Enhanced HVAC performance monitoring system and method thereof

A method for monitoring performance and determining indoor air temperature change rate (IATR) and indoor air dehumidification rate (IDHR) to account for exterior airflow within a conditioned space, comprising:

• initiating a performance evaluation period through an HVAC controller communicatively coupled to the HVAC system;
• monitoring the operation of the HVAC system using a monitoring system controller wherein a monitoring system controller comprising a processor and memory executes instructions that, during HVAC operation, record outdoor air temperature, indoor air temperature, indoor relative humidity, and HVAC ON/OFF status at a prescribed interval;
• obtaining baseline data for one or more environmental factors from at least one of the following:
• the HVAC controller communicatively coupled to the monitoring system controller;
• one or more sensors communicatively coupled to the HVAC controller;
• or
• one or more or databases communicatively coupled to the monitoring system controller;
• generating a IATR and IDHR during the performance evaluation period;
• generating at least one of the following values:
• circulating airflow value or an outdoor airflow, wherein the outside airflow value into the conditioned space can be determined by plotting outdoor air temperature versus indoor humidity and determining the slope of the best-fit line;
• and generating, via a user interface, an alert when the circulating airflow value or the normalized outside-air entry exceeds a predetermined threshold for a predetermined duration.

A system for monitoring and evaluation of an HVAC system for a conditioned space, comprising:

• a monitoring system controller having a processor and memory, wherein the HVAC system further includes an HVAC controller, wherein executes instructions to record outdoor air temperature, indoor air temperature, indoor relative humidity, and ON/OFF system status at a prescribed interval;
• at least one sensor communicatively coupled to the monitoring system controller, wherein the sensor is configured to monitor one or more environmental parameters inside a structure;
• a memory;
• and
• a transceiver configured to communicate with one or more external sources for obtaining monitoring data including at least one of the following:
• environmental information;
• HVAC performance data provided by a manufacturer;
• or
• measured HVAC data;
• wherein the monitoring system controller is configured to generate at least one of the following:
• adjusted air temperature change rate (IATR) value (IATRadj), indoor air dehumidification rate (IDHR), Sensible Heat Ratio (SHR), circulating airflow and/or outside air entry into the conditioned space on an ongoing basis, and wherein the outside airflow value into the conditioned space can be determined by plotting outdoor air temperature versus indoor humidity and determining the slope of the best-fit line;
• and
• generating, via a user interface, an alert when the circulating airflow value or the normalized outside-air entry exceeds a predetermined threshold for a predetermined duration.