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Method and systems for setting an air filter change threshold value in an HVAC system

  • US 8,613,792 B2
  • Filed: 06/20/2011
  • Issued: 12/24/2013
  • Est. Priority Date: 06/20/2011
  • Status: Active Grant
First Claim
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1. A method of setting an air filter change threshold value for an HVAC system, the HVAC system having a number of controllable HVAC components including a fan, wherein the fan, when activated, drives air through the air filter of the HVAC system, the method comprising:

  • turning the fan of the HVAC system “

    on”

    to drive air through the air filter;

    with the fan “

    on”

    , obtaining a measure related to an amount of flow restriction presented by the air filter;

    determining an air filter change threshold value based, at least in part, on the measure related to the amount of flow restriction presented by the air filter; and

    storing the air filter change threshold value.

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