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  1. #1
    Jon mackay's Avatar
    Jon mackay Guest

    Default Gas furnace venting

    This furnace is an old Sears unit and is not vented correctly but I was curious about the white color above the 2nd burner and at the 2nd exhaust area below the vent hood. Is this an indication that something may be wrong in the heat exchanger or just from poor venting?

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  2. #2
    David Bell's Avatar
    David Bell Guest

    Default Re: Gas furnace venting

    Wow, its hard to believe ther have been no asphyxiations in this home. As for the white "Hot Spot" above the second burner, that is usually a sign of a heat exchanger hole, or a clogged burner tube. That unit should be tagged as unsafe and reported.


  3. #3
    Jon mackay's Avatar
    Jon mackay Guest

    Default Re: Gas furnace venting

    OK, thank you for the info.
    I know that the system is in bad shape and should be replaced.

    It is always interesting to catch various symptoms like this. I was thinking that it may have been due to the pilot light being installed at the 2nd burner.

    Thank you again


  4. #4
    Scott Craig's Avatar
    Scott Craig Guest

    Default Re: Gas furnace venting

    Quote Originally Posted by David Bell View Post
    Wow, its hard to believe ther have been no asphyxiations in this home. As for the white "Hot Spot" above the second burner, that is usually a sign of a heat exchanger hole, or a clogged burner tube. That unit should be tagged as unsafe and reported.
    Yep! This unit has definitely see better days! Looks unsafe for sure.


  5. #5
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Gas furnace venting

    Quote Originally Posted by Jon mackay View Post
    OK, thank you for the info.
    I know that the system is in bad shape and should be replaced.

    It is always interesting to catch various symptoms like this. I was thinking that it may have been due to the pilot light being installed at the 2nd burner.

    Thank you again
    You are correct, the rust is kept at bay by the standing pilot discouraging condensation and rust during the off cycle.
    Might be other issues but in and of itself, the difference is not an issue.
    The good news is you won't see many of this antiques with a standing pilot.
    Replace it anyway!

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

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