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Combustion Analyzer Recommendations

Hello, I am due for a new combustion analyzer and I am wondering what most guys are using right now. I currently have the E-Instruments Bluetooth version with the built in printer and it works good but I find it kind of heavy and bulky to lug around. I would appreciate any suggestions for a lightweight unit, preferably something that could connect to a phone or iPad. I really only need to measure CO, O2 and CO2. Draft would be nice but not required as I can use my manometer. Thanks!


  • I've had a Testo and now have a Bacharach. Both are excellent.

    Get it along with a printer if you like to leave a log at the jobsite or for your own personal records.
    Often wrong, never in doubt.

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  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 7,307
    TESTO 320 seems popular
  • icy78icy78 Member Posts: 381
    Stack temp data is critical.
    Testo 320 or Bacharach Insight Plus.
    I've had trouble with both but I use them for long stretches at times. Like an hour continuously.
    I think that plays havoc with the Insight but not sure about that.
    (I get moisture in the pump diaphragm which may be user error)
    mikeapolis BoilerToolbox
  • hvacfreak2hvacfreak2 Member Posts: 491
    I just got a PCA 400 with NO at work. All dressed up and nowhere to go is how I feel with this. The first start up I did does not state an acceptable stack temp . It gives the other numbers , which I was able to meet but I have no idea if that is correct ( even with this 3000 dollar machine ).

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • Big Ed_4Big Ed_4 Member Posts: 1,433
    I have enough experience to know , that I dont know it all
  • tim smithtim smith Member Posts: 2,324
    The UEI C155 has been pretty good. We have gone through probably 12 testos, couple Bacharachs. The C155 has 3 yr cell warranty if memory serves me. They all have there pit falls and benefits.
  • SuperTechSuperTech Member Posts: 1,391
    I recently brought a new Testo 300LL.  Its awesome. Its like using an android phone. It can save test results, email them or print them. 5 year warranty.  
    I also have the Testo 320 which has been good to me for years. I've used the Testo 310, it does the job but I don't like the display as much as the 300 and 320.
    Alan (California Radiant) ForbesBoilerToolbox
  • ZmanZman Member Posts: 6,002
    Testo is a nice product. Very few if any analyzers are measuring CO2. It is calculated based on O2
    The must have readings are O2, CO and stack temp.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
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