Update... so last night turned up my machine to 7..then I started smelling a strange odor coming from the machine and heard a clunk noise ..odor disappeared once I turned the machine back down to 3 so did the noise ? So because of these reason I had to change my review ..never did I experience any of these issues with my first Dyson. My first dyson was a different size and model the heat n cold, at this point I'm not pleased at all.