<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">My gut reaction is that it is slightly more efficient to run the system as you are. Hot air rises, so the downstairs unit heats the upstairs enough for your tastes. If you run the upstairs unit, it won’t keep the downstairs heat from coming up, so the upstairs unit probably won’t run much, only the short time when the upstairs temperature is low, which won’t be often. <div><br></div><div>A related question is whether not running the upstairs unit is causing any long term damage to itself by not running. <br><br>Peace,</div><div>Pat</div><div><br><div dir="ltr">Pat Horne <div>We support Habitat for Humanity</div><div><br></div></div><div dir="ltr"><br>On Nov 24, 2021, at 8:27 AM, eric@megageek.com wrote:<br><br></div><div dir="ltr"><font size="2" face="sans-serif">OK, this is more of a thought experiment,
but here is the back story. </font>
<br>
<br><font size="2" face="sans-serif">My house is over 200 years old. 2
years ago I got vinyl siding and better insulation. REALLY
good insulation.</font>
<br><font size="2" face="sans-serif">I have programmable thermostats (2 zones,
downstairs and upstairs.)</font>
<br><font size="2" face="sans-serif">I keep them at about 64 degrees when
I'm there.</font>
<br><font size="2" face="sans-serif">Turns out, the batteries in the upstairs
one went dead and my upstairs zone hasn't turned on in over a year.</font>
<br><font size="2" face="sans-serif">HOWEVER, I really like how the house
is. The downstairs is as warm as I want, and the upstairs is just
slightly cooler, but it's perfect for sleeping.</font>
<br>
<br><font size="2" face="sans-serif">My question is, is it more efficient
to have the upstairs not run heat? Or is the downstairs working much
harder to compensate?</font>
<br>
<br><font size="2" face="sans-serif">I know there are lots of variables,
but what do you guys think?</font>
<br>
<br><font size="2" face="sans-serif">Thanks!</font>
<br>
<br><font size="2" face="sans-serif">Moose</font><span>_______________________________________________</span><br><span></span><br><span>Shop-talk@autox.team.net</span><br><span>Donate: http://www.team.net/donate.html</span><br><span>Suggested annual donation $12.96</span><br><span>Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive</span><br><span></span><br><span>Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/patintexas@icloud.com</span><br><span></span><br></div></div></body></html>