Originally Posted By: mlord
the discussion is about whether to turn the thermostat down at night or not

That's actually not where I was coming from. I doubt that 8 hours of a few degrees cooler is going to have a significant effect on the heat of the walls, certainly not enough to cause the kind of cycling you referred to earlier. I was thinking more of turning the temperature down 20 degrees or more while away for a weekend.
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Bitt Faulk