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  1. #1
    Jeff Eastman's Avatar
    Jeff Eastman Guest

  2. #2
    Join Date
    Mar 2007
    Location
    Houston, Texas
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    292

    Default Re: Rust inside 2004 furnace

    Quote Originally Posted by Jeff Eastman View Post
    Ideas on what is causing the rust inside of this furnace?
    Moisture?


  3. #3
    Join Date
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    Spring Hill (Nashville), TN
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    Default Re: Rust inside 2004 furnace

    Moisture!

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  4. #4
    Join Date
    Mar 2007
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    Spring Hill (Nashville), TN
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    Default Re: Rust inside 2004 furnace

    Well it looks like Phillip and I are on the same page!

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  5. #5
    Join Date
    Mar 2007
    Location
    Houston, Texas
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    292

    Default Re: Rust inside 2004 furnace

    Quote Originally Posted by Scott Patterson View Post
    Moisture!

    Great minds think alike eh Scott?


  6. #6
    Join Date
    May 2007
    Location
    Frankfort, KY
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    326

    Default 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

  7. #7
    Richard Rushing's Avatar
    Richard Rushing Guest

    Default 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...


  8. #8
    Join Date
    Mar 2007
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    Spring Hill (Nashville), TN
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    Default 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.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  9. #9
    Join Date
    Mar 2007
    Location
    Connecticut
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    Default Re: Rust inside 2004 furnace

    I agree, condensation between cycles.


  10. #10
    Join Date
    May 2007
    Location
    Frankfort, KY
    Posts
    326

    Default Re: Rust inside 2004 furnace

    Quote Originally Posted by Scott Patterson View Post
    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.

    Measured Performance more than just a buzzword

  11. #11
    Join Date
    Mar 2007
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    Spring Hill (Nashville), TN
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    Default Re: Rust inside 2004 furnace

    Quote Originally Posted by DavidR View Post
    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.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

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