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"CFM" calculation question

Post in 'DIY and General non-hearth advice' started by johnn, Feb 28, 2009.

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  1. johnn New Member

    joined: Dec 8, 2008
    370 posts
    so.Ill
    Is it possible to compute approximate CFM output by measuring the size of the fans on a double squirrel cage and the motor size and rpm`````````s???

    supply houses are closed now,,and there seems not much new going on,,,anybody??
    johnn, Feb 28, 2009
    #1

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  2. TMonter Minister of Fire

    joined: Feb 8, 2007
    1,237 posts
    Hayden, ID
    Not really unless you know the wheel characteristics of the fan. Do you have a fan model number?
    TMonter, Feb 28, 2009
    #2

  3. johnn New Member

    joined: Dec 8, 2008
    370 posts
    so.Ill
    I may be able to have son pull fan ass. off insert downstairs,( same manufacturer). The rating tag on motor on the unit upstairs is hard to read, however I believe it only contains motor info.My leg is kinda BROKE, so I will have to rely on my son to do the leg work for me. I`ll post later with info.. Thanks
    johnn, Feb 28, 2009
    #3
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