I live in a 2-story rowhome and I am noticing a very counter-intuitive effect of my heat flow; the downstairs stays much warmer than the upstairs. I have radiator heating, and I notice also that the downstairs radiators are always much hotter than the upstairs. The thermostat is located on the first floor, and it reaches the desired temperature rather quickly. As a result, the upstairs radiators aren't getting as hot because the furnace kicks off before they have a chance to get hot enough to heat the rooms. In order to solve this problem, I am considering installing a vent and a small duct in the ceiling above the thermostat in order to transfer the warm air at the thermostat into the room upstairs. I am hoping that this will drop the temp. at the thermostat and cause the furnace to stay on longer to properly heat the upstairs.
Before I take on this project, I want to ask the question if anyone else has dealt with this sort of issue, and if anyone thinks that this plan will not make a difference. Your responses are greatly appreciated.