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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 posts here please. ONLY Tech to Tech chatter

    Started by Dad, 08-10-2011 04:34 PM
    • Replies: 0
    • Views: 5,820
    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 12:04 PM
    99 Pages
    1 2 3 4 5 6 ... 99
    • Replies: 1,275
    • Views: 134,592
    07-28-2013, 09:10 AM Go to last post
  3. refrigerant restriction

    Started by johnnyb, 05-03-2014 10:37 AM
    19 Pages
    1 2 3 4 5 6 ... 19
    • Replies: 240
    • Views: 11,930
    08-02-2014, 09:11 PM Go to last post
    • Replies: 176
    • Views: 8,682
    07-25-2014, 04:26 PM Go to last post
  4. on call

    Started by northeastbeast, 08-02-2013 07:03 AM
    11 Pages
    1 2 3 4 5 6 ... 11
    • Replies: 134
    • Views: 14,442
    09-15-2013, 10:56 AM Go to last post
  5. Confused I NEED SOME HELP YCD180 gas fired LOW HEAT ON A CHURCH

    Started by pandatimer, 11-21-2014 06:50 PM
    10 Pages
    1 2 3 4 5 6 ... 10
    • Replies: 119
    • Views: 5,501
    11-30-2014, 03:46 AM Go to last post
  6. 3 phase question

    Started by YatYas, 01-08-2015 07:18 PM
    10 Pages
    1 2 3 4 5 6 ... 10
    • Replies: 117
    • Views: 5,011
    01-15-2015, 04:45 PM Go to last post
  7. CO2 Purge for brazing?

    Started by dprimrose, 08-18-2009 10:19 PM
    9 Pages
    1 2 3 4 5 6 ... 9
    • Replies: 109
    • Views: 14,907
    10-20-2014, 06:02 PM Go to last post
    • Replies: 106
    • Views: 10,364
    01-29-2013, 08:00 PM Go to last post
  8. Confused Commercial technician, thinking about switching to residential.

    Started by comoutsid322, 04-22-2013 11:43 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 101
    • Views: 9,805
    09-28-2013, 02:17 PM Go to last post
  9. Carlyle compressor

    Started by Chris1570, 08-22-2013 08:03 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 97
    • Views: 9,870
    05-11-2014, 03:23 PM Go to last post
  10. Plant operator??

    Started by newtradesman, 10-21-2004 04:59 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 96
    • Views: 9,789
    01-21-2013, 06:50 PM Go to last post
    • Replies: 96
    • Views: 8,877
    02-04-2013, 12:14 PM Go to last post
  11. Anyone doing Family Dollar or Dollar General service?

    Started by MechTech2013, 06-06-2014 02:04 AM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 94
    • Views: 9,852
    01-20-2015, 10:24 AM Go to last post
  12. EXV problems on Carrier 30GT Chiller

    Started by hvac-alan, 09-02-2005 07:23 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 91
    • Views: 34,817
    08-08-2013, 06:59 PM Go to last post
  13. A Fun Question . . .

    Started by BBeerme, 06-27-2014 10:01 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 90
    • Views: 4,695
    07-04-2014, 01:38 AM Go to last post
  14. So, would you fire me?

    Started by Turnertech41, 03-10-2015 05:23 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 89
    • Views: 6,226
    04-14-2015, 10:59 AM Go to last post
  15. Brazing with refrigerant in pipe

    Started by HuNGRYTeCH, 05-22-2012 03:15 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 86
    • Views: 11,604
    06-21-2012, 10:06 PM Go to last post
  16. VRF

    Started by acman17, 05-19-2014 08:20 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 86
    • Views: 8,890
    07-09-2014, 06:20 PM Go to last post
  17. Trane compressor not coming on

    Started by bwd111, 08-15-2014 02:51 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 84
    • Views: 5,170
    08-29-2014, 11:42 PM Go to last post
  18. R22 replacements

    Started by rhumbard, 09-19-2014 09:46 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 84
    • Views: 5,011
    10-03-2014, 05:56 AM Go to last post
  19. Thumbs up 460V 1PH condenser fan motor ????

    Started by AcDOCnTRAINING, 02-07-2008 06:15 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 80
    • Views: 10,310
    09-17-2011, 10:28 PM Go to last post
  20. HIGH SUCTION PRESSURE / LOW HEAD PRESSURE ISSUE

    Started by EdHvacr, 09-02-2014 06:04 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 80
    • Views: 4,389
    09-06-2014, 06:09 PM Go to last post
  21. Flame sensor testing

    Started by btglow2894, 11-15-2014 03:19 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 80
    • Views: 6,394
    12-16-2014, 11:17 PM Go to last post
  22. Diagnosing a Weak Compressor

    Started by BBeerme, 06-08-2014 08:00 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 79
    • Views: 7,320
    10-02-2014, 08:42 PM Go to last post
  23. Brazing copper to brass

    Started by OBogue, 07-28-2014 05:16 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 79
    • Views: 5,961
    04-17-2015, 09:28 AM Go to last post
  24. Question oil pressure problem

    Started by welling service, 11-17-2012 03:57 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 76
    • Views: 9,787
    01-15-2013, 01:13 AM Go to last post
  25. York Heat Exchangers

    Started by coolerik, 11-22-2013 10:35 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 76
    • Views: 5,084
    02-09-2014, 12:25 AM Go to last post
  26. Compressor not starting.

    Started by Rick Dreyer, 04-29-2015 01:02 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 74
    • Views: 2,928
    05-12-2015, 09:07 PM Go to last post
  27. Trane package unit

    Started by caheiman30, 08-15-2012 03:16 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 73
    • Views: 8,093
    08-22-2012, 12:45 AM Go to last post
  28. Nitrogen or No Nitrogen?

    Started by Grayline, 04-18-2013 07:49 AM
    6 Pages
    1 2 3 4 5 6
    • Replies: 73
    • Views: 6,988
    04-25-2013, 09:31 AM Go to last post
  29. Dolphin chemical free water treatment

    Started by colorado dave, 02-22-2005 07:38 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 71
    • Views: 23,612
    08-20-2014, 10:22 PM Go to last post
  30. A hat tip to rooftop guys.

    Started by Glennhvac, 01-02-2015 11:37 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 71
    • Views: 4,441
    01-11-2015, 11:57 PM Go to last post
  31. How many Amps max on a 2 pole contactir 30amp FLA

    Started by Carlos_me, 01-13-2015 05:47 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 71
    • Views: 3,603
    02-12-2015, 07:36 PM Go to last post
  32. Johnson Controls

    Started by huckleberryjay, 06-10-2010 10:33 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 70
    • Views: 11,550
    09-14-2011, 09:03 PM Go to last post
  33. Torching evaps

    Started by leaker2, 10-23-2013 09:23 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 70
    • Views: 4,743
    11-14-2013, 04:58 PM Go to last post
  34. compressor black over current box tripping

    Started by raven22, 05-17-2013 07:51 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 69
    • Views: 4,101
    05-24-2013, 06:37 PM Go to last post
  35. No one ever replaces sheeves

    Started by marter, 09-13-2014 09:37 AM
    6 Pages
    1 2 3 4 5 6
    • Replies: 69
    • Views: 4,150
    10-02-2014, 07:19 PM Go to last post
  36. Hours to Pm a rooftop.

    Started by mikepinnacle, 08-14-2013 01:22 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 65
    • Views: 6,607
    12-12-2013, 11:08 PM Go to last post
  37. Frown Maybe bypassing compressor

    Started by anders13, 08-08-2014 02:47 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 65
    • Views: 4,118
    08-16-2014, 12:19 AM Go to last post
  38. Holiday Pay

    Started by BBeerme, 12-20-2014 02:23 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 65
    • Views: 4,353
    01-31-2015, 08:09 PM Go to last post
  39. This is why Preventive Maintenance is a waste of money.

    Started by Mike19, 08-21-2014 12:16 AM
    5 Pages
    1 2 3 4 5
    • Replies: 64
    • Views: 6,222
    10-15-2014, 10:52 PM Go to last post
  40. True GDM 49F

    Started by tootiredtoargue, 11-30-2014 06:33 PM
    5 Pages
    1 2 3 4 5
    • Replies: 64
    • Views: 3,036
    12-06-2014, 05:00 PM Go to last post
  41. Water Treatment Questions Welcome!

    Started by waterworld, 11-13-2010 01:48 PM
    5 Pages
    1 2 3 4 5
    • Replies: 63
    • Views: 11,919
    04-16-2015, 07:42 AM Go to last post
  42. RTU's not cooling the building enough

    Started by abcando, 07-06-2012 12:41 AM
    5 Pages
    1 2 3 4 5
    • Replies: 61
    • Views: 7,604
    07-14-2012, 09:33 PM Go to last post
  43. High superheat with NU22B

    Started by Jbart, 07-06-2013 09:02 PM
    5 Pages
    1 2 3 4 5
    • Replies: 61
    • Views: 4,906
    07-21-2013, 04:56 PM Go to last post
    • Replies: 61
    • Views: 5,904
    03-10-2014, 04:16 AM Go to last post
  44. liebert rep

    Started by energy mech, 02-11-2014 04:27 PM
    5 Pages
    1 2 3 4 5
    • Replies: 61
    • Views: 6,009
    03-26-2014, 09:01 PM Go to last post
  45. RTAA125 low on 22 or ...?

    Started by valdelocc, 04-22-2013 08:12 PM
    5 Pages
    1 2 3 4 5
    • Replies: 60
    • Views: 5,036
    10-23-2013, 08:56 AM Go to last post
  46. Roof Top AC unit not cooling

    Started by Matthonda98, 09-02-2014 01:30 PM
    5 Pages
    1 2 3 4 5
    • Replies: 60
    • Views: 3,215
    09-08-2014, 10:15 PM Go to last post
  47. Rooftop Heat Exchanger Failure Causes???

    Started by andrewd33, 12-07-2011 04:52 PM
    5 Pages
    1 2 3 4 5
    • Replies: 58
    • Views: 5,407
    01-21-2012, 04:01 PM Go to last post

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