On Thu, Jul 14, 2011 at 4:48 AM, M. Adam Davis wrote: > That depends on how much is "enough". I haven't done any > measurements, but you can certainly feel the breeze from it even on > low with a 3M Filtrete premium filter. As the filter fills up, > though, the air volume with be reduced. There's certainly a tradeoff > between noise and air flow but in a really dusty environment, more air > flow is not always better - it pays to use the fan to get dust out of > the air, and use a broom or vacuum to get dust that's settled onto the > floor and other surfaces. > > In my experience I can leave it running in a medium sized room (say > 12x10x8 feet) full of dust from sanding drywall compound and within 5 > minutes the vast majority of the dust is gone, though it will take a > bit longer before it's as clean as the rooms you aren't working in. I > usually just leave it running all the time when I'm working, though, > and dust simply isn't an issue. > Hmmm. I'm thinking of using one of those pleated allergen filters though, such as this one: http://www.canadiantire.ca/AST/browse/3/HouseHome/1/HeatingAirConditioning/= FurnaceFilters/PRDOVR~0643516P/Garrison%252BMERV%252B11%252BElectrostatic%2= 52BFurnace%252BFilters%25252C%252B3-Pk.jsp?locale=3Den Pleating should allow more surface aria possibly for better airflow, but I'= m still not sure if the fan can pull enough air through to make it worth it. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .