It is very quiet, does not bother too much people around. By cons, not enough for you to hear someone talking to you when you are "in action". I unfortunately found a little heavy, no more accessory (suddenly we can not use to pick under the bed for example), and the suction head is so heavy that does not make it very handy: Everything steel while another more kégère matter would do. The breath exits from the top of aspi: suddenly it is directly receives the figure, very unpleasant when it's hot ... I chose it for what it is noise at 66db, 3 db less than most other rowenta silent force. Acoustic 3dB less is the duplicate noise.
Pros: The price has dropped since my purchase, 150 euros is a very good price / quality / silence. I bought a Bosch Silence ..., a bit cheaper, I regret greatly. Rowenta released another still quieter model (50% more, to 62dB) to 220 euros, unfortunately still heavy. Cons: Too heavy, my wife bly every time she has to do the housework, and I it bothers me a bit of a drag as unwieldy thing.