I have a 'Living Air' model. It works great. However, I much rather prefer open windows to circulate the air. Unfortunately that's only possible in spring & fall here in VA.
What I don't dig about these things is that they can pump too much O3 in the air. Too much )3 is not good not healthy. It takes some getting used to and to learn the desired settings on your unit.
http://www.ecoquestintl.com/dealer_p...s/classic.asp#
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