Recommendation for a whole house fan? - Page 2
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  1. #14
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    Bob Greenheck must have been born in the 20s. The smart consumer knows how to look at about 8 octave bands and pick which fan is best for him/her.
    The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.

    http://www.ductstrap.com/

  2. #15
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    why/how would a 'consumer' need to evaluate octave band data?

    overall values are weighed against a known reference point.
    (ref. various human response to sound lit.)

    more than enough info, no?

  3. #16
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    Well why would they want to compare dBA over multiple octave bands and consider exponential differences?



    The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.

    http://www.ductstrap.com/

  4. #17
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    "consider exponential differences"

    please explain further.

  5. #18
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    consider the magnitude of a decibel increase
    The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.

    http://www.ductstrap.com/

  6. #19
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    again, what is wrong with comparing overall levels (dBA)?

    is a home owner going to assess tonal emissions with 1/1-octave sound ratings?


  7. #20
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    Well I just think giving them 8 sets of numbers to compare and deciding if they think rumbling is worse than whining is a little much.

    Maybe give them a simple number to use, sort of like how SEER seems easier for them to grasp than COP
    The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.

    http://www.ductstrap.com/

  8. #21
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    good luck getting a home owner to grasp octave band data.
    single number ratings are just fine for equipment emissions.
    universal and reliable.


    still don't get the: "consider exponential differences"

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