. This is our trouble area for heat in the winter. We can shut it off from the first floor via french doors, but all the cold air travels upstairs to three bedrooms.
I hate to tell you but the problem isn't cold air rising up to the bedrooms. The stairwell is on an outside wall, going up, towards a hip type framed roof. You are going to have a natural draft up that stairwell no matter the heat source and a natural down draft of cold air coming down those steps. You are drawing cool/cold air down, from the upstairs because there is little to no slope on the upstairs vertical walls. Any heat that goes up there goes straight to the ceiling. It's caused by the contraction and expansion of the cold and warm air. Something has to give or move, cold always wins.
You've got to move the air upstairs around, you will still have cold air present if the attic isn't well insulated, and will probably still have cold air coming down that staircase because of the lack of insulation that is present in the walls on the upper level. I know this, my house is the same way. The warm air will move up but it will only feel a little warmer, the warm air will not warm the vertical walls enough to stop the feeling of a draft in those rooms upstairs, or a cold draft coming down those stairs, cooling the floors on the bottom level.
A ceiling fan on the lower level will help distribute the air more, mix it with the warm air from the stove and the cold coming from the upper levels. You still will have to some how move the air around upstairs and try and warm those vertical walls before you will feel warmer upstairs. Also ceiling fans, or any type of fan slowly moving air upstairs will improve the warmth.
I must add that you have done a beautiful job on the house.
I also must add that I have NG here and right now I get corn for $130 per ton, 2 to 2 1/2 tons are the usual amount we use here. If using NG it would cost us at least $240 per month and not be as warm. And our NG furnace is 90% efficient Heil, all updated 5 years ago. And NG is very cheap here.
Last edited: