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Posted by Bill on April 15, 2007, 6:19 pm
I noticed quite a large opening (8" x 8") in the cold air return going into
my furnace in my basement.
It's been missing a while, and it's in a ackward spot to fix.
What is the prblems associated with this hole, and what improvements will I
gain by spending the time to fix it (seal the opening)?
Thanks
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Posted by Charles Schuler on April 15, 2007, 6:23 pm
>I noticed quite a large opening (8" x 8") in the cold air return going into
>my furnace in my basement.
>
> It's been missing a while, and it's in a ackward spot to fix.
>
> What is the prblems associated with this hole, and what improvements will
> I gain by spending the time to fix it (seal the opening)?
Is your basement heated by forced air? If not, I'd close that rascal.
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Posted by on April 15, 2007, 6:42 pm
wrote:
>
>
> >I noticed quite a large opening (8" x 8") in the cold air return going into
> >my furnace in my basement.
>
> > It's been missing a while, and it's in a ackward spot to fix.
>
> > What is the prblems associated with this hole, and what improvements will
> > I gain by spending the time to fix it (seal the opening)?
>
> Is your basement heated by forced air? If not, I'd close that rascal.
It depends on alot of things, I leave mine open in winter to get it a
bit warmer and keep the air circulating and in summer close it for AC
to pull the most from the second floor return. It depends on duct
sizing, moisture issues, if you heat the basement or not..
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Posted by mm on April 15, 2007, 8:57 pm
>I noticed quite a large opening (8" x 8") in the cold air return going into
>my furnace in my basement.
>
>It's been missing a while, and it's in a ackward spot to fix.
>
>What is the prblems associated with this hole, and what improvements will I
>gain by spending the time to fix it (seal the opening)?
>
>Thanks
>
IIUC, the air in the house, the heated air that has cooled off by
being in the rooms for a while, making contact with the cold windows,
being diluted by cold air from leaks, etc, Is pushed out of the room
my the hot air being blown into it, and is pulled out of the room by
the suction of the cold air return.
ISTM a hole like yours substantially lowers the suction. Thus it cuts
down on the circulation in the room and on the efficiency of the hot
air fan. I wonder if, even though now there is more than ever cold
air in the return, the longer more convuluted path that might arise
for air return might also cut down on the circulation. Or maybe that
would be counting the same thing twice.
You don't have to fix it right, with sheet metal and whatever. If it
is not a flammable area, a piece of carboard and duct tape, or even
duck tape, would probably last for 10 years. Then you can do it again
for another 10 years.
>
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Posted by on April 16, 2007, 6:23 am
> I noticed quite a large opening (8" x 8") in the cold air return going into
> my furnace in my basement.
>
> It's been missing a while, and it's in a ackward spot to fix.
>
> What is the prblems associated with this hole, and what improvements will I
> gain by spending the time to fix it (seal the opening)?
>
> Thanks
I would definitely close it. It reduces your system efficiency, has
potential
of sucking in carbon monoxide, and other NG bi-products
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