Gas and Oil Home Heating Furnaces - Room Over Garage

I have a 4 bedroom colonial with actually two bedrooms over a two car garage and the classic problem of these two rooms not getting warm enough. Part of the problem I feel is the 2nd floor zone thermostat is located in the center hall which gets some heat rising up from the 1st floor so this causes the thermostat to shut the zone down preventing the bedrooms from warming. I was wondering what would happen if I moved this thermostat to the inside wall between the two cooler bedrooms? Any ideas? I figure it would be easy to slow the convection of heat in any of the other rooms on the second floor if they now get too warm. Thanks in advance or any replies. New windows in the two bedrooms and additional insulation in the attic helped quite a bit but still not 100%.

If you are indeed seeing that thermostat reach set point before the rooms are warm, I guess your theory just could be true. You can experiment if you want and run jumper wire from your existing location to your prefered new mount location and try it.

I did such a thing recently in two story duplex rental where the downstairs was vacant. I removed the downstairs thermostat. I left the base plate on the wall. I connected new long length of thermostat gauged wire to a new location inside a bedroom where I mounted the thermostat (and an extra base plate that I had on hand). Then I closed the door. Now when the room calls for heat, it warms up more so that room and the entire upstairs to the correct temperature, and leaves the downstairs 10 degrees cooler, or so, to save on the heat bill while it is vacant.