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Old 02-10-2009, 02:57 PM   #1
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Trade: Metal Framing, Sheetrocking, Taping
 
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Cracked Heat Exchanger
I have been seeing a black residue around the registers in my house. Does this mean that I have a cracked heat exchanger? Can it mean anything else?

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Old 02-10-2009, 08:49 PM   #2
manager
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Its hard to say you should get your HVAC GUY in to look at the furnace. If you burn candals it can be from that.
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Old 02-10-2009, 09:35 PM   #3
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Funny, just two weeks ago I checked on one of our Managed Properties we just remodeled and saw the black soot around the registers. Sure enough, Cracked Heat Exchanger!

We had a new furnace installed within two days.

I went back a week later and found...OIL! Leaking out of the unit. House smelled horrible

Brand New Unit had a cracked pump. I personally think it was cracked during install.

Now we are all good
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Old 02-10-2009, 10:39 PM   #4
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black soot deposition
It could be black soot deposition. Fireplaces, candles, cooking... they are all burning carbon. When this floats around in the air it will collect on surfaces of different temperatures at different rates. I can't remember if it is attracted to warm or cold surfaces.

Then again... check the heat exchanger just to be safe.
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Old 02-11-2009, 10:20 AM   #5
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It could be some leaky duct work as well.
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Old 02-11-2009, 09:17 PM   #6
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Well might be a long shot, but to be possitive. Dirty filters or ducts? He said black residue not soot. Then again it might be soot, if that the case then I'll agree with posts above.
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Old 02-17-2009, 03:31 PM   #7
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Thank you for the help. I appreciate the feedback!!
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