I bought one of these off Ebay a few years back at a good deal and it works nice for a small room/office. It is kinda loud on the highest setting but better than the window up freezing your a$$ off. They can be bought real cheap and are pretty nice. This one only went for $21.50 :tu
http://cgi.ebay.com/Norelco-Cigar-A...ryZ43510QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
http://cgi.ebay.com/Norelco-Cigar-A...ryZ43510QQssPageNameZWDVWQQrdZ1QQcmdZViewItem