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bluefin
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# Posted: 1 Dec 2021 10:42
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I added a 15x22 space ( 16' ceiling ) attached to an existing 18x22 log cabin. I also added a second floor above the old space. However, since I moved my woodstove into the new space, I am looking for a way to bring heat into the old space ( i do have two doorways but they dont seem to be bringing heat in given the high ceiling in new space ). So thinking of adding a vent and a small fan behind the stove pipe ( through the new upper floor joist ) to bring warm air into old space. Any suggestions on size/CFM I should use ? On the old side, i will just add some pipe to direct into that space. thx
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Brettny
Member
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# Posted: 1 Dec 2021 11:21 - Edited by: Brettny
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Blow cold air at the floor to the stove in the doorway. A $20 box fan works fine.
Warm air always wants to rise above cold. Move the cold air to the stove and the hot air will replace it.
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gcrank1
Member
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# Posted: 1 Dec 2021 12:00
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A mid-size box fan at the coldest end of our 16 x 24 with cath ceiling does the trick nicely.
After the place has a good saturation heat Ive cut back to a little table fan, quieter and uses less energy.
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bluefin
Member
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# Posted: 1 Dec 2021 19:18
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This is an off-grid cabin so i was thinking of more like a 6" inline, low amp fan that could draw in from warm room and blow into cold room. I think the bigger fans would have too much draw in winter when much less solar. I do have two stove fans that I will turn towards the doorways as well. thx
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gcrank1
Member
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# Posted: 1 Dec 2021 20:19
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Rethink the direction and placement, the fan wont care but the air circulation will.
It was counter-intuitive for me to blow the cold toward the stove but it worked way better.
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Brettny
Member
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# Posted: 2 Dec 2021 06:12
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It's going to be prety hard to blow heat down from a 16' ceiling with a 6in slow speed fan. It may work if you can connect the 16' ceiling into the old space.
Blowing hot air through a fan seams to cool it for me. Move the hot air slow and the cold air fast. If that makes any sence.
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bluefin
Member
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# Posted: 2 Dec 2021 11:36
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thanks...the fan would be at 8' level...right behind the woodstove. Thought I'd draw it in as it rose. Thanks for all the ideas folks.
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