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Thread: Absolutely silent exhaust fan in my bedroom?

  1. #1

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    Default Absolutely silent exhaust fan in my bedroom?

    I am planning to grow in the closet (90cm X 50cm X 160cm) in my bedroom. Is there any options to use exhaust fan which is absolutely quiet (not hearing at all if I am 2-3 meters away) ? If so, then what kind of fan I have to look into?

    P.S. I am planning to put this exhaust fan in top of my closet and the plastic straight pipe goes into chimney ... if its an ok idea

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    Keep away from cheap fans & oversize the ventilation system (if you can) & use a fan controller is the best advice I can give....
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    air movement will always make some sorta noise,
    id suggest lots of insulation and quality ducting to help,

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    Quote Originally Posted by M_C View Post
    Keep away from cheap fans & oversize the ventilation system (if you can) & use a fan controller is the best advice I can give....
    Thank you for your reply, but what do you mean about oversize ... bigger m³/h or this pipe size?

    English is not my native language ... are the terms m³/h and CFM same things?

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    that would be meters cubed per hour........ CFM is cubic feet per minute or ft^3/m ........ your conversions would be 1/3 for meters to feet, and 1/60 for hours per minute. Hope that helps.
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    Quote Originally Posted by Skunky n funky View Post
    that would be meters cubed per hour........ CFM is cubic feet per minute or ft^3/m ........ your conversions would be 1/3 for meters to feet, and 1/60 for hours per minute. Hope that helps.
    so, what would be the 120 CFM in m³/h?

  11. #7
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    To make mine quieter...

    I bought a fan larger than needed.
    Used acoustic ducting.
    Boxed the fan and filled the gaps with sponge.
    Use a variac.

    The fans on the Mars are louder.

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    How's the acoustic ducting makes it quieter?

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    Quote Originally Posted by THC Prince View Post
    so, what would be the 120 CFM in m³/h?
    about 200......... i think you really have to start hitting that search button on the top........ these are questions that are pretty common, and the answers really never change..... as far as the ducting it is for noise reduction.... basically it is insulation that absorbs the sound of the fans and air moving.

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  17. #10
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    Quote Originally Posted by THC Prince View Post
    How's the acoustic ducting makes it quieter?
    Most of the sound isn't from the fan itself, but the air that rushes through it. Acoustic ducting muffles the sound.

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