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Heat basement with warm attic air thelooch 05-17-2006
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Posted by thelooch on May 17, 2006, 7:58 pm
I have a below ground basement which is always cold unless you turn the
heat on. Even on a warm summer day you need to turn on the heat to
bring it up to a comfortable temperature. It's well insulated, but the
sun doesn't hit any of the wall to warm it up.

As I crawled around in my attic the other day the heat was almost
unbearable. It was 30 degrees outside and must have been 45 in the
attic. I was thinking to myself, why can't this warm attic air be used
to heat the basement? I think all you would need is a vent running
from the attic to the basement with a fan pumping the air through it.
The drawbacks I could see to this system are that there is fiberglass
dust in the attic, the system would only work in the summer, and the
air in the attic seemed to smell funny, although it may have just been
the heat.

Has anyone ever tried to implement such a system?


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Posted by larry on May 17, 2006, 8:48 pm
thelooch wrote:
> I have a below ground basement which is always cold unless you turn the
> heat on. Even on a warm summer day you need to turn on the heat to
> bring it up to a comfortable temperature. It's well insulated, but the
> sun doesn't hit any of the wall to warm it up.
>
> As I crawled around in my attic the other day the heat was almost
> unbearable. It was 30 degrees outside and must have been 45 in the
> attic. I was thinking to myself, why can't this warm attic air be used
> to heat the basement? I think all you would need is a vent running
> from the attic to the basement with a fan pumping the air through it.
> The drawbacks I could see to this system are that there is fiberglass
> dust in the attic, the system would only work in the summer, and the
> air in the attic seemed to smell funny, although it may have just been
> the heat.
>
> Has anyone ever tried to implement such a system?
>

we had a local guy try a similar thing last summer. He ran
two 12" pipes from the crawl space (under house) to attic,
to "swap" cool foundation air with hot attic air, to reduce
air conditioning load. And added a 3/4 hp blower. Result:
worked great for about 30 minutes, then the floors started
to get warm ;-) he has good mechanical skills, just needs
the math to work out these things, or nick's phone number!

-larry / dallas


Posted by Shopdog on May 17, 2006, 9:34 pm
I wonder if you were to get insulated round duct, the kind that has the
spring in it. If you were to run this down to your basement and have a
blower attached at either end. My thought would be to have the blower in the
basement (only due to the hight heat in the attic) I would also build an
enclosure for in the attic, attach the duct to one end of the enclosure and
have the other end fitted for a filter (to remove dust and fibers) I think
this is doable! Great idea too! I have a woodshop in my garage and thinking
about this, maybe this would work for me. Seeing that the heat rises and the
second floor of my garage is heated (its another workshop and rec room up
there) I wonder if I could bring enough warmth down to the shop to make it
comfortable.

Searcher



Posted by Edwin Pawlowski on May 17, 2006, 10:34 pm

> Great idea too! I have a woodshop in my garage and thinking
> about this, maybe this would work for me. Seeing that the heat rises and
the
> second floor of my garage is heated (its another workshop and rec room up
> there) I wonder if I could bring enough warmth down to the shop to make it
> comfortable.

Comfort depends on the temperatures, but it will bring down the heated air
and is certainly worth the minimal effort required. . May be just as cheap
to run a second heater though. It certainly won't be free. (except in
summer)



Posted by Tomes on May 17, 2006, 10:21 pm
>I have a below ground basement which is always cold unless you turn the
> heat on. Even on a warm summer day you need to turn on the heat to
> bring it up to a comfortable temperature. It's well insulated, but the
> sun doesn't hit any of the wall to warm it up.
>
> As I crawled around in my attic the other day the heat was almost
> unbearable. It was 30 degrees outside and must have been 45 in the
> attic. I was thinking to myself, why can't this warm attic air be used
> to heat the basement? I think all you would need is a vent running
> from the attic to the basement with a fan pumping the air through it.
> The drawbacks I could see to this system are that there is fiberglass
> dust in the attic, the system would only work in the summer, and the
> air in the attic seemed to smell funny, although it may have just been
> the heat.
>
> Has anyone ever tried to implement such a system?
>

I would be concerned about humidity issues.
Tomes



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