VIVOSUN 4" Inline Duct Fan and Carbon Filter with 25' Ducting Kit for Ventilation - 190 CFM, 8"x36"

Aggie29: I bought this for my garage for when I smoke cigars and when the fellas come over to smoke cigars. So far this works really good when I get a cloud of smoke. Usually have it on low but when there are multiple people smoking I turn it up. Works great. I have a additional box fan to help air circulate air and it clears out very fast. I would say buy this to help remove smoke in your smoking room.

United States on Nov 30, 2023

Matthew E Gong: I bought this fan to exhaust smoke and fumes from my laser cutter and it has worked perfectly for my purposes. I only have about a 5 or 6 foot run for this fan to pull out so I’m not sure how it would perform for longer runs but for me and my set up it works great.

Canada on Nov 29, 2023

Jason Morgan: Cannot hear it running

Canada on Nov 14, 2023

Cait: Good value for a fan like this, but the fan started rattling pretty bad around the 14 month mark. Around a year and a half in, it’s too loud to use. I may try a larger size this time so I can run it slower.

Canada on Oct 25, 2023

The Mean Guy: Love the control on this. Well made and worth the money

United States on Oct 22, 2023

MarcV: The fan works really well, however, it is not a quite fan, as advertised.

Canada on Jul 28, 2023

MERC: Yes, it's a little loud but compare the CFM's to others. This thing moves a lot of air! If the stink is a concern more than the noise, (Not that loud.) then this is the fan you need.

United States on Jul 05, 2023

HasmanHasman: I was upset about the noise level of the fan. That still holds, but am quite impressed that it has been running 24x7 for about three years now.

Original Review: Poor motor isolation

One of the 2nd floor bedrooms has poor air flow and is too cold in winter or too hot in summer. I installed this booster fan in the 6in duct in the basement feeding the room just before it transitions to an in-wall duct. My decision to select this product was:

+ the fan housing enlarges to about 10" diameter. This prevents the motor taking precious area and reducing the available cross-section area for air flow which effectively chokes the fan.
+ Includes fan speed control to tune the air flow
+ Large number of positive reviews on Amazon

The installation was fairly easy once you cut the galvanized duct to the proper length. Since my basement has a finished ceiling I had to install inside a closet where the duct was exposed. I removed a section of the duct that is almost the length of the entire booster fan assembly and secured with 6" hose clamps and sealed with aluminum tape.

Once running, it gives a good boost with a reasonable amount of wind noise at the...

United States on Jun 12, 2020

albionhome: I'm using this in a 4x4 grow tent. So far so good. Installation was easier than I made of it - so small problems were my fault to some extent, but vivosun don't help the diy challenged with any instructions,
Noise level is about as I expected. The tent is right next to where I sleep and I have no problem with the noise. Eventually there are some soundproofing hacks that will improve this further.
I'm using the fan for extraction. It creates negative pressure in my tent. A others have noted it literally sucks in the tent walls. Gotta be a good thing. So far the filter is keeping my home entirely odor free.
Overall a great little fan and the price actually is amazing compared to other products. Don't be scared to buy this if growing in a smallish tent environment.
I only wish vivosun could be a little more helpful with instructions - but not a biggie. Some of us are just a bit slow with practicalities.

Canada on Sep 20, 2019

Uriel: So, I'm using this fan as part of my custom built ventilation system in my basement room converted to a cigar room. I use it to suck the cigar smoke out through the window via the 6 inch hose and some ducting that goes out. I use it in conjunction with a duct fan that's hooked onto the HVAC ducting that acts as an intake fan for the same room.

What I like.

1. The speed controller comes attached. No need to purchase one separately.

2. Durable. I had a mishap where I accidentally dropped it from 7 feet to a concrete floor. No problems, turned it on and fired right up. It's plastic on the outside, but the fan itself has some good heft to it.

3. Powerful. This thing cleans out a room fast. You can watch the smoke going from the cigar a good distance away in the room as it goes right to the area of the fan.

What I don't like:

1. This thing is loud. But, that's the compromise. If you want a proper fan that will do the job, noise will be on the table. That all said, it's not loud enough to drown out conversation or music on a small speaker in the room. Further, it's powerful enough to run on low and still keep the room clear with one or two cigar...

United States on Dec 06, 2018