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Old 12-11-2009, 10:44 AM   #1
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Q about circulating warm air from living room..


I have a wood stove in my living room, a vaulted ceiling and a ceiling fan. The kitchen is right next to the living room, but the ceiling is much lower, so the warm air travels to the kitchen somewhat decently, but not that great. The bedrooms are on the opposite end of the house, and they stay pretty chilly in the winter time. Not freezing, but definitely not the 68-70 that the livingroom is.

My thought is that since heat rises, can I cut in some kind of ductwork at the top of the vault with some sort of fan unit to help pull the warm air from the top of the vault, run the ductwork through the attic and push it into the back bedrooms to help circulate some of the warm air into the back of the house? Is there anything like this out there? How much $$$ am I looking at?

Thanks, Alan

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Old 12-11-2009, 12:11 PM   #2
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Q about circulating warm air from living room..


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Is there anything like this out there?
Duct booster fans, but you should first get the fan curves from the manuf.

Do your stack effect, etc., calculations; it has to work on paper before it works in the real world.

I guess you could use a room heater as an experiment. The heater's duty cycle and max wattage will tell how much heat you reasonably need.

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Old 12-11-2009, 12:37 PM   #3
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Q about circulating warm air from living room..


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Duct booster fans, but you should first get the fan curves from the manuf.

Do your stack effect, etc., calculations; it has to work on paper before it works in the real world.

I guess you could use a room heater as an experiment. The heater's duty cycle and max wattage will tell how much heat you reasonably need.

We have one of those electric oil heaters in one of the bedrooms and even on the 600w setting and the dial at a 2 or 3 out of 10, it keeps the room probably 70*

That whole stack effect thingy... huh? Over my head.
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Old 12-11-2009, 02:34 PM   #4
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Q about circulating warm air from living room..


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We have one of those electric oil heaters in one of the bedrooms and even on the 600w setting and the dial at a 2 or 3 out of 10, it keeps the room probably 70*

That whole stack effect thingy... huh? Over my head.
For the heater at the max wattage setting, how many minutes on, how many minutes off, typically?

Warm air naturally rises, by convection.
http://en.wikipedia.org/wiki/Stack_effect

Also, Been There has taught me, via this forum, that you need adequate air returns in those rooms.
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Old 12-11-2009, 08:12 PM   #5
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Q about circulating warm air from living room..


What does an air return do?
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Old 12-11-2009, 08:26 PM   #6
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What does an air return do?
Allows the rooms to circulate the new air you will be adding to it.

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