VIVOSUN R6 6 Inch 390 CFM Inline Duct Fan with Variable Speed Controller HVAC Blower for Ventilation

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 smokers. In all, this being part of my ventilation system saved me hundreds of dollars by not buying a rabbit, or any other overpriced smoke eater. Good price, quality fan.

I bought 2 of these kits since I caught one on sale. I do not regret buying either kit. The fan instantly helped me keep my temps and humidity in check in a small room and a 5x5 tent. Even on low the exhaust fan sucks in the walls of my tent (I need to add an inlet fan to fix this). The carbon filter does a great job at keeping the smell down in both the room and the tent. There is literally no smell at all on the other side of the door or tent. The only 2 things I could complain a little about is that the fan is a little loud and they should have included a 3rd hose clamp in the kit. Even on low, there is no way someone is going to walk in a room with your tent and exhaust running and not wonder what the noise is. Overall this is a great kit and well worth the money. Don't expect it to be whisper quiet and pickup an extra 6" hose clamp before you try to install it and I think you'll be very happy with this kit.

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 floor register. With the fan control set at about 1/3 the speed range it gives a good flow (about a 12ft rise to the 2nd floor bedroom register). The downside is that there is a humming noise transmitted throughout the entire galvanized duct that is quite noticeable. The noise does not carry to the second floor, but is quite audible throughout the first floor and basement where all the registers are connected via galvanized ducts. You can hear the hum under the1st floor where the ducts run under the floors. I measured the sound levels with my phone: 1ft from the booster in the basement: 23.9db (fan off) / 43.2db (fan on) In the finished area of the basement (home theater): 29.1db (fan off) / 33.5db (fan on) 1st floor dining room (right above the duct with the booster installed): 20.9db (fan off) / 48.0db (fan on)

I’m thoroughly impressed with the VIVOSUN Variable Speed Inline Duct Fan! From the moment I set it up, it was clear that this fan is built for performance. The brushless motor and durable plastic blades make it not only efficient but also incredibly quiet—at 34 dB, it’s nearly silent while running. Whether you're using it in an industrial, household, or horticultural setting, it delivers optimal airflow, reaching up to 390 CFM. One feature I love is the stepless speed controller on the power cord. It gives me full control to adjust the airflow and noise level, so I can tailor it to my needs. The compact design (measuring only 8.7 x 11.8 x 8.7 inches) fits perfectly into tight spaces, and installation was a breeze thanks to the included bracket and removable duct ends. This fan is incredibly versatile and does the job exceptionally well. If you're looking for a reliable, efficient, and quiet ventilation solution, I highly recommend this product. It’s the perfect addition to any ventilation system!

Muy buen producto, se siente de buena calidad, todo viene bien empaquetado y con instrucciones muy fácil de ensamblar, el ventilador el algo ruidoso, pero funciona excelente.

Rohr Ventilatoren kaufen ist gar nicht mal so einfach. Bei allen steht quasi dabei, sind gut und andere schreiben die seien Müll. Mein ziel war es, eine Absaugmöglichkeit zu schaffen für meinen Werkzeugkeller. Ein Staubsauger zum absaugen ist schön und gut, aber das W/m³ Verhältnis ist eher schlecht. Zudem wird die luft nicht ausgetauscht und ich stehe hier im Keller in meinen Schweißdämpfen. Nicht grade geil. Wie man sehen kann habe ich den Ventilaor mit der beigelegten Wandhalterung montiert (4x 5mm, max 10mm kopf. Nichts inkl. Bei mir 5x60mm Vollgewinde Flachkopf schrauben) Den Fensterflügel habe ich durch eine Sperrholzplatte ersetzt. Die Verarbeitung ist ganz gut. Das Gehäuse und der Impeller sind aus Plastik. Die Materialstärke ist aber relativ dick. Jedenfalls mache ich mir keine Sorgen, dass durch die Schellen das Plastik zerdrückt wird. Die Lautstärke ist ok würde ich sagen. Für mich im Werkezgkeller als Absaugung kein Problem, aber wenn der als Gewächshauslüfter genutzt wird...wäre mir egal wo in meiner wohnung zu laut. Aber von der Materie habe ich keine ahnung, wo man so was aufstellt. Bei dem seperat gekauften Schlauch waren 2 Schellen dabei, beim Motor oder den Trichtern keine. Nehmt welche die bis 210mm oder mehr gehen, das erleichtert die Montage.

Tip Top, der Filter ist nur ein wenig schwer aber sonnst alles gut

Amazing bang for your buck

This Vivosun 4 inch carbon filter exhaust system is an excellent product. I have been running the this unit for 49 days on a 18 hour timer cycle, then 12 days ago I switched it to a 24 hour always on cycle. I have absolutely no issues at all. Installation was easy and it only took about 10 minutes to get it mounted and flex hoses connected. . The suction of this unit is really good and if It didn't have the adjustable speed control the sides of my tent would be sucked in all the time. The adjustable speed control is a must for those growing in a tent. All in all this is an excellent unit at an excellent price. Well done VivoSun.