733 purchased 2003 for bedroom use, doing well. 293 purchased 2004 for barn use to keep bugs off horse, continuous use from May or June to September or October every year. Front bearing started making noise in 2010 so I lubed it even though Vornado says it does not need it, and runs fine now. Maybe the model that year did not have bearings, or the wear is an anomoly? A second 293 just purchased July 2011 for our second horse and it does seem to have much more power. I got tired of fooling around with cheap fans so that why I get Vornados.