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  1. #1

    Soot in heat exchanger

    I recently started having problems with the Intertherm furnace in my five year old manufactured home. The main burner would come on for a short length of time and blow out, along with the pilot. To make a long story short, it was found that the heat exchanger was plugged with soot from overfiring. This had been slowly building up for a long time, and ultimately was the result of the original installer putting in the wrong orfice during a natural gas-to-propane conversion. The technician is recommending replacing the furnace, as he claims the heat exchanger cannot easily be cleaned. Does this make sense?

    If I do decide to replace the furnace, I am considering replacing it with a more efficient condensing furnace. Are these furnaces readily available for manufactured homes?

  2. #2
    Join Date
    Jul 2004
    Location
    IN THE CRAWL SPACE
    Posts
    1,536
    Well replacing the furnace is one option or replacing the heat exchanger.Replacing the heat exchanger is a pain it the butt.What happened to to installing contractor?I feel bad for you but I hope the unit is shut down.

    Don't let anyone talk you into having the thing cleaned because the heatexchanger my be cracked.

  3. #3
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    You will never get the thing clean and the soot will return.Replace the heat exchanger
    Karst means cave. So, I search for caves.

  4. #4
    Join Date
    Jul 2000
    Location
    Northern Wisconsin
    Posts
    2,032
    Intertherm makes a condensing furnce that is approved for installation in manufactured homes. So does Bryant.
    Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.

  5. #5
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Yeah soot is a definate telltale. Sorry to say it means the end of your furnace

  6. #6
    Join Date
    Dec 2006
    Location
    Kansas City, Mo
    Posts
    15

    soot

    I would not stop at the heat exchanger, I Would also check the flue piping. When a system starts producing soot, it will travel all the way up the flue, depending on how long it's gone unnoticed. good luck

  7. #7
    Join Date
    Oct 2002
    Location
    Illinois
    Posts
    132
    Just because the furnace sooted up does not mean it is done for. Have a reputable hvac contracator check it out befor you replace anything.

  8. #8
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    18,066
    What?? you mean your not going to tell him how to fix the issue Harry?
    To put the world in order, we must first put the nation in order; to put the nation in order, we must put the family in order; to put the family in order, we must cultivate our personal life; and to cultivate our personal life, we must first set our hearts right.
    -- Confucius

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