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  1. #1
    Join Date
    Sep 2004
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    there are alot of old and new fan motors out there and i was wondering what is a good range for cfm for:

    cooling speed, low and high fire fan speeds, as well as the continuous low speed fan for circulation

    thanks in advance


  2. #2
    Join Date
    Mar 2006
    cincinnati, ohio
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    That depends on the size of the unit
    Knowledge comes with experience

  3. #3
    Join Date
    Aug 2002
    Office and warehouse in both Crystal River & New Port Richey ,FL
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    You need a magnehelic or manometer to test the ESP,then the fan data chart(s) for the air handling side ,to set the proper cfms on every job,when they have PSC motors.

    VS setup properly is a lot easier.

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