Honeywell's Insight HEPAS Air Purifier seems to be doing a good job eliminating dust and odors from my finished basement family room.  I've been running it on a four hour timed mode and then again on a two hour run.  The "turbo" mode is loud so I haven't been using that speed.  The filters (two are included) are not washable and the replacement filters are expensive.  Wish at least one of them was washable.  Overall the unit is light and does seem to help with the stale air of my basement.