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Thread: Booster Fans

  1. 11-02-2009, 02:35 PM #1
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    Big Unit
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    Booster Fans

    I have a customer that did a "do-it-yourself-project" and put a small addition onto their home. They cut the end of the duct and extended it into this space. The problem is that the air isn't making it their. The original install didn't include any dampers so I can't balance it properly and am trying to find a quick and easy solution here. I have never used inline booster fans and would like everyones opinion of them. The duct where they would be installed is 10"x8" so what I was thinking was to install two 4" round inline fans. Your comments are appreciated.

    Thanks
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  2. 11-02-2009, 03:09 PM #2
    the dangling wrangler
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    No quick and easy solution here. Sorry. You could probably put ten fans in there, and still not solve the problem.
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  3. 11-02-2009, 03:15 PM #3
    ga-hvac-tech
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    Yeah, Wrangler is right on this one (not that he is ever wrong... right John...).

    Tuff to modify ductwork without changing lots of things...

    The HO might try to close/adjust things here and there.
    GA-HVAC-Tech

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  4. 11-02-2009, 03:23 PM #4
    francosair
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    Cool

    Quote Originally Posted by the dangling wrangler View Post
    No quick and easy solution here. Sorry. You could probably put ten fans in there, and still not solve the problem.
    Correct!
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  5. 11-02-2009, 03:25 PM #5
    the dangling wrangler
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    Quote Originally Posted by ga-hvac-tech View Post
    Yeah, Wrangler is right on this one (not that he is ever wrong... right John...).

    Tuff to modify ductwork without changing lots of things...

    The HO might try to close/adjust things here and there.
    Well, Thank You John.

    We all know the duct needs to be revamped , if this is ever going to work correctly.

    The only thing I've ever done with booster fans, is remove them. And do whatever modifications were necessary. Never cheap. Never easy.
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  6. 11-02-2009, 03:43 PM #6
    ga-hvac-tech
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    Quote Originally Posted by the dangling wrangler View Post
    Well, Thank You John.

    We all know the duct needs to be revamped , if this is ever going to work correctly.

    The only thing I've ever done with booster fans, is remove them. And do whatever modifications were necessary. Never cheap. Never easy.
    Now you and Cindy owe me dinner for boosting your reputation online... LOL

    Dad is doing MUCH better, he is full of pickles and vinegar now... I think he is getting well...
    GA-HVAC-Tech

    Galatians 2:20-21; Colossians 1: 21-22 & 26-27; 3:1-4; Romans Ch's 5-6-7-8

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  7. 11-02-2009, 03:52 PM #7
    the dangling wrangler
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    Quote Originally Posted by ga-hvac-tech View Post
    Now you and Cindy owe me dinner for boosting your reputation online... LOL

    Dad is doing MUCH better, he is full of pickles and vinegar now... I think he is getting well...
    OK. Next time you're in town, you can collect on that.

    Good to hear that about your dad.


    Hijack over!
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  8. 11-02-2009, 04:44 PM #8
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    beenthere
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    Might also have a return problem.
    Hard to supply additional air. If you don't have additional return.
    Contractor locator map

    How many times must one fix something before it is fixed?
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  9. 11-02-2009, 04:46 PM #9
    the dangling wrangler
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    Quote Originally Posted by beenthere View Post
    Might also have a return problem.
    Hard to supply additional air. If you don't have additional return.
    Good point.
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  10. 11-02-2009, 07:57 PM #10
    dash
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    www.fantech.net for booster fans (inline fans) that actually move air.

    Return check is a good suggestion.

    Running a flex duct from the plenum, to near where the added duct starts,will increase air flow too,if space allows.

    link corrected ,I hope.
    Last edited by dash; 11-02-2009 at 11:50 PM.
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  11. 11-02-2009, 08:35 PM #11
    the dangling wrangler
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    Bad link. But, I still don't like 'em. I'd install one but, it would be under duress.
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  12. 11-02-2009, 08:55 PM #12
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    Wheelbaron
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    Only place I ever saw a "booster" work was on a fresh air intake for a restaurant. 14" spiral with the original MAU, but due to remodel they extended it about 20 feet. They added a booster about halfway and set it up to run at the same static pressure as the MAU.

    All the residential ones I have seen were nothing more than a big obstruction that makes noise.
    I r the king of the world!...or at least I get to stand on the roof and look down on the rest of yall
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  13. 11-02-2009, 11:51 PM #13
    dash
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    I think it's www.fantech.net ,not propellar fan blades,vanaxial,I think.
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