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  1. #14
    Join Date
    Feb 2003
    Location
    Huntsville,AL
    Posts
    4,125
    so, after you measure this, what are you going to do?

    why not just do that? work on the solution, not just measuring how much problem --

    eg: seal all the ducts & cracks with mastic
    have dampers in the duct take-offs from the trunks
    adjust dampers until all rooms are +/- 3F just after blower shuts down

    it takes some patience to set dampers --
    & may need different settings for summer & winter




    [Edited by cem-bsee on 10-16-2005 at 10:19 PM]
    harvest rainwater,make SHADE,R75/50/30= roof/wall/floor, use HVAC mastic,caulk all wall seams!

  2. #15
    Join Date
    Dec 2003
    Posts
    69
    Which one of the 2 instruments below would be the best to spend my money on?? They are close in price.

    http://store.yahoo.com/newadv/ke41bynknewm.html

    http://www.ambientweather.com/ex40heducfmv.html

  3. #16
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,248

    Thumbs up Larger Vane Selection

    Originally posted by collins8
    Which one of the 2 instruments below would be the best to spend my money on?? They are close in price.

    http://store.yahoo.com/newadv/ke41bynknewm.html

    http://www.ambientweather.com/ex40heducfmv.html
    I prefer and have used the
    Extech 407114 Heavy Duty CFM Vane Anemometer
    which has a 2 3/4" Diameter vane.

    TWO people would be needed if you used a 'home-made flow hood'.

    I believe that the larger vane would provide a more accurate reading with 'inherent averaging' due to a larger 'sampling area'.

    Therefore, a 'home-made flow hood' would not be a necessity in making an initial total air flow assessment.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

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