This one is much quieter compared to my previous HP02 and HP04 I love my older purifier, I still use it, now it’s just being used in the basement. I bought the new one because I wanted something more stylish and something that what is a bit quieter. This was it! The Dyson link app is amazing, and a fan itself is beyond cool (no pun intended). I love the screen, it gives you a lot of insight about your air quality, but the app is a lot more helpful. While Dyson is not cheap, in my opinion it’s worth every penny. The ability to have a fan, a heater and a purifier is just amazing. Dyson’s customer  service is also amazing. I am a proud Dyson owner.