centrifugal fans are very quiet. it's there biggest benefit.
you can also hand the fan by bungees which will absorb the vibrations

I find using plastic ducts absorb a lot of sound. I sleep in the same room as my grow so
I would know. The aluminum ones make the most noise.

You can also considering blasting metallic when ever the fan is on.
Your neighbors will be so distracted by that, they wont care about fan noises
harris7 Reviewed by harris7 on . air noise question I'm in the process of moving my growroom. We have a good location for the new one, the only problem is the proximity of a couple of open windows (on warm days) about 30 feet from the growroom. My question is concerning exhaust air noise. I'm going to be using a 1500 cfm fan to exhaust warm air through a window opening. The actual window frame itself is going to be boarded up and I'm making a wood box to surround the open window portion. The wood box will have a 12 inch hole cut in it to mount Rating: 5