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07-26-2007, 04:41 PM
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Join Date: Mar 2007
Location: gone
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Rust inside 2004 furnace
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Last edited by Jeff Eastman : 12-20-2007 at 07:04 AM.
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07-26-2007, 04:50 PM
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Join Date: Mar 2007
Location: Houston, Texas
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Re: Rust inside 2004 furnace
Originally Posted by Jeff Eastman
Ideas on what is causing the rust inside of this furnace?
Moisture?  |
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07-26-2007, 04:51 PM
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Join Date: Mar 2007
Location: Spring Hill (Nashville), TN
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Re: Rust inside 2004 furnace
Moisture!
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07-26-2007, 04:52 PM
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Re: Rust inside 2004 furnace
Well it looks like Phillip and I are on the same page!  |
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07-26-2007, 04:52 PM
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Re: Rust inside 2004 furnace
Originally Posted by Scott Patterson
Moisture!
Great minds think alike eh Scott? |
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07-26-2007, 05:06 PM
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Join Date: May 2007
Location: Frankfort, KY
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Re: Rust inside 2004 furnace
Was that the only spot in the furnace showing any signs of rust?
__________________
Measured Performance more than just a buzzword
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07-26-2007, 05:14 PM
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Join Date: Mar 2007
Location: Duncanville, Tx
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Re: Rust inside 2004 furnace
My first thoughts are, two:
1) There obviously could be moisture running down the flue.
2) The moisture could be created by a short purge-cycle that doesen't allow for the hot combustion fumes to exit out thru the roof. The result would be the cold air in the attic would cause condensation to form on the outside and drip back down.
Or, there could have been a circus in town that had a monkey escape. The monkey climbed the roof and urinated down the chimney... 
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"If con is the opposite of pro, is Congress the opposite of progress?"
Richard Rushing, HCRI
Duncanville, Tx.
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07-26-2007, 05:21 PM
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Join Date: Mar 2007
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Re: Rust inside 2004 furnace
I would vote on condensation down the flue pipe. But this is only a guess. This is one of the camels that folks strain on but watch out for the gnats they will choke you!
This would not even make my report.
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07-26-2007, 05:57 PM
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Join Date: Mar 2007
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Re: Rust inside 2004 furnace
I agree, condensation between cycles.
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07-27-2007, 03:06 PM
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Re: Rust inside 2004 furnace
Originally Posted by Scott Patterson
I would vote on condensation down the flue pipe. But this is only a guess. This is one of the camels that folks strain on but watch out for the gnats they will choke you!
This would not even make my report.
Scott if you run up on this it needs to make a report if it's from the flue gases as it is a defect, flues are not meant to condense on the inside unless it's a condensing furnace.
There are ways to fix these condensation issues that require the addition of a post purge circuit.
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Measured Performance more than just a buzzword
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07-27-2007, 04:31 PM
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Re: Rust inside 2004 furnace
Originally Posted by DavidR
Scott if you run up on this it needs to make a report if it's from the flue gases as it is a defect, flues are not meant to condense on the inside unless it's a condensing furnace.
There are ways to fix these condensation issues that require the addition of a post purge circuit.
Could be, but this IMO is way outside the scope of a home inspectors job. Now, if you have an HVAC background and you see this as a problem you will not agree with my philosophy. Chances are that the small amount of rust stains were just one of several other signs that one could see if we had an entire picture of the flue pipe, etc.
Based on that picture, I do not see it as a problem and truth be known I don't know if I would have even seen it unless there were some other signs. |
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