I have a programmable thermostat (2 actually, greenhome.huddler.com/products/honeywell-rth7500d1007-thermostat) and I'm trying to figure out the sweet spot for setting the "sleep" settings for heat).
A quick overview on the settings:
I can set a temp setting and time for each.
So, my question is, how "low" can I set the temp and still have the unit be efficient when it needs to heat the space back up (they call it "recovery"). I have a feeling if i set it too low (say 50 degrees) and then it has to heat the space back up to 72 degrees that the additional gas used to heat up the space might be more than it would to maintain that space at 72.
I know there are tons of variables like sq footage, tonnage of furnace, insulation, windows etc, etc.. but I was hoping for some generic rule of thumb or basic equation. I'd like to get the setting as low as possible on this thermostat since this zone is on the first floor and we sleep on the second (a different zone/thermostat).
The home is only 3 years old, so I'd give good marks on insulation and windows and we live in the mid-atlantic, so night time temps can drop into the 30's/20's on average. This zone is gas if that makes a difference (i think it does).
Any ideas thoughts or opinions would be appreciated.
Edited by pgallett - Mon, 23 Feb 2009 15:32:46 GMT