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  1. #1
    Join Date
    Aug 2000
    Location
    Sandusky Ohio
    Posts
    290

    you MUST pull the coil out and look!

    Name:  20120914_110236.jpg
Views: 1833
Size:  48.8 KBRan into this several times. Furnaces that use this method may have small little leaks in the exchangers. This 8 year old furnace has 32 leaks, notice the little straw I placed into the hole. Man didn't want it fixed but wanted it OUT of his home! Smart move. Major brand that's relabeled and sold to lumber yard for DIY.

  2. #2
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,915
    Pulling the coil is no easy task on the vast majority of systems in my area, so it isn't a task undertaken lightly.
    When one is like that, it becomes glaringly obvious there is a problem about 3 seconds after the blower turns on, because the O2 and CO readings go wild on my combustion analyzer.
    If more government is the answer, then it's a really stupid question.

  3. #3
    Join Date
    Jun 2003
    Location
    Chicago, IL
    Posts
    4,484
    What brand is it? Im assuming Rheem, Nordyne, or Goodman based on the tubular exchanger.

    Theres no need to hide brand names. By listing the name, you're helping others locate and correct potentially dangerous situations.

  4. #4
    Join Date
    Aug 2000
    Location
    Sandusky Ohio
    Posts
    290
    Monarch, I think its a York re label.

  5. #5
    Join Date
    Jun 2007
    Location
    Greenwood Indiana (Indianapolis)
    Posts
    420
    Quote Originally Posted by craig1 View Post
    What brand is it? Im assuming Rheem, Nordyne, or Goodman based on the tubular exchanger.

    Theres no need to hide brand names. By listing the name, you're helping others locate and correct potentially dangerous situations.
    Looks like an Amana to me.
    As iron sharpens iron so one man sharpens another Proverbs 27:17 NIV84

  6. #6
    Join Date
    Aug 2000
    Location
    Sandusky Ohio
    Posts
    290
    I think i have a picture of the units label on my phone, I will check to see and report back.

  7. #7
    Join Date
    Aug 2012
    Location
    NE wisconsin
    Posts
    403
    Quote Originally Posted by mark beiser View Post
    Pulling the coil is no easy task on the vast majority of systems in my area, so it isn't a task undertaken lightly.
    When one is like that, it becomes glaringly obvious there is a problem about 3 seconds after the blower turns on, because the O2 and CO readings go wild on my combustion analyzer.
    Even with pulling the coil those small holes can be easy to miss, every one of those style hx with the holes on the ripples like that has given me high co readings on the analyzer.

  8. #8
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,404
    Quote Originally Posted by mark beiser View Post
    Pulling the coil is no easy task on the vast majority of systems in my area, so it isn't a task undertaken lightly.
    When one is like that, it becomes glaringly obvious there is a problem about 3 seconds after the blower turns on, because the O2 and CO readings go wild on my combustion analyzer.
    Quote Originally Posted by philjafo View Post
    Even with pulling the coil those small holes can be easy to miss, every one of those style hx with the holes on the ripples like that has given me high co readings on the analyzer.
    This was the reason I bought a combustion analyzer... easier to run a combustion test than do a visual inspection... If the numbers say leak... then pull it apart and find it. Pictures tend to help HO's understand...

    When I took the NCI class for CA, there was a lot more to learn. Well worth the investment IMO.
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  9. #9
    Join Date
    Jul 2012
    Location
    Cincinnati ohio
    Posts
    252
    Quote Originally Posted by ga-hvac-tech View Post
    This was the reason I bought a combustion analyzer... easier to run a combustion test than do a visual inspection... If the numbers say leak... then pull it apart and find it. Pictures tend to help HO's understand... .
    What about the ones that are cracked but do not have high co in the flue? Do you not inspect them all? The last 4 gas furnaces I have performed tune ups on had cracked heat exchangers and only one of them had high co.

  10. #10
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,404
    Quote Originally Posted by 2141 View Post
    What about the ones that are cracked but do not have high co in the flue? Do you not inspect them all? The last 4 gas furnaces I have performed tune ups on had cracked heat exchangers and only one of them had high co.
    More ways than high CO to see a compromised HXE with a CA unit... If one chooses to get into CA, they need to budget for the training also. I thought I could figure it out... not so; one needs the training to understand.
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  11. #11
    Join Date
    Jul 2012
    Location
    Cincinnati ohio
    Posts
    252
    Quote Originally Posted by ga-hvac-tech View Post
    More ways than high CO to see a compromised HXE with a CA unit... If one chooses to get into CA, they need to budget for the training also. I thought I could figure it out... not so; one needs the training to understand.
    I'll be honest with you I am not familiar with CA at all and thats why i asked. I use a UEI co91 and check the flue co and I check every heat exchanger with a camera because that is what I know. I want to get better so I am actually considering buying the eagle analyzer but I am afraid to spend that much money and not really get the full use out of it. We had a uei rep come in a few months after I got into this business and give a class but I was so green that I really had no clue what they were talking about. Now that I understand things a little better, buying on has been on my mind. Do you think it is necessary to invest in this tool and training?

  12. #12
    Join Date
    Jun 2011
    Location
    Houston area
    Posts
    1,493
    Quote Originally Posted by 2141 View Post
    .......Do you think it is necessary to invest in this tool and training?
    It's highly advisable if you work on ANYTHING that uses a combustible gas. Plus, it'll give you a leg up on your competitors.

    Kudos to you for your forward thinking.
    The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....

    `. .` .>(((>

    `... `. .` .>(((>

    .` .>(((>

    LMAOSHMSFOAIDMT

  13. #13
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,404
    I use a Testo 327... and received my training from NCI. The class was 3 days and a bit under $1K investment... WELL worth it!

    IMO if one is gonna buy a CA unit... budget for training also.
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

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