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Selectable efficiency versus comfort for modulating furnace

  • US 9,316,413 B2
  • Filed: 06/11/2008
  • Issued: 04/19/2016
  • Est. Priority Date: 06/11/2008
  • Status: Active Grant
First Claim
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1. A method of operating a modulating forced air furnace, the method comprising the steps of:

  • accessing a defined relationship between a circulating blower speed and a plenum temperature, wherein the plenum temperature has a non-constant relationship with the circulating blower speed over at least a range of circulating blower speeds;

    operating the modulating forced air furnace in accordance with the defined relationship between the circulating blower speed and the plenum temperature such that a substantially non-constant plenum temperature is produced over at least a range of circulating blower speeds.

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