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Forum: Energy Efficiency and Building Performance Discussion NEW

Energy Efficiency and Building Performance Discussion

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  2. Electrify Everything

    Started by mhoush, 12-16-2020 09:01 PM
    6 Pages •
    1 2 3 4 5 6
    1 Attachment(s)
    • Replies: 103
    • Views: 51,381
    teddy bear
    Yesterday, 07:48 PM Go to last post

  3. Chiller plant

    Started by mackeye, 01-26-2024 05:12 PM
    • Replies: 3
    • Views: 2,600
    ehsx
    01-26-2024, 09:08 PM Go to last post

  4. Bang for your Efficiency Buck

    Started by ILikeEmOlder, 12-24-2023 10:52 AM
    • Replies: 0
    • Views: 315
    ILikeEmOlder
    12-24-2023, 10:52 AM Go to last post

  5. Question ERV where to put the fresh air!

    Started by M2coolcomfort, 02-10-2021 10:08 AM
    2 Pages •
    1 2
    • Replies: 21
    • Views: 25,723
    StellarAir
    12-22-2023, 03:47 PM Go to last post

  6. Should I Be Concern About A 13 SEER A/C Unit Producing 26.90 SEER?

    Started by cook42, 07-11-2022 09:17 PM
    • Replies: 6
    • Views: 23,233
    jtrammel
    12-13-2023, 04:10 PM Go to last post

  7. How many CFM to ventilate a compressor room.

    Started by Galt, 09-22-2023 09:50 PM
    1 Attachment(s)
    • Replies: 12
    • Views: 14,771
    TechmanTery
    12-12-2023, 10:04 AM Go to last post

  8. Correct Forum? HVAC load calculations? Exterior wall height vs Ceiling Height.

    Started by QuestionThat, 10-25-2023 10:59 PM
    • Replies: 3
    • Views: 7,611
    madvb
    12-11-2023, 08:32 PM Go to last post

  9. Old Home Gets Modern Mechanicals

    Started by ILikeEmOlder, 12-01-2023 01:27 PM
    1 Attachment(s)
    • Replies: 15
    • Views: 852
    ILikeEmOlder
    12-02-2023, 11:42 AM Go to last post

  10. Conditioned crawl space

    Started by Krom, 11-04-2023 12:31 PM
    • Replies: 3
    • Views: 5,673
    hvacker
    11-05-2023, 06:15 PM Go to last post

  11. Solar Evaporation-Distillation system for extracting fresh water from sea water

    Started by David Lyman, 09-04-2023 01:10 PM
    • Replies: 1
    • Views: 17,467
    swamped
    10-20-2023, 02:33 PM Go to last post

  12. Load calc discussion last night on HVAC20:

    Started by tedkidd, 10-17-2023 12:30 PM
    • Replies: 0
    • Views: 8,893
    tedkidd
    10-17-2023, 12:30 PM Go to last post

  13. chiller efficiency

    Started by mohad_i, 12-12-2021 08:10 AM
    • Replies: 13
    • Views: 21,558
    moideen
    09-02-2023, 11:57 PM Go to last post

  14. Solar attic fan to help upstairs AC?

    Started by Razor488, 07-26-2023 08:16 AM
    • Replies: 4
    • Views: 18,975
    Unlimited1
    08-08-2023, 06:22 PM Go to last post

  15. ERV or Whole Home DEHU

    Started by Tekjunkie, 02-27-2023 12:21 PM
    2 Pages •
    1 2
    • Replies: 32
    • Views: 23,809
    tedkidd
    07-23-2023, 01:04 PM Go to last post

  16. Ventilation in a Post-Covid World

    Started by tridiumtech, 11-17-2022 05:47 PM
    • Replies: 1
    • Views: 19,483
    lnewcombe
    06-20-2023, 03:35 PM Go to last post

  17. Question Feedback Wanted / New product for commercial buildings

    Started by NickXML, 05-27-2023 02:14 PM
    • Replies: 15
    • Views: 19,146
    NickXML
    06-01-2023, 01:55 PM Go to last post

  18. 14 SEER System Vs. 18 SEER System

    Started by Sparky32, 05-19-2023 01:59 PM
    2 Attachment(s)
    • Replies: 10
    • Views: 19,697
    Sparky32
    05-22-2023, 03:29 PM Go to last post

  19. HVAC 2.0 on youtube about residential ventilation

    Started by kdean1, 03-28-2023 03:58 PM
    • Replies: 6
    • Views: 20,045
    tedkidd
    04-10-2023, 10:17 PM Go to last post

  20. sourcing end-of-life Schrader Valves for testing

    Started by remcmurry, 01-19-2023 06:28 PM
    2 Pages •
    1 2
    • Replies: 22
    • Views: 20,851
    R600a
    02-13-2023, 06:38 PM Go to last post

  21. Need help with a condition assessment of the RTU and the space it serves

    Started by jtniagara, 01-22-2023 09:47 PM
    • Replies: 0
    • Views: 19,339
    jtniagara
    01-22-2023, 09:47 PM Go to last post

  22. Rheem Inverter lower COP vs Rheem traditional heat pump???

    Started by P0234, 12-12-2022 11:16 AM
    • Replies: 18
    • Views: 21,190
    hvacker
    01-11-2023, 05:19 PM Go to last post

  23. Fan energy cost calculation

    Started by incontrol, 12-04-2022 09:58 PM
    • Replies: 8
    • Views: 19,643
    Artrose
    12-10-2022, 07:46 PM Go to last post

  24. additional heat pump capacity

    Started by MIKEALSO, 05-23-2022 05:00 PM
    • Replies: 5
    • Views: 21,095
    James Colver
    09-29-2022, 10:21 PM Go to last post

  25. Efficient Duct Design? I have concerns

    Started by walkingdrunken, 02-22-2022 08:36 AM
    5 Pages •
    1 2 3 4 5
    6 Attachment(s)
    • Replies: 87
    • Views: 36,444
    Poodle Head Mikey
    07-04-2022, 10:14 AM Go to last post

  26. Heat Pump and COP

    Started by ggazzola, 02-23-2022 09:07 AM
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 22
    • Views: 22,184
    Jimmy111
    05-12-2022, 05:28 PM Go to last post

  27. R410 phase down and R454B alternative

    Started by mohad_i, 05-07-2022 04:48 AM
    • Replies: 0
    • Views: 20,543
    mohad_i
    05-07-2022, 04:48 AM Go to last post

  28. Amperage usage for Multi Stage Compressors

    Started by Inspector314, 07-08-2021 09:16 PM
    • Replies: 8
    • Views: 23,220
    Artrose
    02-20-2022, 09:24 AM Go to last post

  29. Confused Theory Talk: Why dirt and debris reduce the effectiveness of water treatment chemical

    Started by hangstick, 01-02-2022 04:56 AM
    • Replies: 7
    • Views: 21,487
    WakandaForNow
    01-14-2022, 04:50 PM Go to last post

  30. Air to Air Heat Pump in cold temperatures

    Started by bduemig, 01-12-2020 10:15 AM
    2 Pages •
    1 2
    • Replies: 23
    • Views: 31,074
    Inspector314
    01-08-2022, 09:25 PM Go to last post

  31. Which equation for annual heating energy saved with HDD?

    Started by FrankF_mfg, 12-13-2021 08:53 AM
    • Replies: 0
    • Views: 20,316
    FrankF_mfg
    12-13-2021, 08:53 AM Go to last post

  32. Ground to space controls

    Started by Lariliss, 11-12-2021 03:03 AM
    • Replies: 0
    • Views: 19,836
    Lariliss
    11-12-2021, 03:03 AM Go to last post

  33. Question Greetings and a question about some "smart" windows

    Started by EEEngineer, 07-02-2021 09:07 AM
    • Replies: 12
    • Views: 22,127
    EEEngineer
    11-09-2021, 04:01 PM Go to last post

  34. Understanding EER

    Started by Aircol, 09-30-2021 08:09 PM
    • Replies: 2
    • Views: 26,364
    Aircol
    10-15-2021, 02:55 PM Go to last post

  35. Sizing A/C and ERV for my house

    Started by Retread, 02-18-2021 04:56 PM
    2 Attachment(s)
    • Replies: 4
    • Views: 25,129
    kdean1
    09-01-2021, 08:46 AM Go to last post

  36. Confused Heat Pump efficiency and low temps 2021 - Replacement existing system

    Started by Veev, 04-09-2021 04:32 PM
    • Replies: 8
    • Views: 25,106
    Inspector314
    07-09-2021, 11:09 AM Go to last post

  37. twin heat recovery wheel for FAHU

    Started by moideen, 06-01-2021 02:48 AM
    • Replies: 0
    • Views: 21,382
    moideen
    06-01-2021, 02:48 AM Go to last post

  38. 2 stage, multiple condenser system question.

    Started by 23F5%, 05-05-2021 09:23 AM
    • Replies: 5
    • Views: 22,071
    23F5%
    05-10-2021, 10:06 AM Go to last post

  39. Design principles for a comfortable HVAC system

    Started by Jamesss, 04-01-2021 07:20 AM
    • Replies: 1
    • Views: 22,476
    Artrose
    04-01-2021, 07:18 PM Go to last post

  40. 10000 BTU Emergency Window Unit: Best energy efficiency plus build quality?

    Started by Vigilant994, 02-28-2021 09:00 PM
    • Replies: 5
    • Views: 22,487
    Vigilant994
    03-01-2021, 04:47 PM Go to last post

  41. Refrigerant Retrofitting

    Started by mohad_i, 01-26-2021 03:57 AM
    • Replies: 0
    • Views: 22,055
    mohad_i
    01-26-2021, 03:57 AM Go to last post
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