Fan works well for blowing air out of a 2x2 grow tent. Helps dispurse the heat and humidity from a humidifier. Works well in s 4x2 its keeps it around 76deg 45% humidity.

The vivosun fans are reliable and not too noisy. They are slightly more powerful than your normal bathroom fan and just slightly louder. Great bang for the buck, it's quiet and moves alot of air for its size.

Not bad, but not whisper quiet. Very satisfied with the fans. Most definitely worth the money.

Fan is very cheaply made and the two i bought broke the same exact way. Zero response from vivosun support via email, and calling their number. Will not ever buy a vivosun product again. Overall it's cheap and if you need something for a short time at...  Read More

Every time i reassemble it, it comes back apart within a few days. I am in the room above the crawlspace where this fan is and it sounds like a diesel truck.

Tried plugging into a different outlet to be sure. Still nothing. After about 2 months it's just stopped blowing with any power.