A:Answer Not sure if I just had a defective model, but mine made a really high pitch whining sound. It wasn't really loud, but it was so shrill I couldn't ignore it, and it gave me a headache after enough time passed. I really tried to ignore it, but it was too distinct. Also, I work IT and I'm often in server rooms. So I am no strange to various loud fan noises, so even I was amazed with how much this bothered me.