A little noisy. My smoke alarm 2 rooms away goes off, so it is really not as effective as the range hood I bought almost 40 years ago. The filter gets dirty easily and I don't like the fact that it is not washable. I was told by the salesman that I could not get a more powerful fan or filter. I wouldn't mind paying more for a better product, one that filters smoke and grease effectively, has a washable filter, and is a little quieter.