VIVOSUN 6" Inline Fan 240 CFM, Exhaust Fan for Home

Mine has gotten intermittent use since 2017. I just looked inside and cleaned out the dust and dirt. I hooked it up to a dimmer and it seems to work great. My only criticism is that it's loud, but if you just need good air flow, it gets very quiet with the dimmer. Good job Vivosun

I use this to extract heat from a portable A/C unit.I needed a fan with metallic blades due to heat. The heat it is exposed to will warp plastic fan blades. I was worried about the fan motor’s exposure to heat as well.This fan (in my application) is exposed to 145 degree internal duct heat for hours at a time which is right at the end of the motor’s advertised tolerance.It has been working without issues for over two months in Florida weather. I run it for as long as 6 hours straight, as needed.I use this fan to extract exhaust heat from a portable 9000 BTU A/C unit in my garage. This unit may also have use in a hurricane aftermath scenario (as in cooling a tent erected inside the house for sleeping (powered by a gas generator located OUTSIDE), if the power is out for weeks.This fan is hard mounted to a plate which I fabricated which seals the window opening completely. It can be removed from the window in less than 30 seconds. It also locks the window to help avoid entry from outside.I insulated the original flex duct with commercial grade insulation material used for A/C ducts in attics.The portable A/C unit is connected to the insulated duct, and then to this fan assembly at the window plate on the other end. The straight 4 foot duct run has two 45° elbows... this fan creates a vacuum in the duct to draw the heat outside better than the A/C u it could before.These portable A/C units are completely useless unless you facilitate the extraction of the heated air they produce. The uninsulated plastic exhaust ductwork they come with simply transfers all the heat the create right back into the room before it gets outside. It’s so hot in fact, it melts and distorts the window mount that comes with the A/C unit, allowing the heated air to literally blow back into the space you are trying to cool! It would heat and cool the garage simultaneously. Incredibly stupid and costly.To remedy, I insulated the exhaust duct from the A/C unit all the way up the the fan (at the window plate) in order to keep the heat in the duct, and not let it radiate back into the garage airspace. This fan sucks the hot air out.The window/fan mounting plate is made of 3/8 finish grade plywood, and painted with a two part epoxy, as to be waterproof and look nice.The fan is mounted to the plywood with a metal ring I fabricated using rivets, and it seals with a gasket. Control of the fan is manual, via the same power strip that supplies the A/C unit. The sound level is lower than the A/C unit’s noise output.The result: My garage can now reach 78°, with a 50% humidity level on a July day like today. Without the AC, the garage is 85% humidity, and 95°F.

I got this as a temporary replacement on a shop-made smoke hood for a formerly outside woodboiler that's now in a shed - used to remove the smoke cloud from opening the door to put in more wood. I originally purchased one of those medicinal herb inline vent fans from Amazon Outlets, but it fell apart after 3 days of intermittent use, this one has lasted since fall. It's somewhat underpowered for the this task (the original was 440cfm), but works well enough I've put off the decision of what bigger fan to replace it with, and might even leave it inline when that happens - after the building is closed up and insulated it'll need more power to keep the smoke stains off the ceiling. For now it does the job. The pipe connector directions were backwards from what I needed, but it was easy to make up an adapter with some leftover pipe and crimping pliers. It should hold up well in it's intended use, and it's much quieter than the air noise from the hood. This one's on a 15 minute spring timer, and only runs 5 minutes a few times a day so I can't tell how it'll hold up in full time use, but it should last a good long time if the motor bearings don't gum up. Worth a look, the only reason I don't say recommended is this isn't the way it's normally used so no opinion there.

Works very good. I initially bought the 4" which didn't really do anything at all, the fan in my fridge blows more air. However, after its demise(Vivosun was very easy to contact, quick reply and took care of it), I ordered this one, the 6 inch, which has at least 6 times the airflow of the 4" The only noise I hear is the air moving- which isn't loud, Can't really fault a product for the sound of air "whooshing".No rattling or anything as of now, I highly recommend not even trying to 4", a simple breeze outside can push air into the room with the fan on.everything about this is good quality, and lightweight. The cord is nice quality, as well as the item itself. I use this in a Room for an Exhaust, attached to a Flange that sucks air from overtop my "workstation". Does this Wonderfully. This may sound stupid, But I also used a "vaporizer" to blow "vapor" into the room( not necessarily toward the fan) and it caught all that and cleared the room within seconds.At the end of the day i am happy with my purchase, and has helped TONS with what i needed. I wouldn't hesitate to buy it again.

I bought these to blow air up through new vents that I installed over my wood stove in the basement. The basement would get way too warm and the upstairs was too cold. I cut new vents through the floor and installed new duct work with these fans just before the floor vent. They blow so much warm air upstairs it is unbelievable. My only complaint is that they are a little loud but my main floor is now a comfy 70 degrees F and my basement is still a cozy 75 F. Would definitely buy again.

Put the fan right against the duct going to into the 2nd floor. It was really very noisy. I see now 2 years later that there is supposed to be a piece of accordion duct between the fan and this metal piece that goes up through the walls. It ran for two years (bought it May 2024 and it is May 2026). The fan stopped and I looked here to see if there is a reset button. It wasn't much cost, but quitting in two years was unexpected.

Using this blower to move air through residential duct work to farthest room from HVAC. It has lasted for 3 years running 24/7 and makes that room temperature consistent with rest of the home. It is fairly quiet, but can still hear when running it (sounds like low level of white noise). Combined this with a pressure sensor at end of the main return trunk from HVAC and works like a charm. Strong buy recommendation!

This is a great secondary fan as it doesn’t have any speed controls, just plug and play. I also have a Vivosun intake/exhaust fan with a speed control on the way but this little fan is good to have for your exhaust/intake depending on your setup for your grow tent. Noise isn’t too bad and I’d say it’s right in line with a typical bathroom exhaust fan (hell it’s the same thing) so don’t expect it to be stealth but it’s not loud by any means. It pulls a lot of air to keep the tent cool so I couldn’t be happier. I purchased a 10x6 intake connection from Home Depot for about $20 and it gets the job done. Apologies for the crummy setup in the pic but it gives you the idea. This fan arrived in the Nick of time and I wanted to cool it ASAP as it’s a tad warm here today.Happy Gardening!

Hace ruidoo

This works excellently as an exhaust ventilation fan. It is powerful enough that it pulls the tent walls in very well, so it definitely moves a good amount of air.It is not terribly quiet, but it is also very powerful, so that is the trade-off. There is no built-in timer, but I used it with a smart outlet when I wanted to give it a break now and then.Recently, I have had it running pretty much nonstop for the last few weeks with no issues. Overall, I would highly recommend it if you need a strong inline duct fan for ventilation.

We are not satisfication this product

Cons:-Louder than I had hoped. Bought for boosting upstairs cooling in two storey house. Very noisy in bedroom. But think any fan that would move this amount of air would be noisy.-duct larger than 6”. Had horrible time getting to connect with other pipesPros:-pushes a lot of air. Can feel the air moving in entire room. Helps get cooler.-fan in noise but sound is more air than motor noise. Feels like pretty solid build.-have used for over a year still working great.Would like to state even with extra noise, would highly recommend this fan. This fan makes our story and half bedroom livable in summer and winter. Without the fan would not be livable. Cheap fix and sure it saves us energy.

This fan is good and removes enough air for my 3x3x6 tent, enough to give me some negative air pressure when tent is closed up. Have not noticed any grinding noise from the fan as some have reported yet. For longevity of the fan it's best to mount horizontally and not at an angle as this could cause some uneven wear on the motor. The fan was loud before hooking up a long enough duct which has silenced it considerably(sounds like a bathroom fan on low). This fan is great for the money and if you do not need to run carbon filter or speed controllers.