I have a Vision pro 8000 2 stage stat w/ a Trane XV 90 Furnace..When the stat switches to our night set-point 72 @ 6:00pm. It holds the temp in all rooms within 1 degree and it calls for heat quite often to maintain that temp, and thats comfortable for us and our 2 girls, but as it gets later in the night it seem that the stat doesn't call for heat that often and the rooms drop down to a 3 degree difference...( the temp outside is the same ) is this normal for this stat? or if i switch to the White Rodgers 90 Series will I get a tighter temp range to the set point?
I have a forced air sytem
The stat always reads 72 and is in the hall