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Forum: AOP Commercial HVAC

FOR EQUIPMENT OWNERS ONLY Questions and discussions regarding Commercial Buildings

  1. Sticky Thread Sticky Threads

  2. Sticky Thread >>READ THIS FIRST<< NO DIY? Why NOT??

    Started by Dad, 10-31-2011 07:41 PM
    • Replies: 0
    • Views: 16,511
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 14,193
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Rule of thumb: Sq Ft per ton of A/C

    Started by Possumking, 09-04-2008 08:02 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 247,461
    03-13-2012, 09:18 PM Go to last post
  3. cfm's in a ton

    Started by hootie, 04-03-2007 01:25 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 134,766
    09-13-2009, 12:05 AM Go to last post
  4. York Tonnage by Model Number?

    Started by bby, 05-28-2008 05:20 PM
    • Replies: 5
    • Views: 131,371
    05-28-2008, 11:29 PM Go to last post
  5. Hmm Trane Model Numbers?

    Started by Paulio, 03-09-2008 11:02 PM
    3 Pages
    1 2 3
    • Replies: 33
    • Views: 120,183
    04-22-2012, 04:19 PM Go to last post
  6. Icing up due to overcharge?

    Started by hsteiner, 04-03-2005 10:05 AM
    12 Pages
    1 2 3 4 5 6 ... 12
    • Replies: 150
    • Views: 98,691
    08-01-2012, 08:21 PM Go to last post
  7. Trouble shooting Mr. Slim?

    Started by george42, 05-30-2004 02:55 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 82,257
    08-03-2004, 04:12 AM Go to last post
  8. Arrow VAV vs VVT

    Started by dneil75, 01-26-2005 12:39 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 69,942
    03-11-2013, 09:54 PM Go to last post
  9. York Ycas Chiller Failures

    Started by acjourneyman, 10-25-2007 08:26 PM
    12 Pages
    1 2 3 4 5 6 ... 12
    • Replies: 153
    • Views: 69,644
    01-31-2011, 02:50 PM Go to last post
  10. Where are you from?

    Started by _knight_, 08-17-2006 09:13 AM
    27 Pages
    1 2 3 4 5 6 ... 27
    • Replies: 339
    • Views: 65,128
    04-12-2009, 01:43 PM Go to last post
  11. high suction pressure

    Started by chillout, 07-18-2004 11:42 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 57,535
    10-20-2011, 10:01 PM Go to last post
  12. Confused Unlocking a Trane Thermostat

    Started by hjana1978, 01-11-2005 04:18 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 55,936
    10-29-2011, 02:12 AM Go to last post
  13. York/Coleman model nomenclature

    Started by GenoMan, 06-13-2007 02:18 PM
    • Replies: 12
    • Views: 54,828
    12-17-2010, 10:28 AM Go to last post
  14. Confused York Tech support

    Started by neilvac, 11-17-2005 07:03 PM
    • Replies: 8
    • Views: 51,844
    11-28-2005, 07:25 PM Go to last post
  15. Circuit Setter

    Started by etheric999, 12-09-2007 06:00 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 51,229
    11-28-2010, 01:30 PM Go to last post
    • Replies: 77
    • Views: 51,198
    07-22-2012, 05:58 PM Go to last post
  16. condenser approach

    Started by chillered, 01-27-2006 12:00 AM
    • Replies: 11
    • Views: 49,799
    02-15-2006, 11:49 AM Go to last post
  17. Confused out of ideas

    Started by fruecrue, 12-23-2009 07:20 PM
    29 Pages
    1 2 3 4 5 6 ... 29
    • Replies: 374
    • Views: 46,743
    05-18-2010, 05:53 PM Go to last post
  18. Lochinvar Boiler Flame Failure Problem

    Started by jogas, 03-08-2007 04:48 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 46,422
    10-06-2007, 08:49 PM Go to last post
  19. Confused Fan External Static Pressure??

    Started by starter, 04-24-2006 12:01 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 46,170
    05-28-2009, 05:03 PM Go to last post
  20. Question Fan Cycle Controls

    Started by hvac2379, 04-06-2006 03:39 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 45,172
    04-22-2009, 06:51 PM Go to last post
  21. TRANE Tech Support

    Started by pete_d, 05-13-2008 11:50 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 44,608
    05-19-2008, 09:34 AM Go to last post
  22. Sensible vs Latent heat

    Started by DCN289, 03-13-2008 12:28 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 44,176
    03-26-2008, 11:36 PM Go to last post
  23. Trane vs. York centrifugal

    Started by facilitiesguy, 02-13-2008 03:21 PM
    13 Pages
    1 2 3 4 5 6 ... 13
    • Replies: 159
    • Views: 41,877
    05-19-2008, 09:25 PM Go to last post
  24. BTU/hr calculation

    Started by pwn01, 08-03-2007 11:22 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 41,795
    09-01-2007, 05:13 PM Go to last post
  25. Liebert CRAC unit - short cycle problem

    Started by Hutch, 07-15-2009 01:09 PM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 41,414
    10-03-2011, 08:52 PM Go to last post
  26. are YORK techs bailing?

    Started by streetsmarts, 10-08-2006 11:30 AM
    17 Pages
    1 2 3 4 5 6 ... 17
    • Replies: 208
    • Views: 40,610
    12-06-2008, 08:40 AM Go to last post
  27. How a CRAC unit works -- DC

    Started by Boots22, 04-02-2007 02:46 PM
    • Replies: 12
    • Views: 39,657
    04-06-2007, 11:30 AM Go to last post
  28. Confused suction line freezing

    Started by shultz440, 06-11-2010 07:44 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 38,977
    06-15-2010, 08:14 PM Go to last post
  29. Pressure checking a Propane Line

    Started by Gebo, 02-02-2008 06:26 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 38,818
    02-04-2008, 07:43 PM Go to last post
  30. Single phase condenser motor running backwards

    Started by killer v, 07-22-2011 10:46 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 37,606
    07-28-2011, 08:56 PM Go to last post
  31. daikin vs mitsubishi

    Started by kaehvac, 02-21-2008 08:47 AM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 37,265
    10-04-2011, 09:57 AM Go to last post
  32. Reheat Coils

    Started by Salvinian, 12-11-2007 10:30 AM
    • Replies: 10
    • Views: 36,934
    12-13-2007, 08:35 PM Go to last post
  33. Rule of thumb for CFM?

    Started by sonc, 08-15-2004 05:32 PM
    • Replies: 10
    • Views: 36,774
    08-17-2004, 06:48 AM Go to last post
  34. Condensing units vs dry coolers?

    Started by Grawburg, 06-21-2008 03:47 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 36,668
    12-30-2011, 01:14 PM Go to last post
  35. 3 phase compressor check

    Started by Ricky Dale, 10-31-2009 01:34 AM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 102
    • Views: 36,308
    01-04-2010, 07:15 PM Go to last post
  36. Chiller tonnage formula

    Started by fixerup, 04-04-2006 08:57 PM
    • Replies: 12
    • Views: 35,079
    04-08-2006, 09:04 AM Go to last post
    • Replies: 11
    • Views: 34,115
    11-11-2009, 06:08 PM Go to last post
  37. Chiller cooling output calculation in KW

    Started by danish, 06-28-2009 07:02 AM
    • Replies: 9
    • Views: 33,514
    07-19-2009, 03:17 AM Go to last post
  38. Carrier chillers --- Approach temperatures

    Started by licensed to chill, 07-14-2008 06:44 PM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 32,851
    07-10-2009, 01:35 AM Go to last post
  39. Question how do you calculate condensor subcooling?

    Started by ptrck, 10-11-2004 08:45 PM
    • Replies: 2
    • Views: 32,687
    10-11-2004, 10:01 PM Go to last post

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