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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: 14,282
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 12,135
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Marley Cooling Tower Serial No. Lookup

    Started by Bullcalls, Yesterday 09:37 PM
    • Replies: 0
    • Views: 31
    Yesterday, 09:37 PM Go to last post
  3. R22 upgrade question. Can you replace coils?

    Started by phlipper, 04-20-2019 03:41 PM
    • Replies: 10
    • Views: 275
    Yesterday, 07:30 PM Go to last post
  4. Maximum discharge temperature of a compressor

    Started by vijay2309, 04-18-2019 10:58 AM
    • Replies: 4
    • Views: 199
    04-21-2019, 11:29 AM Go to last post
    • Replies: 1
    • Views: 134
    04-20-2019, 08:31 AM Go to last post
  5. Humidity HELL!

    Started by Bryan72880, 04-11-2019 11:36 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 995
    04-17-2019, 05:53 PM Go to last post
  6. Emerson zo series scroll compressor

    Started by vijay2309, 04-16-2019 12:57 PM
    • Replies: 1
    • Views: 135
    04-17-2019, 08:15 AM Go to last post
  7. replacing humidifier media

    Started by currierfac, 04-16-2019 04:10 PM
    • Replies: 0
    • Views: 100
    04-16-2019, 04:10 PM Go to last post
    • Replies: 0
    • Views: 83
    04-16-2019, 12:54 PM Go to last post
  8. Dedicated out side AHU to FCU

    Started by Javed Shaikh, 12-19-2018 04:02 PM
    • Replies: 2
    • Views: 516
    04-16-2019, 12:48 PM Go to last post
  9. YORK YCIV CHILLER SUCTION PRESSURE FLUCTUATED

    Started by Hadi Had, 04-15-2019 08:16 PM
    • Replies: 0
    • Views: 113
    04-15-2019, 08:16 PM Go to last post
  10. Ch530 replacement

    Started by Roybow, 04-15-2019 06:50 AM
    • Replies: 0
    • Views: 116
    04-15-2019, 06:50 AM Go to last post
  11. Replaced Cond Fan, can't cool below 10deg now

    Started by SonRise, 04-14-2019 01:23 PM
    • Replies: 7
    • Views: 253
    04-14-2019, 02:04 PM Go to last post
    • Replies: 6
    • Views: 253
    04-13-2019, 05:30 PM Go to last post
  12. Wireless thermostat stuck in hot/cool modes

    Started by Fullmore73, 04-11-2019 09:12 AM
    • Replies: 1
    • Views: 194
    04-11-2019, 09:33 AM Go to last post
  13. best pocketknife BY FAR for commercial hvac

    Started by brownplus, 04-10-2019 07:53 PM
    • Replies: 0
    • Views: 211
    04-10-2019, 07:53 PM Go to last post
  14. Pumping down a Long line set

    Started by Corvac, 04-05-2019 10:52 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 1,040
    04-09-2019, 07:50 PM Go to last post
    • Replies: 0
    • Views: 161
    04-08-2019, 03:53 AM Go to last post
  15. Vibration from Commercial AC on Roof

    Started by szigman18, 04-04-2019 10:05 AM
    • Replies: 4
    • Views: 265
    04-07-2019, 05:23 PM Go to last post
  16. Ch530

    Started by Roybow, 04-03-2019 10:21 AM
    • Replies: 2
    • Views: 248
    04-04-2019, 09:23 AM Go to last post
  17. What is this commercial component?

    Started by Gasman85, 04-03-2019 04:57 PM
    • Replies: 6
    • Views: 290
    04-04-2019, 07:59 AM Go to last post
  18. Refrigerant tracking

    Started by mafranklin81, 04-02-2019 08:32 AM
    • Replies: 4
    • Views: 281
    04-02-2019, 11:36 AM Go to last post
  19. HELP with understanding HVAC

    Started by russcoop, 03-30-2019 01:18 PM
    • Replies: 9
    • Views: 498
    03-31-2019, 09:23 AM Go to last post
  20. VRF issue

    Started by Kkirwan71, 03-30-2019 09:55 AM
    • Replies: 6
    • Views: 345
    03-30-2019, 08:05 PM Go to last post
  21. Cost effective ways ducts

    Started by Cool_man, 03-29-2019 01:20 AM
    • Replies: 0
    • Views: 221
    03-29-2019, 01:20 AM Go to last post
  22. honeywell xl800 A/I module throwing trouble code

    Started by mlarson29, 03-27-2019 06:32 PM
    • Replies: 1
    • Views: 204
    03-27-2019, 07:07 PM Go to last post
  23. VRF or Conventional splits

    Started by bestsplitac, 03-19-2019 12:30 AM
    • Replies: 2
    • Views: 456
    03-24-2019, 11:10 AM Go to last post
  24. Chiller flow set point

    Started by Javed Shaikh, 03-17-2019 12:00 PM
    • Replies: 11
    • Views: 669
    03-23-2019, 04:22 PM Go to last post
    • Replies: 9
    • Views: 418
    03-23-2019, 11:40 AM Go to last post
    • Replies: 2
    • Views: 303
    03-21-2019, 10:35 AM Go to last post
    • Replies: 29
    • Views: 740
    03-20-2019, 01:20 PM Go to last post
    • Replies: 0
    • Views: 216
    03-20-2019, 04:03 AM Go to last post
  25. Warehouse Humidity level

    Started by jamesj, 03-18-2019 03:01 PM
    • Replies: 5
    • Views: 307
    03-18-2019, 10:05 PM Go to last post
  26. Non-Profit Help

    Started by lburt, 03-15-2019 10:49 AM
    • Replies: 1
    • Views: 353
    03-17-2019, 05:56 AM Go to last post
  27. Water to water heat pump for high temperature hot water

    Started by vijay2309, 03-08-2019 08:38 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 848
    03-16-2019, 09:52 PM Go to last post
    • Replies: 0
    • Views: 245
    03-15-2019, 03:34 PM Go to last post
    • Replies: 7
    • Views: 442
    03-14-2019, 04:51 PM Go to last post
  28. Angry Honeywell TR23 - Troubleshooting

    Started by gicahagi, 03-13-2019 11:27 AM
    • Replies: 5
    • Views: 406
    03-14-2019, 10:13 AM Go to last post
  29. Trane YDS300 vent motor no go!!

    Started by Brian Brutus, 03-06-2019 06:58 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 748
    03-13-2019, 01:08 PM Go to last post
    • Replies: 0
    • Views: 377
    03-12-2019, 04:39 PM Go to last post
  30. Ccad vent questions

    Started by hlivestock, 03-10-2019 09:05 PM
    • Replies: 8
    • Views: 464
    03-10-2019, 09:18 PM Go to last post
  31. Confused Will this unit keep up?

    Started by airforcematt, 03-07-2019 03:21 PM
    • Replies: 1
    • Views: 440
    03-10-2019, 11:32 AM Go to last post
  32. York RTU heater question

    Started by 67Rambler343, 03-08-2019 11:08 AM
    • Replies: 0
    • Views: 402
    03-08-2019, 11:08 AM Go to last post
  33. snow infiltration on large AHU

    Started by lolojr1, 03-07-2019 08:03 PM
    • Replies: 2
    • Views: 464
    03-08-2019, 08:34 AM Go to last post
  34. True Ref. Compressor wont shut off, not Tempstute Switch

    Started by PoultryFarmer, 02-22-2019 11:28 AM
    2 Pages
    1 2
    • Replies: 23
    • Views: 804
    03-06-2019, 06:46 PM Go to last post
  35. Confused SWUD

    Started by sshep19, 03-06-2019 03:43 PM
    • Replies: 0
    • Views: 387
    03-06-2019, 03:43 PM Go to last post
  36. Low-termperature furnace adaption

    Started by Andersd, 02-26-2019 05:00 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 1,072
    03-05-2019, 05:55 AM Go to last post
  37. Carrier 17Da

    Started by EastPlant2643, 03-01-2019 07:50 AM
    • Replies: 1
    • Views: 405
    03-01-2019, 09:42 AM Go to last post
  38. How to size an AC unit for large air changes?

    Started by Greensparrow, 02-25-2019 11:18 AM
    • Replies: 5
    • Views: 429
    02-27-2019, 08:39 AM Go to last post
  39. Foreign object in York OM

    Started by CM1, 02-25-2019 03:42 PM
    • Replies: 2
    • Views: 346
    02-25-2019, 04:26 PM Go to last post
  40. Confused Thermostat wiring issues

    Started by Shiloh790, 02-13-2019 05:53 PM
    • Replies: 10
    • Views: 880
    02-14-2019, 12:35 PM Go to last post

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