Results 1 to 12 of 12
  1. #1
    Join Date
    Jun 2009
    Location
    northern Ohio
    Posts
    167

    favorite/preffered leak checking method

    Being that I don't yet have enough posts to become a professional member I will post this here. I work at the family shop, fifth generation, and I'm only 32. My point is is that I learned most everything from my Dad on the jobsites a lot more than when I went to tradeschool for HVAC. They were old school and mostly leak checked with nitrogen. I use nitrogen to leak check also sometimes, a new Baccharach sniffer that works well sometimes, and I recently started using the UV dyes as I had a job that I still have yet to find the leak on. In a earlier thread a member claimed to have never had a leak that he did not find in less than 30 minutes! WOW! Unbelievable! I would hire him in a heartbeat just for that purpose alone! Anyways what are your favorite or most preferred leak detection methods? What have you found to be most reliable in the field? Dyes? Pressure and bubbles? Sniffers? Having a 30 minute leak finding man? I would like your feedback. I suppose most of the answers will probably be a combination of all these methods. I read in a thread someone saying they found a leak "ultrasonically". What does that mean? The only thing I have going on around here thats "ultra sonic" is my toothbrush

  2. #2
    Join Date
    Jan 2011
    Location
    TN
    Posts
    93
    An ultrasonic works off the sound of a leak (same principle as a dog whistle) the detector can hear it even though you cant.You will have to bump the pressure up to get these to work well most of the time.They will pick up leaks on any kind of vapor leaking air,etc.

  3. #3
    Join Date
    Jul 2008
    Location
    Denver, CO
    Posts
    4,229
    450 psi N2 with a trace of 22, leak detector and soap bubbles, your guaranteed to find the leak running that much pressure.

  4. #4
    Join Date
    May 2000
    Location
    Rochester, NY, USA
    Posts
    14,358
    Quote Originally Posted by Tiger93rsl View Post
    450 psi N2 with a trace of 22, leak detector and soap bubbles, your guaranteed to find the leak running that much pressure.
    yep, High pressure Nitrogen and a smidgen of R-22 and bubbles, ya can't miss with that combo
    LOVE has four letters

    So does BEER, DEER,GUNS AND FISH

  5. #5
    Join Date
    Oct 2010
    Location
    SW Michigan, near Battle Creek
    Posts
    921
    well if the leak is in the lineset over a finished ceiling....
    found that one with UV dye (it crawled under the armaflex to the condencer and the evaporator.

    My leak check in general
    1 look for oil
    2 bubbles
    3 new shrader cores and caps (often this makes the leak go away but I guess I didnt really "find" it)
    3a offer a squirt of dye "..if it leaks again it will help find the problem"

    I find the dye realy good for leaky evaporators.

  6. #6
    Join Date
    Jan 2006
    Posts
    140
    I've tried all methods and bought the most expensive leak detectors and have clearly learned that each method will probably find the leak, NITROGEN WILL ALWAYS FIND A LEAK. I have a bacharac h10 detector that works very well if you can't take the system down in situations like mission critical stuff or supermarket systems. It works by detecting halogen, which all refrigerants consist of and its never failed me yet.
    The only decision in life is to decide what to do with the time given to you

  7. #7
    Join Date
    May 2010
    Posts
    1,295
    Nitrogen, Inficon D-Tek Select, R-22, and Big Blue. All you'll ever need

  8. #8
    Join Date
    Oct 2010
    Location
    SW Michigan, near Battle Creek
    Posts
    921
    recover, fill with nitrogen, leakcheck, evacuate, charge. that comes to a pretty hefty bill. you must only do that when simple methods have failed. I do not see how it will find a leak in a wallspace or over a finish ceiling.

  9. #9
    Join Date
    Jul 2008
    Location
    Denver, CO
    Posts
    4,229
    Quote Originally Posted by HighTekk^ View Post
    I've tried all methods and bought the most expensive leak detectors and have clearly learned that each method will probably find the leak, NITROGEN WILL ALWAYS FIND A LEAK. I have a bacharac h10 detector that works very well if you can't take the system down in situations like mission critical stuff or supermarket systems. It works by detecting halogen, which all refrigerants consist of and its never failed me yet.
    The H-10 is by far the most superrior sniffer out there. I have used many different types of sniffers including the d-tek, and none come close to the quality of the H-10.

  10. #10
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,758
    Quote Originally Posted by Tiger93rsl View Post
    The H-10 is by far the most superrior sniffer out there. I have used many different types of sniffers including the d-tek, and none come close to the quality of the H-10.
    Yep.

    I've leak searched miles of piping with an H-10 and found many, many leaks with it.

    On small equipment, pressurizing with nitrogen is nice, but with good techniques, nitrogen is not really necessary.

  11. #11
    Join Date
    Aug 2010
    Location
    Memphis
    Posts
    343
    Quote Originally Posted by ZeroTolerance View Post
    Nitrogen, Inficon D-Tek Select, R-22, and Big Blue. All you'll ever need
    Ditto!

  12. #12
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,758
    Quote Originally Posted by ZeroTolerance View Post
    Nitrogen, Inficon D-Tek Select, R-22, and Big Blue. All you'll ever need
    I have had issues in the past with the Dtek Select.

    If you get a newer model, they are a great detector.

    The older ones are too big to be paperweights and too light to be boat anchors. I haven't figures out what to do with it, but it isn't worth a crap for finding leaks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event