> Great, unless the weather changes. If it's suddenly cold outside, it
> takes longer, so it doesn't hit the temperature on time. But worst,
> when it's a warm spell, the furnace kicks in too early, and brings up
> the temperature too soon,
I've not looked into what's available, but it certainly doesn't have to be
that way. The thermostat can "know" how long it takes the house to warm up
with full heat applied, and get a new measurement each time it runs the
furnace. It's all SMOP (a small matter of programming).
Randall
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