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  1. #1

    Cracked Heat Exchanger on Lennox Furnace

    We had a technician come out today to diagnose a problem with our furnace and upon inspection he noticed that there was a crack in the heat exchanger and the blower control board needs replacing (the original problem). The furnace (Lennox G26Q3/4) was installed around 1996. According to the tech, the heat exchanger is under lifetime warranty and we would have to pay for the blower control board. We would have to pay for the labor which he said would take a day to do. Does it make sense to replace the heat exchanger or should the whole furnace be replaced. I was also reading in another thread and it was mentioned that carrier gave an allowance if the heat exchanger needed to be replaced. Does Lennox offer something similar? Thanks for the help.

  2. #2
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    apparently math is not my strong suit.
    Last edited by tinner73; 11-10-2011 at 11:06 PM. Reason: misplaced my calculator
    FILL OUT YOUR PROFILE!!

  3. #3
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    Dec 2002
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    Quote Originally Posted by tinner73 View Post
    i'd find out why the heat exchanger cracked in only 6 years.
    excelled a math did you?


    2011-1996=15



    have them check to see if lennox has a program to transfer warranty $ to replacement $
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  4. #4
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    hahahahahahahaha!!!






    my bad read it to fast.
    FILL OUT YOUR PROFILE!!

  5. #5
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    just pokin' you,

    I had too read it 3 times to make sure I hadn't missed something
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  6. #6
    Join Date
    Dec 2007
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    Quote Originally Posted by cisco1 View Post
    We had a technician come out today to diagnose a problem with our furnace and upon inspection he noticed that there was a crack in the heat exchanger and the blower control board needs replacing (the original problem). The furnace (Lennox G26Q3/4) was installed around 1996. According to the tech, the heat exchanger is under lifetime warranty and we would have to pay for the blower control board. We would have to pay for the labor which he said would take a day to do. Does it make sense to replace the heat exchanger or should the whole furnace be replaced. I was also reading in another thread and it was mentioned that carrier gave an allowance if the heat exchanger needed to be replaced. Does Lennox offer something similar? Thanks for the help.
    This is a Pulse furnace, I believe.

    If so, there are minimal to NO parts available.

    Do NOT pay for the repair.

    there is a replacement program that has an incentive towards a new Lennox furnace. Your tech should know this and have the info or the salesperson for the tech will inform you of the details.
    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

  7. #7
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    Bsmith816.

    This is the Ask Our Pro's forum. In order to post advice here, you must have verified qualifications and have been approved by the AOP Committee.

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  8. #8
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    Quote Originally Posted by pacnw View Post
    This is a Pulse furnace, I believe.

    If so, there are minimal to NO parts available.

    Do NOT pay for the repair.

    there is a replacement program that has an incentive towards a new Lennox furnace. Your tech should know this and have the info or the salesperson for the tech will inform you of the details.
    G26 isn't a Pulse.
    Contractor locator map

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  9. #9
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    No labor help from Lennox. So you would have to pay labor, freight and for the board. At 15 years, might be wise to for a new one.

    If you have any reason to doubt him, get a 2nd opinion. Hopefully he is honest but we've got some dealers around here whose techs will tell the customer anything to get a sale.

  10. #10
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    I would agree

    Quote Originally Posted by BaldLoonie View Post
    No labor help from Lennox. So you would have to pay labor, freight and for the board. At 15 years, might be wise to for a new one.

    If you have any reason to doubt him, get a 2nd opinion. Hopefully he is honest but we've got some dealers around here whose techs will tell the customer anything to get a sale.
    with BL by the time you pay for board and labor you are behind the 8 ball, you still have major components on an older system that are stressed.

  11. #11
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    We just had two of those same model furnaces with cracks last week. If it was JUST the heat exchanger, then I'd recommend replacing, but combined with the board, then the total cost would be too high IMO anyway. But very common problem with the Lennox G26 in my experience. But frankly, I'd keep this in mind in determining what brand I'd replace with!! Sadly, nobody tells the customer how many heat exchangers it takes to last a "lifetime".

    P.S. One was a 4 cell (100k) and all four cells were cracked, the other was a 3 cell (75K) and had only one cracked (now anyway).

  12. #12
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    Quote Originally Posted by wahoo View Post
    We just had two of those same model furnaces with cracks last week. If it was JUST the heat exchanger, then I'd recommend replacing, but combined with the board, then the total cost would be too high IMO anyway. But very common problem with the Lennox G26 in my experience. But frankly, I'd keep this in mind in determining what brand I'd replace with!! Sadly, nobody tells the customer how many heat exchangers it takes to last a "lifetime".

    Or the correct size with propper airflow and gas pressure to make it last.

  13. #13
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    Both of these G26 units had been on our pre-paid Maint. plan since installed. So they had been taken care of. We've had numerous other G26 units do same thing.

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