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Method and system using an HVAC air handler and thermostat for building energy loss testing, monitoring and cost control

  • US 9,188,508 B1
  • Filed: 12/01/2013
  • Issued: 11/17/2015
  • Est. Priority Date: 12/06/2012
  • Status: Expired due to Fees
First Claim
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1. An air handler system including supply duct leakage testing functions, comprising:

  • a. an air handler comprising a return orifice, an air blower, and a supply orifice;

    b. a duct system comprising at least one supply duct, coupled with said supply orifice, whereby to convey air flow generated by said air blower;

    c. an outlet terminating each supply duct;

    d. means for temporarily blocking air flow through the outlets in combination with said outlets;

    e. means for opening said return orifice to the unrestricted intake of air from an area outside the air handler, whereby said blocking and said return orifice means define a path for air with supply duct leakage as the only remaining substantial restriction to the air flow;

    f. means for measuring at least one air handler operating parameter adapted for calculating supply duct leakage rate through the air handler; and

    g. means for converting the operating parameter to duct leakage air flow rate,whereby said air handler system measures supply duct leakage air flow rate from time to time without the need for external test equipment, to aid in achieving and maintaining energy efficiency in a building and determining the need for maintenance or repairs.

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