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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: 10,307
    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: 157,427
    07-28-2013, 09:10 AM Go to last post
  3. ISCEON® MO99™ refrigerant ( R-438a )

    Started by freonguy, 08-18-2009 05:15 PM
    5 Pages
    1 2 3 4 5
    • Replies: 53
    • Views: 58,701
    09-20-2012, 11:16 AM Go to last post
  4. 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: 45,557
    08-08-2013, 06:59 PM Go to last post
  5. Best Recovery Machines

    Started by softtail, 01-01-2007 02:00 PM
    4 Pages
    1 2 3 4
    • Replies: 46
    • Views: 41,954
    08-02-2012, 07:34 PM Go to last post
  6. r-22 with poe oil

    Started by anthonyac1, 03-12-2012 09:48 PM
    4 Pages
    1 2 3 4
    • Replies: 44
    • Views: 37,614
    06-27-2016, 08:13 PM Go to last post
  7. How much refrigerant can a recovery tank hold?

    Started by bgrich2003, 07-30-2012 10:28 AM
    • Replies: 11
    • Views: 37,190
    08-01-2012, 08:26 AM Go to last post
  8. Anyone doing Family Dollar or Dollar General service?

    Started by MechTech2013, 06-06-2014 02:04 AM
    15 Pages
    1 2 3 4 5 6 ... 15
    • Replies: 186
    • Views: 34,539
    11-19-2015, 12:10 AM Go to last post
  9. 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: 31,369
    08-20-2014, 10:22 PM Go to last post
  10. refrigerant restriction

    Started by johnnyb, 05-03-2014 10:37 AM
    19 Pages
    1 2 3 4 5 6 ... 19
    • Replies: 240
    • Views: 27,535
    08-02-2014, 09:11 PM Go to last post
  11. face velocity formula

    Started by oldtimer2, 08-23-2010 04:54 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 25,627
    05-20-2014, 01:39 AM Go to last post
  12. Oil foaming in Compressor sight glass

    Started by elvis66, 08-16-2011 11:57 AM
    3 Pages
    1 2 3
    • Replies: 32
    • Views: 25,002
    12-06-2011, 11:06 PM Go to last post
  13. 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: 23,918
    10-20-2014, 06:02 PM Go to last post
  14. on call

    Started by northeastbeast, 08-02-2013 07:03 AM
    11 Pages
    1 2 3 4 5 6 ... 11
    • Replies: 134
    • Views: 22,412
    09-15-2013, 10:56 AM Go to last post
  15. 3 phase ac compressor

    Started by biggi, 04-16-2013 08:34 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 21,136
    04-21-2017, 04:05 PM Go to last post
  16. High suction pressure low to normal head?

    Started by Gonzo2611, 08-28-2012 10:13 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 20,803
    09-16-2012, 03:00 AM Go to last post
  17. Carrier will lay off 2100 peaple

    Started by servicefitter, 02-11-2016 10:18 PM
    21 Pages
    1 2 3 4 5 6 ... 21
    • Replies: 260
    • Views: 20,763
    07-24-2016, 08:11 PM Go to last post
    • Replies: 176
    • Views: 20,513
    07-25-2014, 04:26 PM Go to last post
  18. Water source heat pump high head pressure

    Started by PolarBearAir, 09-16-2011 09:57 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 20,235
    11-01-2014, 09:13 AM Go to last post
  19. VRF

    Started by acman17, 05-19-2014 08:20 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 91
    • Views: 19,972
    05-08-2016, 02:32 PM Go to last post
  20. Diagnosing a Weak Compressor

    Started by BBeerme, 06-08-2014 08:00 PM
    9 Pages
    1 2 3 4 5 6 ... 9
    • Replies: 104
    • Views: 18,908
    07-14-2015, 09:28 AM Go to last post
  21. Loss of flow alarms on new trane chiller!?!?

    Started by Wes G., 08-23-2012 11:23 PM
    4 Pages
    1 2 3 4
    • Replies: 49
    • Views: 18,066
    03-01-2017, 07:38 AM Go to last post
  22. txv brazing techniques

    Started by mizzouhvac, 06-19-2011 08:56 AM
    5 Pages
    1 2 3 4 5
    • Replies: 53
    • Views: 18,022
    02-08-2017, 08:20 AM Go to last post
  23. quiet 230V contactor

    Started by SolarMike, 12-10-2011 02:07 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 17,628
    12-13-2011, 09:42 PM Go to last post
  24. Johnson Controls

    Started by huckleberryjay, 06-10-2010 10:33 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 70
    • Views: 17,326
    09-14-2011, 09:03 PM Go to last post
  25. Water Treatment Questions Welcome!

    Started by waterworld, 11-13-2010 01:48 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 65
    • Views: 17,010
    02-02-2017, 05:25 PM Go to last post
  26. Flame sensor testing

    Started by btglow2894, 11-15-2014 03:19 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 80
    • Views: 16,795
    12-16-2014, 11:17 PM Go to last post
  27. 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: 16,771
    06-21-2012, 10:06 PM Go to last post
  28. Diagnosing Faulty TXV

    Started by dixie2005, 07-20-2005 09:22 PM
    • Replies: 9
    • Views: 16,246
    04-26-2013, 07:42 AM Go to last post
  29. 3 phase question

    Started by YatYas, 01-08-2015 07:18 PM
    10 Pages
    1 2 3 4 5 6 ... 10
    • Replies: 117
    • Views: 15,850
    01-15-2015, 04:45 PM Go to last post
  30. Carlyle compressor

    Started by Chris1570, 08-22-2013 08:03 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 97
    • Views: 15,646
    05-11-2014, 03:23 PM Go to last post
  31. 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: 15,612
    09-17-2011, 10:28 PM Go to last post
  32. Work Pants

    Started by Pascone10, 05-31-2014 03:03 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 72
    • Views: 15,612
    09-11-2016, 12:08 PM Go to last post
  33. 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: 15,578
    01-15-2013, 01:13 AM Go to last post
  34. 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: 15,403
    09-28-2013, 02:17 PM Go to last post
  35. anyone know how trane reliatel system works?

    Started by deon1116, 02-02-2007 01:26 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 15,372
    04-10-2013, 08:41 PM Go to last post
  36. 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: 15,352
    04-14-2015, 10:59 AM Go to last post
    • Replies: 106
    • Views: 15,325
    01-29-2013, 08:00 PM Go to last post
  37. Compressor not starting.

    Started by Rick Dreyer, 04-29-2015 01:02 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 90
    • Views: 14,585
    06-28-2015, 11:28 AM Go to last post
  38. Refrigerant Stop Leak

    Started by gmac100, 03-16-2012 09:19 AM
    3 Pages
    1 2 3
    • Replies: 36
    • Views: 14,196
    05-21-2012, 03:37 PM Go to last post
  39. Typical overtime policies?

    Started by mcairrepair, 07-26-2012 10:06 PM
    5 Pages
    1 2 3 4 5
    • Replies: 54
    • Views: 14,173
    11-13-2012, 09:37 AM Go to last post
  40. Daikin VRV

    Started by ChaseW, 05-27-2012 10:05 AM
    4 Pages
    1 2 3 4
    • Replies: 49
    • Views: 13,958
    11-13-2013, 07:35 AM Go to last post
  41. GROUNDED B PHASE

    Started by VTP99, 01-29-2012 03:43 PM
    4 Pages
    1 2 3 4
    • Replies: 47
    • Views: 13,781
    03-25-2012, 07:32 AM Go to last post
  42. 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: 13,587
    11-30-2014, 03:46 AM Go to last post
    • Replies: 96
    • Views: 13,487
    02-04-2013, 12:14 PM Go to last post
  43. Leak Lock

    Started by hands, 10-09-2012 07:58 PM
    3 Pages
    1 2 3
    • Replies: 26
    • Views: 13,373
    01-22-2015, 08:21 AM Go to last post
  44. Lennox RTU Problem

    Started by mattster72, 12-15-2011 10:04 AM
    2 Pages
    1 2
    • Replies: 24
    • Views: 13,271
    12-24-2011, 03:28 PM Go to last post
  45. 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: 13,200
    04-17-2015, 09:28 AM Go to last post
  46. Plant operator??

    Started by newtradesman, 10-21-2004 04:59 PM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 96
    • Views: 13,000
    01-21-2013, 06:50 PM Go to last post
  47. Using a megger for hvac/r

    Started by akelesis, 08-12-2012 01:26 PM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 12,975
    09-05-2012, 07:02 AM Go to last post
  48. Old Modine Make Up Air

    Started by Trevor11, 12-14-2011 12:22 AM
    • Replies: 4
    • Views: 12,905
    12-14-2011, 09:34 PM Go to last post

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