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Using a 20" box fan on low/medium with one of these:
http://www.lowes.com/pd_552965-98-LOWESCTF12_4294761659+4294606878__?productId=50124672
Does wonders at getting rid of medium/large dust particles, skin flakes and pet dander. You can only use spun fiberglass furnace filters on box fans because they don't have enough static pressure to work with a microfiber filter. They'll generally overheat and have a short life from the motor burning out due to overheating.
I use one of these for the fine stuff:
http://www.iallergy.com/product_info.php?products_id=317
It has three filters (a pre-filter, an activated carbon filter for odor control and then a microfiber filter behind that.) I got mine for $20 at a second hand store and replacement filters were another $20. It moves a TON of air at the lowest speed and has made a noticeable difference in air quality in conjunction with the box fan.
http://www.lowes.com/pd_552965-98-LOWESCTF12_4294761659+4294606878__?productId=50124672
Does wonders at getting rid of medium/large dust particles, skin flakes and pet dander. You can only use spun fiberglass furnace filters on box fans because they don't have enough static pressure to work with a microfiber filter. They'll generally overheat and have a short life from the motor burning out due to overheating.
I use one of these for the fine stuff:
http://www.iallergy.com/product_info.php?products_id=317
It has three filters (a pre-filter, an activated carbon filter for odor control and then a microfiber filter behind that.) I got mine for $20 at a second hand store and replacement filters were another $20. It moves a TON of air at the lowest speed and has made a noticeable difference in air quality in conjunction with the box fan.