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Part of the job of a bathroom fan is to generate noise to mask the other noises generated inside a bathroom. A moderately noisy fan gives the person in the bathroom some privacy and gives others in the vicinity a less objectionable soundtrack. Obviously the ideal fan is quieter than an F14 taking off but that doesn't mean the quietest fan on the market is the best fan (unless your house is already well-soundproofed or you like to listen to your guests pee or something). When I added a bathroom in my old house a few years ago I couldn't understand why there were so many high-priced fans marketed for how quiet they were. I thought, "sure, a few customers who never thought it all through may want a silent fan, but shouldn't the people who make and sell bathroom fans for a living have figured it out by now?" Now I see: A perfectly good bathroom fan goes for $25, but there are rich people who'd pay 10 times as much for a "top of the line" fan. The top of the line fan doesn't have ...