Does anyone have one of these, or at least heard of anyone having any experience with these?

I am thinking about purchasing one of the reconditioned unit, but am not sure if the units really work.

The most questionable aspect in my mind is that it does not circulate the air like a traditional HEPA suck-and-blow fan-filter unit does, and therefore think the effectiveness is diminished.

This year has been particularly bad for allergies.