Inline Duct Fan, 8-Inch 807 CFM with Temperature Humidity Controller, Quiet EC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics

I purchased this 4" duct fan to be used as a ventilation fan in the attic of a second story room above a garage. I am going to be using the room as a gaming/man cave room and wanted a ventilation fan that I could adjust the speed of the fan and be unnoticeable when in the room. This fan works perfectly for the limited space I had to install it in and with the asthetically pleasing LCD controller, this fan met all criteria I had and then some. It gives accurate readings of the air temperature and humidity %. It also, of course, controls the fan speed with 10 program or manually selected speeds. On the lower speeds, the fan virtually cannot be heard which is exactly what I wanted. The higher speeds are noticably louder for obvious reasons but it really moves some air which is the whole purpose of this fan. It has been running continuously for a month now and works flawlessly. Overall, excellent choice for a variable speed duct fan with all the bells and whistles and the best part is, it's a fraction of the cost of similar type fans.

I recently added the VEVOR Inline Duct Fan to my hydroponic setup, and I’m impressed with its performance. The 4-inch fan delivers an impressive 205 CFM, providing strong airflow that keeps my grow tent well-ventilated. It runs quietly, which is essential for my indoor environment, allowing me to focus on my plants without distractions. The integrated temperature and humidity controller is a nice feature, helping me maintain optimal conditions for my plants. It’s straightforward to set up, and having this control makes a big difference in ensuring my plants thrive. However, there are a couple of areas for improvement. While the fan is powerful, I found the controller’s sensitivity could be better calibrated; sometimes, it seems to react slowly to changes in temperature and humidity. Additionally, the fan could be a bit tricky to install in tight spaces due to its design. Overall, the VEVOR Inline Duct Fan is a solid choice for anyone looking to enhance ventilation in their grow tent or hydroponic system. Just be prepared to fine-tune the controller settings for the best results!

I snagged this combo during the Prime Day deals to run on my 60w CO2 laser for smoke extraction. I had been using a 4" online fan with a step down adapter I 3d printed. It worked, but wasn't the. Greatest and certainly wasn't quiet. This usit with the control panel and sensor was a nice upgrade. Mind you, it's primarily plastic, time will tell how well it holds up, but for the price paid, it's a sound investment. I mounted it behind the laser on the cart I built for it, connected right up with the ducting (separate purchase, same brand) and ran without any problems. I was impressed with the airflow, but moreso the lack of noise. It's literally 30% quite or more than the old style in line fan I was using. I don't think it's worth what it normally runs when not on Prime Day or a lightning deal, but when it is at those prices, it's a solid purchase.

This fan blew me away. I was making a cooling system for my laptop and wanted to run a 4 inch hose trgough the desk to the underside of my laptop. I purchased a random4 inch fan that was not very good so I decided to go larger. I happened to see this fan on sale and thought it may be too good to be true. Well it is not, i was going to go 6 inches but the 8 inch was less than other 6 inch fans so I bought one. The first time I turned this fan on I actually thought my laptop would lift off the desk. I coul only laugh at the amout of overkill for my needs I got. But hey overkill can be good. The little control unit that comes with it is a little chunky when trying to navigate but i like the fact its lit up and you can read it in a dark room. Tge speeds range from 1 to 10 and each one is a clear and progressively higher step in fan speed. I put a 6 inch reducer on my since I had 6 inch ducts alreadynand it was only going two feet from being mounted on my the underside of my desk through the desk to a cistom duct holder and stand for my laptop. I use a custom filter to try and minimize the dust being pumped into the laptop vents. It works really well and i never have to turn it up past 4 and it moves a lot of air. This fan is worth every pennyand it moves so much air that I buy a second one for my den to circulate the ac cool air since i only have one vent in a very large room.. Short answer is this fan is powerful and moves a ton of air!!! You will not regret your purchase and sometimes it half the price of other less powerful fans. I paid 25 percent more than what i paid for my 4 inch fan that wont even blow a piece of paper. The fan can get louder at around the 7-10 range but i was surprised at the quietness in relation to the amout of air being passed through. Over good fan!

Simply put, this inline duct fan seems to be as good as any of the competing brands, and makes one wonder why the others cost so much more. The only issue I had was a loud high-pitched whine that came from the controller box even when the fan was completely off. (Since the controller monitors temperature and humidity, it's never really "off.") Then I got around to plugging in the temperature sensor cable (which not all competitors provide or support), and the whine disappeared completely. I guess some circuitry was switching on and off to check temperature, and with no sensor it made an audible switching sound. In any case, this is a flexible controller and a fully functional fan, and I can't find any fault with it. And it has an anti-back-flow feature so outside air doesn't blow back into the duct when the fan is off. Mine is installed on the high-pressure side of the shop, and there's almost always prevailing wind against that side of the building, but no indication of any draft back through the fan. This can be very important, not only to prevent heat loss, but also to prevent possibly toxic dust and particulates that accumulate in the duct from being blown back inside. I will definitely pay attention to other products from Vevor.

Très bien pour le prix Qualité correcte

très bien sous tous rapports bruit aéro de soufflerie inévitable, ne rêvons pas mais globalement super produit. (J'ai acheté en même temps la version 700 m3 mais il fait bruit de bourdonnement dû au moteur en plus du bruit aéro pour le débit dont j'ai besoin, je préfère le 1300 m3 à faible puissance) petit bémol: je n'ai pas réussi à passer le boîtier de contrôle de Farenheit à Celcius...

"Già possiedo diversi prodotti VEVOR per il laboratorio e posso dire che sono una garanzia. Anche questo aspiratore dà un senso di solidità e di ottima fattura, a partire dalla scocca che è molto robusta e con una ventola potente. Con il display si regola facilmente la velocità, è semplice da installare e all'interno ci sono degli spessori che vanno applicati dietro la piastra per evitare vibrazioni. Lo consiglio vivamente!"

I bought this fan to replace an age old extractor fan in my attic space, removing moisture from the bathroom. The extraction power feels twice to three times as powerful which is exactly what I needed. Installation is easy I cut the plug off and put it into an isolator linked to the pull string switch. The controller is nifty, easy to use. The only feature I can't see in the controller is the option to have a trickle speed at certain temps, it's either on or off at the desired speed. For what I need though it's ideal. I just need to get a roof tile vent now to compete the job.

I received the inline fan very quickly, thanks for that. However when testing the fan I soon found out that the so called controller actually does not do well what it should do, it is advertised that it can be used well in a grow tent but unfortunately this is not going to work as it should. This fan controller that comes with it is actually nothing more than a temperature gauge with a termostat. There is nothing really adjustable in the thing just regulates on or off at a specified value. It should go to a low setting when the temperature is right in the grow room but it doesn't, it goes off. You don't want this in a grow room, you should always have negative pressure/fresh air in connection with odors etc. This fan looks nice with a nice controller but for growing purposes it is worthless, do not be fooled by the nice movies on youtube about this fan which is also sold under many other brand names but are all identical! I find it a pity because the service speed of this shop is fantastic but I feel cheated by the product. The fan is not broken, it just does not work as promised. This one is going back. I will buy a more expensive fan with a real controller.