Bought this fan years ago [about 17 yrs] to be used in my basement which needed air circulation and had very high humidity. Used it that summer in my bedroom and when weather became cooler, moved it to the basement. It has been there ever since, though I do turn it off 2-3 times a year to clean the blades and remove any dust that might have accumulated! Have purchased 3 more over the years [for dogs' room, living/computer room & my bedroom. They are quiet, efficient and in my estimation, the very best fan on the market that is reasonably priced and lasts for years!