I have it in the bathroom for a month with daily use. I am very satisfied with its performance and quality in relation to its price. I think its noise is below average. It can be heard but it is not annoying.

Quite noisy but does the job. I have it as a warehouse ventilation so it can work for half a day. It definitely withstands.

I installed it here about three months ago, on the wall in the boiler room for ventilation of the space, and so far it works (about 10 hours a day) without any problems. It looks good.

It is incredibly good!!!
Almost silent and after placing it in my bathroom, the entire atmosphere changed for the better...
The best purchase I have made...

Very good and high-quality product, from the back side it has a flap that opens when it is turned on and closes when it is not working, this prevents the entry of insects. It has a power indicator light, it is beautifully designed and above all, it is powerful. The noise is subjective, when I tested it alone to see it, it didn't make any noise, but when it is installed, the intensity may increase slightly due to the sound that will be generated inside the tube or from any resonances, but overall it is quiet.

Excellent product at an incredible price. The noise it makes is not negligible, but it is the same as in much more expensive models. It works continuously day and night in a 35 sqm laboratory-office for 15 days tirelessly and does a very good job.

1) It works...
2) It's not quiet, but none of them are.
3) For the money, it's perfect.
4) It also has a filter to prevent dust and particles from entering