Sunny Boy wrote:MudFlapLip wrote:I drew in another register just outside the doorway of bedroom #1 in the newly attached photo. In theory, if I dropped a register there would it act as a source of heat similar to the stairwell concept? Would heat coming from the newly added register then "force" or cause the cool air to leave the room via the register I have already cut in under the window? I can see now how it will be difficult to move any volume of cold air from the room if I can't get a significant source to it. Maybe another option to use in conjunction with the ducting would be an inline fan? I'd think that would literally force the cold air from the room via the register. Any thoughts or ideas with that?
Yes, a vent without duct work extended down should draw from the warmer basement ceiling area. But how warm is the basement right below where you've drawn the register ? Heat/cold doesn't always go or do what you think. With a cold air return duct extended down near the basement floor the cold air being heavier sinks through the register and the extended duct restricts warm air from coming up through that register. By putting another register on the other side of that room, without extended duct, you'll get circulation by natural convection. But, only if there is a fairly good difference in air temps. While not as strong and quick as forced air, it will work.
However, one problem I see with your register location . If you want to heat #1 bed room, closing the door puts the heat on the wrong side of the door.
I think a study of the first floor and the basement ceiling, using an IR gun will give you a good idea of where the heat is going in the basement, what air temps you can get in those areas, and where you need to channel it upstairs.
That is a great explanation Paul thanks. Regarding the register outside the door, I was going with the concept that it is slightly warmer outside the bedroom so I could just keep the door open and let it get pulled into the room. I'm not sure if that would work either though considering your point of basement temps. It's obviously significantly warmer downstairs given stove location but I'm not sure if it's enough to make a difference for this particular scenario. I think the ducting to the floor that everyone has been saying is going to be a good start. An IR gun will definitely help locating another register should I see a need to install one. Thanks for your replies.