What up. Sorry for the delay on the response. I started working all sorts of shit hours and haven't been logging on as much as i used to. As for the crystal king fan,...I haven't been using it. It still works fine (still has a slight whistle), but it's jst too noisy for my apartment. It def moves air (kinda like a jet engine). If your looking to buy a fan and noise isnt a factor than i'd say go for it. I got mine for around $200 on ebay. If noise is a factor than try the hvac duct fans. Sizes run from 3'', 4'', 6'', 8'' and maybe 12''. They are less powerfull but more silent. Either way good luck. Peace!