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]
Which one of the 2 instruments below would be the best to spend my money on?? They are close in price.
Larger Vane Selection
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.