Just learned a valuable lesson about exhaust fans

I finally received my Nidec TA600dc fan. It is 12vdc 2.0 amp. Rated at 235 CFM

I installed it, and man did it really move some air. I was impressed

However it was loud. Louder than I could tolerate. Even though sound is not an issue, this was actually annoying.

Now luckily I have numerous power adapters

I had to adjust the speed of this fan, but wasn't quite sure how.

After trying a dimmer switch and failing, I finally decide on a universal ac/dc power converter which has multiple voltage settings 3v,4.5v,6v,7.5v,9.0v,12v

After installing this it slowed the fan down to where the fan is a quiet hum and still maintain a high CFM

Anyway the lesson i learned is that even though there are cheaper exhaust fans out there that put out a great deal of CFM.

Fan speed is a must. Those High Rpms are just too noisy, unless you buy a ultra quiet one

I hate the noise also. Can Fan here

hey guys how loud are 150 cfm or 200 cfm fans anyways? i need to buy one and wont if its annoying!
Wat can u compare them to, a bathroom exhaust or a washing machine>

the larger the fan the more air it moves and less noise if you get a small fan that moves lots of air it needs to spin alot faster so small high cfm fans are noisy

just get a fan controller, thats what normal folks do