4 Inch iPower GLFANXINLINE4 190 CFM Inline Duct Ventilation Fan for Grow Tent HVAC Exhaust Blower with Grounded Power Cord

Tony: Died after a 10 uses venting a very hot kiln.
Worked pretty well for a while, but the application I used it in was probably a bit extreme for this fan.

United States on Mar 29, 2023

Chris: This fan is about half the price of a Vortex with equivalent properties, so it's a pretty good deal. I do not use this fan continuously: only a few minutes each day to vent smoke out of my house - either cannabis or tobacco - and it performs perfectly. While I have seen reports of this fan not doing as well as its Vortex counterpart with continuous operation, as an occasional exhaust fan it works wonders.

Canada on Mar 02, 2022

Evan HildrethEvan Hildreth: I installed this on the duct going to a far bedroom that never got enough heat or A/C, and it really helped! It works much better than the "register booster fan" I tried. Some notes:
- To install it, I removed a section of round duct and replaced that with a section of flexible aluminum duct with the fan in the middle, using 4 worm gear clamps to secure the flexible ducting to the fan and to the ends of the existing ducts.
- The flanges on the fan aren't very wide, I found it much easier to attach the flexible duct to the fan before putting the fan into place.
- I initially screwed it to a floor joist but that made the floor "hum"! So I screwed it into a basement concrete wall and now it's very quiet.
- The only place I hear it through the floor register in the room it's blowing air into, but it's no louder than running a fan or space heater in that room.
- I used a "CS-TS0 miniature current switch" so the fans turn on and off with the furnace.
- I also got the "iPower Exhaust Fan Speed Controller" but I found it to be unnecessary.

Canada on Sep 03, 2021

Ty: DIRECTION OF AIRFLOW POORLY MARKED WITH ARROW STICKER DOESN'T TELL YOU THE DIRECTION. SHOULD BE THE SYMBOL OF ARROW GOING THROUGH A CIRCLE WHERE THE CIRCLE REPRESENTS THE OPENING OF THE VENT.

Canada on Aug 03, 2020

E. A. Jacques: I use this in my 4x10 grow room to help control the humidity, regulate the temperatures and move some air. I do not use it with a carbon filter as the smell is not an issue for me. I use it with the iPower speed control, which I recommend. I have it on a timer so I can adjust when and how fast it runs based on the readings of the hygrometer in the grow room.

As for the noise level, well I have mine in an adjacent room that is used for storage. I have a flex hose that goes through the wall to an intake vent and another hose that goes to an exhaust vent in the window. So being as it is in an adjacent room, the noise level is not something I really notice or care about really. That said, if you were to use it in say, a basement space and were you intend to spend time, the noise level would be fine I think. That is really a matter of personal tolerance. I would say the noise level is "expected".

It is a very well made fan though with a smooth operation and it moves a lot of air for sure. It will work very well in a 4x4 room, but I would definitely recommend getting the speed control to help regulate how much air it draws. It also depends on how much you seal the...

United States on May 05, 2019

Mark: I bought this for my 32x32x62 Grow Tent and I couldn't be happier. I was relying on 3 crappy $6 6 inch Lorell fans to do the ventilating and create a breeze on my marijuana plants. This wasn't working well, I cheaped out on fans because I was already investing over $400 at once to get this grow started. I bought this fan a month later when the R/W/B Spectrum settings needed to be set to 100%/100%/100%, this brightness increase came with an overall temperature increase. My tent was reaching 82 degrees fahrenheit and with humidity levels of 40%-50% the plants were suffering from heat stress. This was in an air conditioned room set to 64 degrees, and still it was reaching those temps. I was uncomfortable due to the cold, and my plants were still uncomfortable from the heat.

Now that I have this inline fan, I stuck some ducting down to the lamp's heatsinks to suck heat directly from the light, while the majority of the ducting is still sucking air from the tent and drawing in a nice breeze through the screens on the bottom of the tent. My temps never go higher than 75 now, averaging 72, and thats with my room now at 68 degrees. I used 2 of those 3 fans to blow directly on my 2...

United States on Jun 24, 2018

maxime allen: Je l'utilise à basse vitesse pour sortir l'humidité d'un vide sanitaire et avec un té et des volet à la sortie je recircule une partie de l'air dans le vide sanitaire pour sortir environ 30 cfm à l'extérieur. Il tourne depuis 2 ans 24h sur 24h, 7 jour sur 7 jour. Je ne l'entend pas dans la maison, mais dehors lorsque je passe près de la sortir d'air je l'entend un peu. Le taux d'humidité dans le vide sanitaire est passé de près de 100% à environ 60%. En laissant toujours les soupiraux fermé(petites fenêtres).

Canada on Jun 18, 2018

Steve: Bought this as an upgrade to the exhaust fan on a Chinese K-40 Laser Engraver. Big step up from the cheesy fan they include with those things. It moves plenty of air to keep my workshop fume free. In fact, you have to be careful when cutting small lightweight pieces like cardboard. The first time I tried, as soon as the piece was cut free, it would get sucked out the exhaust and shot outside! I may add a speed controller when cutting those types of material.

It's reasonably quiet during operation. I barely notice it, and it's hard to even hear over the top of other shop noises. It looks pretty durable, but I only run it a few hours a week so I can't judge it's long term reliability yet. The case is all metal construction and I think the impeller is too. Comes with an attached mounting plate so you can bolt it down. Clearance around the housing can be a little tricky though, so don't expect to just run a few drywall screws through to hold it down.

If you're looking for a laser exhaust, I highly recommend this one.

Update 10/2020: 2 1/2 years later and still going strong. There is a pretty thick film of soot built up inside of it, but so far it hasn't skipped a...

United States on Mar 18, 2018

adamczar: Because you can buy like six different things on this one page, from fan to ducting, it's hard to know what you're actually reading about in these reviews. This review is for the 4 inch 190 CFM fan. I got it as an experiment to replace a 50 CFM bathroom fan. I expected it to be nearly four times as strong -- certainly twice as strong, at the least -- but it functions about the same and is about as loud even when mounted with straps in the attic above. I'm going to keep it because I hate going up into the attic, but it certainly does not "feel" like it's pulling 190 CFM.

United States on Mar 11, 2018

Wharfe: Seems like good quality. I went with this one over some others as this one said UL Listed in the description. I don't really see any UL stickers on it, so I'm not really sure now. If it's not, I would have got something a bit cheaper. Anyway, I like the quality appearance. It seems fairly quiet and is smaller than I thought it looked in the picture! Hope to enjoy it for a long time to come.

Canada on Jan 12, 2018