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Old 02-19-2014, 05:28 PM   #1
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Help me identify this....


Hello all,

I am preparing to finish my basement and I need some help identifying this insulated vent dangling on my foundation wall. I am assuming it is some sort of fresh air vent but I am not sure, thus the post. Can someone please give me a positive id and what I will need to do with it. Thanks for the help!
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Old 02-19-2014, 06:52 PM   #2
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Help me identify this....


Can't really tell by the pic, does it go out the bottom? What does it supply fresh air to? The way it goes below grade, it almost looks like some sort of fondation drain. Stay tuned, someone here will identify it for you. Thanks.


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Old 02-19-2014, 07:58 PM   #3
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Help me identify this....


Hopefully this pic helps. It starts at top and drops almost to the floor which is about 9ft. It says 4" R-42 on the side. Hope this helps provide more info.
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Old 02-19-2014, 08:28 PM   #4
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Where does it go to at the top? Is it hooked to an outside vent?
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Old 02-19-2014, 08:54 PM   #5
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Could be a make up air vent for your furnace if your house is tight and you have too many appliances expelling air from the house they will put one in could be wrong though. Wait for yuri of beenythere
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Old 02-19-2014, 09:04 PM   #6
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Both the flexible pipes shown are vented outside. The one to the right feeds directly to the return air on the furnace and the one in the center is the one in question and just hangs as in pic 1.
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Old 02-19-2014, 10:38 PM   #7
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Help me identify this....


Dryer vent, radon vent and the blowers missing?
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Old 02-20-2014, 10:14 AM   #8
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where do you live?

the one to the duct is a fresh air pipe to bring in air for getting rid of smells and excess humidity

the other one probably is a combustion air pipe to bring in air for the furnace burner. is your furnace in the same room?
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Old 02-20-2014, 03:01 PM   #9
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Yuri: I live in Michigan. The furnace is in the same room but complete other side of it. I had this house built in 2010 and never questioned what it was but it has been there since I moved in.

Joecaption: I never considered a secondary dryer vent in case I wanted to move the location of my laundry. If this is so, would the builders put this directly next to the fresh air for the furnace? Also, my house has a dedicated radon mitigation system already built in.

I have attached another pic of the inside of the pipe if this helps.
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Old 02-20-2014, 04:56 PM   #10
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Help me identify this....


you would not want to exhaust a dryer next to a furnace intake as it will suck fumes in. usually they try put the comb air pipe near the furnace but if that was the only place they could drill thru the wall then so be it ( or they were lazy). newer homes can be very airtight and where I am the bldg. code required one and your area may be the same. I would try get one installed near the furnace or that whole area will be cold. looks sloppy to me as usually they put a U gooseneck at the bottom of it to try slow down the air. ideally it should be by the furnace.
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Old 02-20-2014, 07:01 PM   #11
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Thanks for that Yuri. So considering I will be building a room specific for the furnace and hot water heater, it sounds like you are recommending I extend the pipe to that room so the furnace can breath better.
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Old 02-20-2014, 10:18 PM   #12
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It MUST be in the furnace room or the furnace burner will be starved for air. If you can drill a new hole in the wall by the furnace that may be better as it is hard for it to suck air thru a long flex pipe which gets kinks in it. Best way to support that flex pipe is to take pieces of poly/vapor barrier and cut 4" wide strips/slings and hang it with them so it does not kink.

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