HVAC system has been conditioning air for the first predetermined time interval responsive to the cooling demand; characterized in responsive to a determination that the HVAC system has been conditioning the air for the first predetermined time interval, determining, by the controller , whether a difference between an indoor air temperature value corresponding to an enclosed space and an air temperature value from a discharge air temperature (DAT) sensor that is positioned within a discharge air duct of the HVAC system is greater than a predetermined temperature value; responsive to a determination that the difference is not greater than the predetermined temperature value, forwarding, by the HVAC system to a monitoring device associated with a service provider, a message indicating that the DAT sensor positioned within the discharge duct of the HVAC system is improperly installed; responsive to a determination that the circulation fan has not been operational for the first predetermined time interval, returning to the monitoring step; and wherein the first predetermined time interval comprises at least three minutes. monitoring, by a controller , operation of the HVAC system ; determining, by the controller , whether a circulation fan has been operational for a first predetermined time interval; responsive to a determination that the circulation fan has been operational for the first predetermined time interval, determining, by the controller , whether a cooling demand is present; responsive to a determination that the cooling demand is present, determining, by the controller , whether the HVAC system has been conditioning air for the first predetermined time interval responsive to the cooling demand; characterized in responsive to a determination that the HVAC system has been conditioning the air for the first predetermined time interval, determining, by the controller , whether a difference between an indoor air temperature value corresponding to an enclosed space and an air temperature value from a discharge air temperature (DAT) sensor that is positioned within a discharge air duct of the HVAC system is greater than a predetermined temperature value; responsive to a determination that the difference is not greater than the predetermined temperature value, forwarding, by the HVAC system to a monitoring device associated with a service provider, a message indicating that the DAT sensor positioned within the discharge duct of the HVAC system is improperly installed; responsive to a determination that the circulation fan has not been operational for the first predetermined time interval, returning to the monitoring step; and wherein the first predetermined time interval comprises at least three minutes. <EOS>