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Lennox Fan Speed

Bob01
Bob01 Member Posts: 1
in THE MAIN WALL
<span style="font-size:12pt">I just installed a Lennox Elite G61MPV-60-91 furnace and a Signature XC21-048 air conditioner with a ComfortSense 7000 thermostat.  I have a two-story colonial home and a finished basement and have only the one system.  When the fan is set to ON it runs at a low speed between heating cycles (38% of full speed I’m told), just barely circulating air. It’s winter here in Maryland so that is not a particular problem now.  However in the summer I want the fan to run at high speed between cooling cycles circulating air from the cooler lower floors to the upper floor.  My installer tells me that between cycles the fan will not run at high speed, only at low speed.</span>

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<span style="font-size:12pt">Is this correct?  If so, why?  It has been my experience that in multi-story homes with one system the fan needs to run constantly at a high speed to keep the upper floor cool.</span>

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