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High CFM Fart Fan (Exhaust) on short run 4 inch duct

Discussion in 'Residential' started by dylanmitchell, Nov 17, 2017.

  1. dylanmitchell

    dylanmitchell New Member

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    Doing ducting and customer now wants higher CFM fart fan. Fan vent is short run 4 inch ducting to roof vent through attic. What's a good high CFM bath fan for 4 inch and what's the calc on max CFM for exhaust fan? Existing ducting on fan is decent shape can replace with 6 inch if needed. Used to doing ducting calcs for HVAC

    Usually we'd refer this out but it's great customer who's willing to pay. Wait willing to pay means great customer.

    I didn't ask who was stinking up the fart chamber. Don't want to know.
     
  2. Chuck

    Chuck SSP

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    E3B25E33-DE48-4F79-AFCE-BF56F7156C94.jpeg One of these should do it.
     
  3. 22blood

    22blood red wire nuts only

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    4" Wow just ceiling joints. Corrugated?
     
  4. dylanmitchell

    dylanmitchell New Member

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    More like this one.
     

    Attached Files:

  5. newtech

    newtech 636

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  6. pecmsg

    pecmsg Junior my ASS

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  7. Catpower

    Catpower The Crowd Pleaser

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    in the Cabana
  8. HMD

    HMD does it matter?

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    leave a book of matches on the tank
     
  9. knave

    knave Undeterred

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    Out for a rip
    .
     
    Last edited: Nov 20, 2017
  10. doc havoc

    doc havoc A cunning linguist

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    Editing at 4:13 AM? Good God man! Get some sleep!:D
     
  11. knave

    knave Undeterred

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    Out for a rip
    I know man... Riley was crying who woke up the 5 yo daughter and wife was coughing so guess what.
     
  12. doc havoc

    doc havoc A cunning linguist

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    I don't miss those days! I wouldn't trade them for anything, but I don't miss them. Mine are 20, 18 and 17 years old. I ain't getting up at 4 AM for anything!
     
    knave likes this.
  13. Catpower

    Catpower The Crowd Pleaser

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    Except to shoot young man who took out your daughter at 7 the night before:uzi::uzi::lachen::lachen:
     
    doc havoc, Zman and MNHVAC like this.
  14. crackertech

    crackertech assholiness *

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    You told her to stop coughing and go take care of the baby her damn self:D
     
    Zman likes this.
  15. MNHVAC

    MNHVAC Man on a mission

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    Ha! Last time I was woke in the middle of the night was years ago by my 7yr old claiming to have had a "wet fart." Well...all the bedding had to be washed, house had to be febreezed, windows had to be opened. Good thing it was a weekend so we did t have to go to work.lol
     
    doc havoc and Catpower like this.
  16. Zman

    Zman Hanging by a Thread

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    The "I know a Guy" State
    Except to Empty the Bladder!
     
  17. doc havoc

    doc havoc A cunning linguist

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    Knock on wood, I'm 48 years old and the bladder still holds From 11:00 PM to at least 7:30 AM if I sleep that long! Which I often do on weekends.
     
    MNHVAC likes this.
  18. MNHVAC

    MNHVAC Man on a mission

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    I had a good Depends meme all qued up but I like my grades right where they're at.lol
     
  19. doc havoc

    doc havoc A cunning linguist

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    You could put it up for some of the elderly folks on that contribute to this forum. I will not mention any names, but I'm sure somebody else will be along to fill in the blanks.:D
     
    MNHVAC and newtech like this.
  20. crackertech

    crackertech assholiness *

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    :boid::boid::boid:
     
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