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HVAC SYSTEM AIR FILTER DIAGNOSTICS AND MONITORING

  • US 20150330650A1
  • Filed: 05/14/2015
  • Published: 11/19/2015
  • Est. Priority Date: 05/15/2014
  • Status: Active Grant
First Claim
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1. A monitoring system for a heating, ventilation, or air conditioning (HVAC) system of a building, the monitoring system comprising:

  • a monitoring server, located remotely from the building, configured to (i) receive operating parameter data from a monitoring device at the building that measures an operating parameter of the HVAC system, (ii) generate a plurality of data clusters from the operating parameter data, each data cluster corresponding to operating parameter data generated during steady-state operation of the HVAC system, (iii) calculate an average operating parameter value for each data cluster, (iv) calculate normalized operating parameter values based on normalizing the average operating parameter values for the data clusters over a predetermined normalization time period, (v) compare the normalized operating parameter values with a threshold, (vi) determine whether an air filter of the HVAC system needs to be replaced based on the comparison, and (vii) generate a notification based on the determination indicating that the air filter needs to be replaced.

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