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Forum: Tech to Tech Chat - Commercial

FOR TECHNICAL CHAT BETWEEN INDUSTRY WORKERS ONLY. NO AOP OR DIY** This forum is for Technical Chat in the Commercial Industry and only within the limits of the Open area Rules concerning DIY. Any technical chat that goes too far will be removed or moved to the Pro Area.

  1. Sticky Thread Sticky Threads

  2. Sticky Thread NO AOP or Homeowner posts here please. ONLY Tech to Tech chatter

    Started by Dad, 08-10-2011 04:34 PM
    • Replies: 0
    • Views: 42,919
    Dad
    08-10-2011, 04:34 PM Go to last post

  1. Normal Thread Normal Threads

  2. cooling a small server room

    Started by serverroomcooling, 11-16-2004 11:04 AM
    64 Pages •
    1 2 3 4 5 6 ... 64
    • Replies: 1,275
    • Views: 223,291
    30GTN150
    07-28-2013, 09:10 AM Go to last post

  3. CARRIER MODEL AND SERIAL NUMBER, HOW TO TELL DATE AND SIZE

    Started by REEKERS529, 08-11-2014 11:18 AM
    • Replies: 14
    • Views: 157,222
    Cool breeze 38
    02-18-2023, 06:35 PM Go to last post

  4. How much refrigerant can a recovery tank hold?

    Started by bgrich2003, 07-30-2012 10:28 AM
    • Replies: 11
    • Views: 90,690
    texasgentleman2
    08-01-2012, 08:26 AM Go to last post

  5. ISCEON® MO99™ refrigerant ( R-438a )

    Started by freonguy, 08-18-2009 05:15 PM
    3 Pages •
    1 2 3
    mo99, r22 2 Attachment(s)
    • Replies: 53
    • Views: 83,938
    Pete954
    09-20-2012, 11:16 AM Go to last post

  6. The definitive rules of micron gauge readings and interpretations here:

    Started by Tool-Slinger, 07-13-2014 07:15 PM
    10 Pages •
    1 2 3 4 5 6 ... 10
    8 Attachment(s)
    • Replies: 187
    • Views: 69,009
    R600a
    06-13-2021, 04:30 PM Go to last post

  7. R410A Normal Head pressure 100 degree Ambient temp?

    Started by Junior1983, 07-04-2015 02:23 PM
    • Replies: 13
    • Views: 69,000
    lions_lair
    07-08-2015, 08:11 AM Go to last post

  8. EXV problems on Carrier 30GT Chiller

    Started by hvac-alan, 09-02-2005 07:23 PM
    5 Pages •
    1 2 3 4 5
    1 Attachment(s)
    • Replies: 91
    • Views: 64,369
    Greg LaMar
    08-08-2013, 06:59 PM Go to last post

  9. Anyone doing Family Dollar or Dollar General service?

    Started by MechTech2013, 06-06-2014 02:04 AM
    10 Pages •
    1 2 3 4 5 6 ... 10
    4 Attachment(s)
    • Replies: 186
    • Views: 62,558
    MechTech2013
    11-18-2015, 11:10 PM Go to last post

  10. Oil foaming in Compressor sight glass

    Started by elvis66, 08-16-2011 11:57 AM
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 32
    • Views: 62,040
    bunny
    12-06-2011, 10:06 PM Go to last post

  11. York RTU heating Ignition control failure during AC, unit locks out??

    Started by tcape, 07-22-2016 03:52 PM
    5 Pages •
    1 2 3 4 5
    • Replies: 90
    • Views: 59,575
    Gary Warren Jr
    01-29-2023, 05:44 PM Go to last post

  12. Best Recovery Machines

    Started by softtail, 01-01-2007 01:00 PM
    3 Pages •
    1 2 3
    • Replies: 47
    • Views: 59,509
    JonesHVAC
    06-20-2017, 10:17 AM Go to last post

  13. r-22 with poe oil

    Started by anthonyac1, 03-12-2012 09:48 PM
    3 Pages •
    1 2 3
    • Replies: 44
    • Views: 56,866
    David Goodman
    06-27-2016, 08:13 PM Go to last post

  14. Water source heat pump high head pressure

    Started by PolarBearAir, 09-16-2011 09:57 PM
    2 Pages •
    1 2
    • Replies: 20
    • Views: 56,393
    dlove
    11-01-2014, 09:13 AM Go to last post

  15. Bypassing Hi/Low pressure cut offs

    Started by hurtinhvac, 03-17-2012 02:19 PM
    2 Pages •
    1 2
    • Replies: 29
    • Views: 51,597
    haig1
    03-20-2018, 07:59 PM Go to last post

  16. High suction pressure low to normal head?

    Started by Gonzo2611, 08-28-2012 10:13 PM
    2 Pages •
    1 2
    • Replies: 34
    • Views: 49,853
    socotech
    09-16-2012, 03:00 AM Go to last post

  17. Loss of flow alarms on new trane chiller!?!?

    Started by Wes G., 08-23-2012 11:23 PM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 49
    • Views: 49,652
    71CHOPS
    03-01-2017, 06:38 AM Go to last post

  18. Dolphin chemical free water treatment

    Started by colorado dave, 02-22-2005 06:38 PM
    4 Pages •
    1 2 3 4
    • Replies: 72
    • Views: 47,825
    alexhales23
    04-12-2021, 07:06 AM Go to last post

  19. Carrier will lay off 2100 peaple

    Started by servicefitter, 02-11-2016 09:18 PM
    14 Pages •
    1 2 3 4 5 6 ... 14
    3 Attachment(s)
    • Replies: 260
    • Views: 46,766
    Poodle Head Mikey
    07-24-2016, 08:11 PM Go to last post

  20. Reusing reclaimed refrigerant

    Started by ColoradoTechJoe, 06-17-2016 10:44 PM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 42
    • Views: 45,638
    BBeerme
    01-01-2022, 09:34 PM Go to last post

  21. converting MBH to CFH

    Started by toolsrules, 05-18-2016 07:51 PM
    • Replies: 3
    • Views: 45,164
    heatingman
    05-19-2016, 01:29 PM Go to last post

  22. Understanding Unloading

    Started by DDCSD, 06-15-2016 01:36 AM
    2 Pages •
    1 2
    • Replies: 28
    • Views: 44,625
    huangkebin
    08-07-2019, 10:16 AM Go to last post

  23. 3 phase ac compressor

    Started by biggi, 04-16-2013 08:34 PM
    2 Pages •
    1 2
    • Replies: 39
    • Views: 44,472
    Hrdworkingacguy
    04-21-2017, 04:05 PM Go to last post

  24. CO2 Purge for brazing?

    Started by dprimrose, 08-18-2009 10:19 PM
    6 Pages •
    1 2 3 4 5 6
    • Replies: 109
    • Views: 44,101
    AllPro Mech
    10-20-2014, 06:02 PM Go to last post

  25. Using 1/3 hp instead of 1/4 hp any problem?

    Started by DeltaTech, 08-31-2015 11:23 AM
    2 Attachment(s)
    • Replies: 14
    • Views: 43,140
    BVdog
    07-20-2021, 11:51 PM Go to last post

  26. Vacuum below 500 microns

    Started by Hvac2014, 06-09-2014 09:14 AM
    2 Pages •
    1 2
    • Replies: 38
    • Views: 42,583
    hvacker
    04-30-2020, 05:07 PM Go to last post

  27. what is class 1 air duct?

    Started by timjimbob, 08-21-2014 06:50 AM
    • Replies: 12
    • Views: 42,196
    timjimbob
    08-22-2014, 07:02 AM Go to last post

  28. evacuating in cold weather

    Started by northeastbeast, 11-06-2013 08:04 PM
    5 Pages •
    1 2 3 4 5
    9 Attachment(s)
    • Replies: 88
    • Views: 41,969
    71CHOPS
    03-02-2021, 12:49 PM Go to last post

  29. face velocity formula

    Started by oldtimer2, 08-23-2010 04:54 PM
    1 Attachment(s)
    • Replies: 17
    • Views: 41,334
    aurochs
    05-20-2014, 01:39 AM Go to last post

  30. L1 and L2!!

    Started by eye in the sky, 11-27-2011 11:51 PM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 49
    • Views: 41,030
    timebuilder
    02-24-2017, 12:44 PM Go to last post

  31. The Double Flare

    Started by BBeerme, 04-21-2016 09:22 PM
    5 Pages •
    1 2 3 4 5
    16 Attachment(s)
    • Replies: 87
    • Views: 40,119
    BBeerme
    03-06-2021, 02:44 PM Go to last post

  32. liebert rep

    Started by energy mech, 02-11-2014 03:27 PM
    4 Pages •
    1 2 3 4
    • Replies: 61
    • Views: 39,501
    Jayrok34
    03-26-2014, 09:01 PM Go to last post

  33. refrigerant restriction

    Started by johnnyb, 05-03-2014 10:37 AM
    13 Pages •
    1 2 3 4 5 6 ... 13
    • Replies: 240
    • Views: 39,445
    ICanHas
    08-02-2014, 09:11 PM Go to last post

  34. Can we use 2 legs of three phase power for a heat pump?

    Started by Adamatim1, 01-21-2017 05:30 PM
    5 Pages •
    1 2 3 4 5
    heat pump 1 Attachment(s)
    • Replies: 82
    • Views: 39,294
    DeltaT
    01-31-2017, 11:12 PM Go to last post

  35. TRANE Mini split (Error code 6) Help!

    Started by Junior1983, 07-04-2015 12:26 AM
    • Replies: 5
    • Views: 38,974
    PRIME85
    07-06-2015, 11:13 PM Go to last post

  36. Skymark Skypak's

    Started by cmajerus, 09-25-2013 01:09 PM
    3 Pages •
    1 2 3
    • Replies: 43
    • Views: 38,002
    pecmsg
    08-19-2023, 08:35 AM Go to last post

  37. Diagnosing a Weak Compressor

    Started by BBeerme, 06-08-2014 08:00 PM
    6 Pages •
    1 2 3 4 5 6
    4 Attachment(s)
    • Replies: 104
    • Views: 37,760
    icemeister
    07-14-2015, 09:28 AM Go to last post

  38. Condensate dripping off coil....

    Started by thirdcoast361, 09-04-2014 08:36 PM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 51
    • Views: 37,637
    bornjanuary25
    07-31-2021, 03:13 AM Go to last post

  39. Flame sensor testing

    Started by btglow2894, 11-15-2014 02:19 PM
    5 Pages •
    1 2 3 4 5
    • Replies: 81
    • Views: 36,752
    Premi
    01-07-2020, 08:25 PM Go to last post

  40. Riddle Me This . . . 22/410A

    Started by BBeerme, 03-21-2017 07:19 PM
    10 Pages •
    1 2 3 4 5 6 ... 10
    1 Attachment(s)
    • Replies: 184
    • Views: 36,549
    BBeerme
    09-08-2023, 10:04 AM Go to last post

  41. R290 VS R22

    Started by Mohammed Nofal, 03-30-2013 08:59 AM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 40
    • Views: 35,726
    itsiceman
    05-02-2023, 02:51 PM Go to last post
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