LsFarm wrote:What's to stop the hot air from making a quick 'U turn' and going back down the 'cold air gap' to to inlet of the duct..??
If you look at the floor vent grille itself, the forward part (where the air is being fan forced up from the basement) has louvers deflecting the air forward into the room. The back 1/2 of the grill has louvers angled towards the back of the house.
Most of the time I wont have the vent powered & I'm hoping the warm air will rise & the cold air will drop by itself. When it gets really cold, I kick on the blower fan.
LsFarm wrote:I guess since you have the open stairway, this will help.. have you sat on the stairs when the stove is heating the house? Can you feel the cold air rushing down the steps?
If you stand on the landing (base of the steps at the front door) you can feel it quite a bit cooler on your feet. Also, when the front door is opened, all the cold air falls down the stairs to the basement where the TLC is.
Seems to work pretty well but I'm always tinkering!