I have been having this issue with my 2013 Model S since I have purchased my vehicle that I'd like to tap the TMC community about for advice. In my car, when the A/C runs there is an obtrusive "revving up" noise that starts when you turn on the A/C and stops the second you turn it off. You'll have to turn on then off the A/C about 2 or 3 times to have sound completely go away. It's tough to describe this sound but it is very noticeable in and out of the car and sounds like a turbine. Also my Model S has an extremely loud and obnoxious Fan noise that occurs most times when the A/C is running. This noise doesn't go away until the car is parked for about 10 or so seconds. Because of these two issues, it's really embarrassing pulling up beside someone at a red light because the noise is so ridiculous. Most days I just stop using the A/C completely and roll down the windows. I have asked my Service Center repeatedly about these noises and they continue to claim they're normal. They said they wrapped the A/C motor with noise dampener material but this hasn't done a thing. Am I crazy? I find this hard to believe and really think this is unacceptable for a $100,000+ car. My 1987 Chevy Chevette didn't sound this bad. My question to my TMC friends is, is this in fact normal? If not, any recommendations as to how to get the Service Center to acknowledge this or to rectify this issue?