AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller – Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics


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AC Infinity, CLOUDLINE S4 Inline Duct Fan 4″ with Speed Control AC Infinity, CLOUDLINE T4 Inline Duct Fan 4″ with Thermostat Control AC Infinity, CLOUDLINE S6 Inline Duct Fan 6″ with Speed Control AC Infinity, CLOUDLINE T6 Inline Duct Fan 6″ with Thermostat Control AC Infinity, CLOUDLINE S8 Inline Duct Fan 8″ with Speed Control AC Infinity, CLOUDLINE T8 Inline Duct Fan 8″ with Thermostat Control
Model AI-CLS4 AI-CLT4 AI-CLS6 AI-CLT6 AI-CLS8 AI-CLT8
Duct Opening Size 4″ 4″ 6″ 6″ 8″ 8″
Airflow 205 CFM 205 CFM 402 CFM 402 CFM 807 CFM 807 CFM
Noise 28 dBA 28 dBA 32 dBA 32 dBA 39 dBA 39 dBA
Power Usage 21 W 21 W 38 W 38 W 78 W 78 W
Controller Precise inline speed controller with eight speeds, easy on/off, and power cycle memory. Fully programmable temperature and humidity controls with timers, alarms, and adjustable fan speeds. Precise inline speed controller with eight speeds, easy on/off, and power cycle memory. Fully programmable temperature and humidity controls with timers, alarms, and adjustable fan speeds. Precise inline speed controller with eight speeds, easy on/off, and power cycle memory. Fully programmable temperature and humidity controls with timers, alarms, and adjustable fan speeds.
EC motor with PWM-control for a quiet and energy efficient performance
Mixed flow design utilizing stator blades for high static pressure environments.
Includes everything needed to mount the inline fan and power it through an outlet.
Application Various ventilation projects including hydroponic grow rooms and tents. HVAC applications involving boosting airflow and exhaust. Cooling AV equipment rooms and closets. Various ventilation projects including hydroponic grow rooms and tents. HVAC applications involving boosting airflow and exhaust. Cooling AV equipment rooms and closets. Various ventilation projects including hydroponic grow rooms and tents. HVAC applications involving boosting airflow and exhaust. Cooling AV equipment rooms and closets. Various ventilation projects including hydroponic grow rooms and tents. HVAC applications involving boosting airflow and exhaust. Cooling AV equipment rooms and closets. Various ventilation projects including hydroponic grow rooms and tents. HVAC applications involving boosting airflow and exhaust. Cooling AV equipment rooms and closets. Various ventilation projects including hydroponic grow rooms and tents. HVAC applications involving boosting airflow and exhaust. Cooling AV equipment rooms and closets.


Weight: 2.74 kg
Dimensions: 34.54 x 28.7 x 24.89 cm; 2.74 Kilograms
Brand: AC Infinity
Model: AI-CLT4
Colour: Black
Colour: Black

275 Responses

  1. Anonymous says:

     United States

    Amazing I was looking for a fan that was not loud as my tent sits right next to my bed so I needed something that was quite and I have found it in this ac infinity cloud line love this line super quiet and energy efficient the automated setting is amazing this is now my go to line for tents booster and ventilation well done AC infinity

  2. jamphel says:

     United Kingdom

    Easy to install ,very quiet , run perfectly
    Very good quality

  3. Anonymous says:

     United States

    I bought this fan when I bought my cloud lab 632 and was already impressed by the quality of the products. Assembly was incredibly simple. The t4 model comes with a control panel that allows you to adjust your desired temperature range and humidity. The one other feature I appreciate is how quiet it is. I also did a few test on how well the sensors from the panel worked and they were well above par. The one drawback I have is the ability to drop temperature in my tent(however that is due to my obnoxious 2000w light). Honestly it’s an amazing fan system for the price. Going to buy another to help out with the temperature issue, although I’ll go with the T6 this time. But no regrets!
    *edit* after replacing the light with one with less output the temp is right where I need it to be

  4. Anonymous says:

     United Kingdom

    Easy to install and set up the low and high temps and humidity alarms. Highly recommend for a fully controlled climate and environment.

  5. Anonymous says:

     United States

    I had a different inline fan system that was so loud it would wake me up at night. I upgraded to the AC Infinity CLOUDLINE T4 and love it. It’s quiet, it’s easy to install and the temp/humidity monitor has saved my plants a few times. It’s been running non-stop for about a month now and I have had absolutely no issues.

  6. Anonymous says:

     United States

    Hey all, novice grower here. I needed an additional fan, did not plan on replacing the fan I had as the one I was using was loud but still worked, and I just needed another one. After using the AC infinity I decided to replace my first one and buy 2 ac infinity units as it’s such an improvement, seriously, this is how all fans should be made. I spent my first year growing stressing about my inline fan, keeping humidity and temp in range, and the noise from a previous inline fan. I was constantly checking my humidity, speeding up and slowing down the speed to keep the humidity in range. I cannot tell you how much time and trouble this unit has saved me. I got a simple 6 inch inline fan with temp/humidity control. It’s damn near silent at lower speeds, I leave mine running 24/7 and forget it’s on. I set mine at 62% humidity, and literally haven’t touched the controller for a couple weeks because I haven’t needed to. ONE THING::: Read the instructions – a lot of the complaints I see have to do with programming of the temperature control. It’s not super intuitive.

  7. Anonymous says:

     Australia

    It a quiet fan at low/medium speed, and at full speed it does push some air with some noise as expected. At level 10 is louder then they suggest.
    Is it worth 400 dollars to Australia, yes, but could be cheaper for a fan. Dont know if it will last a long time, only time will tell.

  8. RaeR00kgrlsvxvl says:

     United States 🇺🇸

    First time grower! Absolutely amazed at how easy this was to install and use. Extremely quiet and user friendly!

  9. Soon44Rmauplytt says:

     United States

    What a delightful setup to put together and it’s so effective it’s literally has put me at ease with knowing the climate in the tent will be controlled as I’m doing other things!

    What a delightful setup to put together and it's so effective it's literally has put me at ease with knowing the climate in the tent will be controlled as I'm doing other things!

  10. Anonymous says:

     United States

    I love how well this lil beast works! There price is amazing for the quality of the fan and control system. I’m running ac infinity for all of my ventilation systems

  11. Anonymous says:

     United States 🇺🇸

    Great product. Does what I need it to do and does not take to much space in the grow tent perfect product.

  12. FaustoMasters says:

     United States

    I got home today to open up my AC affinity and it looks used There’s dust inside and on the cords look like they it’s been re-wrap the packaging doesn’t look right the whole thing looks like it was returned. Something brand new that’s been in the box on the shelf should not have dirt or dust inside of it in on it I need Amazon to contact me about this. I have not plugged it in or use it yet but I’m still gonna give it a review.

    I got home today to open up my AC affinity and it looks used There’s dust inside and on the cords look like they it’s been re-wrap the packaging doesn’t look right the whole thing looks like it was returned. Something brand new that’s been in the box on the shelf should not have dirt or dust inside of it in on it I need Amazon to contact me about this. I have not plugged it in or use it yet but I’m still gonna give it a review.

  13. MamieAhMouy says:

     United States

    I am replacing all of the exhaust on all five of my grow tents with one of these in fact this should be the industry standard that kind of control it gives you is beyond anything else and of course a DC motor a lot quieter than an AC, if you care about what you are growing in your grow tent this is the in-line exhaust you need

    I am replacing all of the exhaust on all five of my grow tents with one of these in fact this should be the industry standard that kind of control it gives you is beyond anything else and of course a DC motor a lot quieter than an AC, if you care about what you are growing in your grow tent this is the in-line exhaust you need

  14. billy2004 says:

     United States

    Nice product. Works great and does exactly what it needs to do without issues. I’ll likely buy this product again.

  15. Anonymous says:

     United States

    This has turned my tent into a self-aware super tent that keeps my babies happy! Had it up and running in 30ish min. I felt comfy with the controller after an hour. It was the stone age before I got this! Shipped fast as well.

    This has turned my tent into a self-aware super tent that keeps my babies happy! Had it up and running in 30ish min. I felt comfy with the controller after an hour. It was the stone age before I got this! Shipped fast as well.

  16. Marcelino10S says:

     United States 🇺🇸

    Wonderful stuff. Works great, nice and quiet, Keeps everything exactly in the range I want it at. Can’t ask for more.

  17. SethGoldsmith says:

     United States 🇺🇸

    If you use twice as much fans as you need BTUs you can keep them down on speed and they’re very quiet!

    If you use twice as much fans as you need BTUs you can keep them down on speed and they're very quiet!

  18. maya801 says:

     United States 🇺🇸

    This product was EASY to install. It is highly efficient and effective. I have a electronics degree and a monkey could install this equipment!

    This product was EASY to install. It is highly efficient and effective. I have a electronics degree and a monkey could install this equipment!

  19. ROBERT LASZEWSKI says:

     United States 🇺🇸

    Very quite, even when it turns up i can barely hear it. Probably will be purchasing from AC in the future

  20. Anonymous says:

     United States

    Extremely satisfied, easy set up, super quiet!, what a quality streamline product!!! If your not using AC INFINITY,….you crazy!!!

  21. Leijah Petelka says:

     United States

    After applying the easy to use settings, just forget about it and it does it’s job! Very quiet as well.

  22. EzekielNewell says:

     United States

    Super awesome! Best fan/filter set up ever. The handheld controller is a must now. I was always opening my tent to check out temps/rh. Now my girls can grow uninterrupted. No noise as well. Great combo! Glad I purchased. I should’ve purchased this years ago

  23. Anonymous says:

     United States

    Retired HVAC Tech. For my use on bathroom ventilation. I will say these are sweet. Very well made. Quiet with a large display approximately the size of a single gang box. Impressed with the quality. Easy to read instruction easy to hook up.

  24. MelJacobsen says:

     United States 🇺🇸

    BUY THIS FAN. You will understand when you have one ONLY FOR SERIOUS GROWERS if you have one you know if notIts hardtop explain BUY THIS FAN

  25. Anonymous says:

     United States

    My PC sits under a desk where the heat gets trapped especially when rendering videos. After years of suffering from toasty legs, this is great in winter but not so in summer, I decided to get this plus matching hoses. Screwed it under the desk, routed the input from the desk and output to the window. The thermal sensor lets me not run the fans only at threshold temperatures. It can be loud beyond Speed 6, but it is effective.

  26. Jason says:

     Mexico

    Muy buen producto y lleg antes del tiempo estimado, exelente eleccion recomendado

    Cloudline

  27. Anonymous says:

     United States 🇺🇸

    I dislike how everyone is not reading directions and programming this item correctly and trash the product because of their own stupidity

  28. Anonymous says:

     United States

    Quiet. Powerful, light, great sensor, top quality packaging. Will not buy a different ran from now on!

  29. Anonymous says:

     United States

    Awesome. Much quieter than similar products from competitors. I have tried the cheaper fans and put of frustration bought this one, paying a little more. I wish I had just bought this one to start.

  30. Anonymous says:

     United States

    These fans are great. Probe to monitor tent temperature & humidity. Cooling my little tent off on 4, which is super quiet.

  31. Anonymous says:

     United Kingdom

    I’ve tried four different fans over the last couple of years, looking for one quiet enough – this is amazing. It is barely audible up to about level 6, it’s small, light and feels very well made. The temperature/humidity controller works really well to maintain a steady environment, basically, this has massively upped my game. I can’t recommend it highly enough. I’d like to know when ACInfinity are going to start selling their tents over here too as I would really love one

  32. ElouiseHarper says:

     United States

    I already own two of the AC Infinity 4 inch fans and I love them. There are plans to buy at least 1 more. The amount of control and this fan offers for tent growing is absolutely the best. I had a cheap white plastic fan from another grow tent kit, it’s a day and night comparison. AC Infinity hands down is the winner.

  33. Anonymous says:

     United States

    Excellent vent system! Very quiet and powerful enough to run a 4x4x7 tent with ease. It struggles a bit managing a 4x8x8 room.

    Controls are easy to use, it’s sleek and looks nice and very well made. It’s extremely quiet!

    Keeping these in my arseanal !

  34. Anonymous says:

     United States

    Quite and strong. Started the 4″, but shortly upgraded to the 6″. I highly recommend you purchase the 6″ from the start. Love being able to adjust the fan from outside the tent. Great produc

  35. CorinneF06 says:

     United States 🇺🇸

    Works well. Taking a little time to balance the high and low alarms between humidity and temp.
    The fan is smarter than my other equipment.

  36. Anonymous says:

     United States

    So impressed by the quality, packaging, and thoughtfulness of this inline fan that I ordered another, as well as some smaller fans. It was packaged better than an Iphone, the documentation was very thorough, and it was assembled in a way that made mounting it a breeze. The finish/quality is quite good, and the control module has worked perfectly. It doesn’t go straight to max power when it hits the temperature threshold, but ramps up as needed (which is a bonus because it hasn’t woken my wife up once, who was NOT happy with my amateur sheetrock cutting skills…oops).
    I wish AC Infinity branched out to manufacture more items, because they’re nailing it with quality products at a reasonable price.

  37. EmersonMackenna says:

     United States

    To have it “automatically” turn off and on… you need to set the alarm. The alarm is NOT quiet. If there isn’t a way to silence it.. which I haven’t found… this is a design flaw. Fix that please and send me one of the NEW units!

  38. Anonymous says:

     United States

    I used the fan to ventilate a cabinet area that houses the sump pump. It was easy to install, works like a charm.

  39. Anonymous says:

     United States

    Great product gave it a 4 out of 5 because the temperature probe that came with it never worked but I didnt need it too so I only took one star off all I can say is I never trust those anyway and I have other ways of checking humidity and temperature that I use to dial in my fa

  40. Sweta Tiwary says:

     United States

    Small fan @ 205 cfm but all I need for my 2×4+. Handy monitoring function of temp and RH%.

  41. Catherine Balavage says:

     United States

    Great little filter. Works perfectly for my 4×4 tent. Can’t hear a peep from it and it gets the job done. 6/5 stars.

  42. LilianaFarquhar says:

     United States

    Excellent quality, quiet, good airflow, easy setup, controller is nice and has great functions and information, every function is fully customizable and programmable. Time will tell if it holds up to long term 24/7 use, but appears to be a very high quality product. I am very happy with the fan.

    Excellent quality, quiet, good airflow, easy setup, controller is nice and has great functions and information, every function is fully customizable and programmable. Time will tell if it holds up to long term 24/7 use, but appears to be a very high quality product. I am very happy with the fan.

  43. ConcettaPuy says:

     United States

    Goal was to add ventilation to bedroom in basement apartment. This did the job perfectly! Understanding that these were designed for grow tents, I was uncertain how to adopt to my application. Here are details: bedroom 11 x 14 x 8′. No window to provide fresh air. Installed AC Infinity wall vent plate high on wall opposite door, then 8′ of AC Infinity 4″ pipeline to the T4 fan, in neighboring utility room. Not vented to outside, as this space has ample opportunity to vent back into the apartment. Programmed to turn on at warm temp or high humidity. We run fan at low speed through the day. This unit is seldom run at more than setting “5”.

  44. Anonymous says:

     United States

    Good, quiet, well built fan. Would be nice if it came with some hanging straps for a tent set-up. You can not connect the carbon filter directly to the fan without special clamps. The controller is a nice feature, but it seems if you set the high and low temp/humidity options the fan will eventually shut off. It would be nice if the fan had a minimum speed option to keep it running for grow tents that need constant ventilation. I found that I can keep it in the “on” mode at my desired speed and set the alarm settings to make it kick up speed in the event my temps get too hot, but it cuts down on the overall efficiency of the fan doing this.

  45. Anonymous says:

     United States 🇺🇸

    Arrived ahead of schedule. Very solidly made. Very easy to use out of the box. Instructions clear and measures temperature and humidity. Exceeded my expectations.

  46. KaleyShealy says:

     United States

    I use the t4 in my 4x4x6 tent. Very happy with it. Besides being efficient and on the quiet side, the temperature/humidity display is a convenient and informative. Wouldn’t want to grow without it now.

    After I had the fan for a year and a half, the unit had a problem. I emailed customer support and quickly received the help l needed.
    I recommend this product and would definitely buy it again.

  47. nichhola says:

     United States

    A professional fan, that simple. If you’re tired of junk then get this and be a happy grower. My house no longer smells of broccoli sprouts AND no noise! Smart controller was a huge plus for me, being a techie.

  48. Emma Harris says:

     United States

    First time purchasing an exhaust for my 2×2 grow tent and this was a smart purchase!! Super quiet and hardly any issues so far.. temp sensor works great and it’s usually around or spot on the temperature on my other readers.. easy to set up and mount as well.. levels are up to 5 and are nicely spaced out.. I have it connected to a smart power strip so I have a more controlled environment and it turns on with all of the settings I initially set it up with.. current mounted on my wall with ducting on both ends, one leading to my window and the other to my carbon filte

  49. Christy says:

     United States

    Love that i dont have to worry about humidity and temp controls in grow room area. This controls it both manual and via settings you enter. I noticed my bubbler is louder than the vent fan thats how surprisingly quiet it is. Does not control the temp by heating or cooling but rather just does its best to stay within range you set.

  50. TriStupe says:

     United States

    Golden Review Award: 139 From Our UsersWe installed this fan in the rear our diesel pusher RV to help it cool down after a long trip. The RV already had an external vent installed that could be used for a washer/dryer combination. Since we don’t have or plan on having a washer dryer, I decided to install this fan to remove as much warm air as possible from the rear of the RV. When we drive, the diesel engine, located in the rear, heats up, and stays hot for hours.

    The installation was straight forward, if a little unusual. To screw it down, one must undo the two clamps, and remove the center portion that houses the fan. This then exposes the screw holes in the bracket that has the two farings attached.

    After installation, the fan works very well. It moves a large volume of air, and does so with a minimum of noise. The instructions tell how to set the controller to turn the fan on and off according to maximum and minimum temperatures or humidity. It is also possible to simply turn on/off the fan. It has 10 power settings. No matter what mode you use, the fan will go to the highest fan speed that you set initially. It does not slow down as it gets closer to the set temperature. It stays at the set maximum speed until the temperature or humidity cut off is reached.

    Quiet and high volume fa

  51. Paco G. Jaen says:

     United States

    So nice about it twice! This system will change your life! Talk about the best product for the job! This thing blows away all other in it’s class from price to performance! Just don’t set your low temp or low humidity this will trigger the fan to turn on at those temps….. Wich is not what I want or need. Other then the lack of programming videos for the controller and the misinformation online ( YouTube) I was very happy with this product. Glad I tested it before walking away for awhile.

  52. Anonymous says:

     United States

    I bought one of these in June hoping it would be worth the extra money from a cheaper vivosun unit.

    I have since bought a second for second environment. Being able to see the condition on the environment, know it is managing the environment as best as it can, and alarms for extreme conditions is amazing.

    For noise level it is close to my 3 speed 12 inch fan on medium or high. Not bad at all, I have 2 in earshot of my bed with 0 issues on its highest speed.

  53. MckenziViles says:

     United States

    Installed it in my finished basement to prevent condensation in my AC ducting. Works a charm. Quiet and love the automatic control for humidity. starts and ramps up/down to control temp and humidity depending on set-points. Only reason for not giving a 5 star rating is the mounting of the controller. Probably ok for grow tents but the mounting flange is on the back and when mounted leaves the two plug in cables exposed at the front. Its cosmetic but a front flange or flush mount for panel would be nice to give it a “clean look”

  54. Anonymous says:

     United States

    Golden Review Award: 168 From Our UsersI love this setup! I use it for my exhaust in a 4x4x8 grow tent. The noise is almost nonexistent. At times, like after watering, the humidity climbs fairly high. I turn the fan on and within seconds, the number drops. It is powerful enough to clear the air in my tent within 4 seconds, and thats only on level 3!
    The controls are handy and the sensor is very accurate. Its very helpful to be able to set an alarm or to schedule the fan to automatically turn on when the temp or the humidity gets to a certain level. When growing sensitive plants that grow mold or burn, being able to set it and forget it, is a lifesaver.
    I, also, purchased the carbon filter.
    Installation is super easy. The way you face the arrows, will determine whether its an intake or outtake fan.
    I needed to buy some flexible ducting tubes and some tape, as they are not included.

    Great fan for grow tent!

  55. Anonymous says:

     United States

    If your on the fence about this fan. Well do yourself a favor and buy it. It’s silent,strong and easy to setup. The controller will take a few to get just right. But when it’s setup. You barely need to go in the tent. Auto runs awesome. I don’t use the alarm mode. It’s kinda annoying. But it warns you very well.

  56. Molly Cochran says:

     United States

    Purchased the T4 along with a Carbon filter to match, with the intention of importing these fans to South Africa as part of a grow tent online start-up venture. I fully understand I did not qualify for a dealer account as I had not even set up website or company and was finalizing business plan (which I cannot do without costs!). The company stated They would allow me to purchase bulk 20 units, but gave no price. In response I asked if I could purchase 10 fans & 10 filters? They did not even bother to reply! I did not really want to purchase 20 of each to start and really expected a response with perhaps a lower discount. This is a great Fan & Filter, just disapointed that I wasted my money on purchasing in order to test before offering fan to S.A market. I am expecting my venture to grow as they have legalized the home growing of Cannabis here. A bit short sighted if you ask me!

    Purchased the T4 along with a Carbon filter to match, with the intention of importing these fans to South Africa as part of a grow tent online start-up venture. I fully understand I did not qualify for a dealer account as I had not even set up website or company and was finalizing business plan (which I cannot do without costs!). The company stated They would allow me to purchase bulk 20 units, but gave no price. In response I asked if I could purchase 10 fans & 10 filters? They did not even bother to reply! I did not really want to purchase 20 of each to start and really expected a response with perhaps a lower discount. This is a great Fan & Filter, just disapointed that I wasted my money on purchasing in order to test before offering fan to S.A market. I am expecting my venture to grow as they have legalized the home growing of Cannabis here. A bit short sighted if you ask me!

  57. Anonymous says:

     United States

    These fans are advertised as being super quiet and for the most part they are. However I do experience a slight wobble noise with mine mounted with screws vertically on the wall. This is my reason for the 4 star instead of 5. Installation I gave 4 stars but that only depends on how you mount it. If you mount to the wall you have to take the fan apart to get to the mounting holes. Its not hard to do but it does earn the installation a 4 star rating. With all that being said i would still buy another one today if I needed it. These fans work perfectly alongside the controller that comes with it! It does an extremely good job of regulating the temperature and humidity and i don’t have to be around it all the time to adjust as it does the work for you.

  58. Anonymous says:

     United States

    We use us in a crawl space. We ran the display right above our crawl space entrance. We can monitor temperature levels and humidity levels easily. They move tons of air can you keep mold from growing. We even use it in the winter time to keep the temperatures from going to low. Super super quiet also.

  59. Anonymous says:

     United States

    The product comes with great installation instructions and is easy to configure. Although I have only used it for a few days, it seems to delivery everything as promised on the website. A nice solution for a small cramped HVAC room in the middle of our house. If it continues to perform this well, I plan to install a second unit paired to this controller.

  60. MargariVillarea says:

     United States

    bought this for my grow tent in my closet wanted something quite so I could sleep at night because the tent is close to my bed tried other brands and they where to loud when I tried this Ac infinity It blew my exceptions away my bed is about 6 feet away from my closet grow. my actually fan for my room is louder than this ac infinity incline fan on its medium setting. will definitely pick up another one for my other tent because of the controller.

  61. the-health says:

     United States

    so it cost more than other exhaust fans but seems to be worth it. running nonstop at highest level for my greenhouse and super quiet. easy to use and install. love that it is variable on its own and all you have to do is enter the preset levels and it does the rest. mounting hardware was more than enough to get the job done. great product, glad i spent the extra bucks and didn’t waste time with fans that break easily.

  62. Chris Teague says:

     United States

    This fan is well worth the money. First, this fan has multiple velocities to extract air from where you don’t want it. It has multiple alarm settings to power device automatically, which is great because it monitors the area for you. If you have moisture issues, heat issues and need an exhaust fan, this is the one. Depending on circumstance you may have to connect injunction with a switch power fan to move air completely. While the other fan is at rest, this one is still working behind the scenes. Great device.

  63. Anonymous says:

     United States

    I was immediately impressed with the quality packaging. From the box, and labels to the printed materials. Someone out a lot of thought into this. The packaging prepares you for the quality product (fan) inside which is very well constructed. The instructions were easy to follow and installation was easy. I could not have been more pleased with the cost/value equation.

  64. MaggieGibson says:

     United States

    This is a quality item. I’m impressed with everything about it. Comes with the parts you need for different setups. Easy to program and works great. My grow space stays right in the range I programmed. Can’t recommend this enough! I also have an AC Infinity device cooling my AV receiver and that is also excellent.

  65. Anonymous says:

     United States

    Definitely a must for any grow tent. Quite, energy efficient and its programming is top notch. No need to worry about temps or humidity as this product self regulates itself. Keeping humidity and temp in your grow tent optimal.

  66. Anonymous says:

     United States

    You will need the 4-inch pushing and 6-inch pulling threw the 4-inch filter to get any big effect. This would have to be some sort of closed room… My 4inch absolutely sucks pulling alone threw a filter. — I guess the control was what I really wanted. Now to convert that to a fan that will move air for my small paint booth… — Control is kick ass… but the actual pull from the fan is lacking… 4 inch %^%$%^ 4 INCH — ordering a 6 or 8 …

  67. Anonymous says:

     United States 🇺🇸

    Awesome quality from the packaging to the actual fan, it was all impressively presented. The controller feels great in hand and looks great mounted on the wall, easy to set up and impressive as well. My plants dance at full power, they love it. Overall satisfied

  68. Ella says:

     United States

    I bought the T4. It’s a great little fan especially with the temp / humidity monitor and smart controller. However, I had to return mine for a T6 as it couldn’t cycle the air in my 4×2 grow tent (with the carbon filter attached). It actually seemed like with the filter attached there wasn’t even a fan. If you are looking to pick this up for a 4×2 tent in combination with a carbon filter then think twice. Go ahead and size up to the T6 or T8 right now. However, if you are looking to pickup the T4 as a standalone fan then I’d say its definitely a good option.

  69. Anonymous says:

     United States

    Nice fan, the temp humidity monitor works really good and does a good job of controlling the fan if you choose to use them. The control box can be mounted about 10 feet from the fan and can then be plugged in another 8 or so feet from there so theres a lot of room to hide the fan in a closet and control it from another room. The only issue I have is it doesn’t seem to be as powerful as advertised. I have a 180 cfm 4″ fan that is much more powerful than this one.

  70. Anonymous says:

     United States

    I bought a fan about 3 months ago a ipowerd one it did the job but it was super loud. Now this one is quite and you can control your space temperature and humidity. It makes it very easy love it so far let’s see how it holds up.

  71. RochellOUQK says:

     United States

    This fan works just as expected. Controls temp and humidity perfect in a 4×4 grow tent. The alarms work the best for rapid response. Set high and low limits causes overshoot and undershoot due to slower response time then using the alarm settings. Its just the alarm is a bit annoying. Needs to have a way to shut the audio alarm off.
    Main reason for 4 stars though is that it is not WiFi so i cannot control settings from my phone. Hopefully they will upgrade the controllers in the near future to allow this. Would be a great cheap addition to what is already a great product.

  72. Anonymous says:

     United States 🇺🇸

    Love the programmable feature. It also has a temperature and humidity probe, which eliminates need for additional gauge. Noise is minimum. Outer shell is plastic, this weighs less than a steel motor, but don’t drop it ! A little more expensive, but also more high tech, and energy efficient.

  73. Marcia Sekhose says:

     United States

    I love my AC Infinity unit. The design and build are fantastic! The control module monitors temperature and humidity. It also turns the fan on & off to regulate both. You can set both “high” & “low” parameters and the fan turns on/off accordingly. I bought the “set” that comes with the fan, the carbon filter. I also bought the flexible ducting. All the components are a sleek-looking black with chrome accents. Very cool looking and highly efficient system. Highly recommended!

  74. By Joseph Myers says:

     United States

    This is great. Easy to setup easy to use I have 2 of these and one of the 6 inch and wow they are amazing push a ton of.air and little to no noise. The controler is easy to use also. Auto mode rules.

  75. GQEPhilgplwi says:

     United States

    I got the 4 inch for my 3×2 tent and it is awesome. Very very quiet. Legit climate control. Just set and no need to worry. Considering you have good ventilation. But for my size tent. This is utterly prefect. I do recommend.

  76. MargretNorth says:

     United States 🇺🇸

    I have purchased three different units and all of them work with out any issues. Can run them continuously if need by. They are quiet and with humidity control, temp control, and alarm mode I will continue to purchase and install. The best value. I can not say enough about it.

  77. Anonymous says:

     United States

    will buy an 8″ next time, but it’s a good little fan for a SMALL grow tent. my tent is 40x40x80 and this fan can hardly keep temp below 80 in winter. pretty sure it won’t last the summer before i need to upgrade to larger model. good for a small nursery tent, but nothing larger than 24×24.

  78. Runners Fuel says:

     United States

    Literally the best inline fan you can buy. It’s dead quiet, and the built-in heat/humidity controller would be worth the price alone. Don’t buy the cheaper fans. This is the one you’re looking for.

  79. StuMack says:

     United States

    Top quality service. First of all, the equipment does what it says. I am able to maintain 75 degrees, 55% humidity when I want it. The point of this review is my own screw up. As I was installing it, I dropped the carbon filter. Amazingly, it hit the ground perfectly on the probe wire, severing it. I emailed AC Infinity to ask if I could purchase a replacement probe. They said, “we will replace it as a courtesy under warranty.” They did not need to do this, as I was willing to pay since it was my mistake, but they did it anyway. Support this company.

  80. LeilaniWhitehea says:

     United States

    This fan does a great job of maintaining constant temperature and humidity for my plants. The included display is very sleek and easy to program. The product was very well packaged, and included some helpful extras like mounting hardware and adjustable collars to help attach ducting. The fan ably manages humidity/temp in a 2’x4’x4′ grow tent with minimal strain.

  81. Venetta2222 says:

     United States

    Golden Review Award: 40 From Our UsersFirst, the packaging for this fan was top notch! Definitely feels like you’re unpacking high end tech, even the manual is quality. The fan itself is very sleek and light, perfect for a small tent grow. The control (which I mounted outside of my tent) is easy to set up and use and gives you a few different options including fan speed and temp/humidity triggers. The fan slowly ramps up and stays extremely quiet. Very happy with my purchase and would definitely buy again!

    First, the packaging for this fan was top notch! Definitely feels like you're unpacking high end tech, even the manual is quality. The fan itself is very sleek and light, perfect for a small tent grow. The control (which I mounted outside of my tent) is easy to set up and use and gives you a few different options including fan speed and temp/humidity triggers. The fan slowly ramps up and stays extremely quiet. Very happy with my purchase and would definitely buy again!

  82. VaughnFindlay says:

     United States

    Recently purchased the 4″ version, hearing it was the best on the market and I am NOT disappointed. The auto adapt function is second to none. However, my only gripe, as cliche as it may be, is that there’s not an app that allows me to remotely use my mobile device to adjust fan speed and settings while also notifying me of temp/rh changes by sending alerts straight to my mobile device and/or email. Just a thought. That aside, I highly recommend purchasing this product, and will do so again myself in the future.

  83. Anonymous says:

     United States

    It’s a 5 Star product! But came with a scratched screen. I bought the T4 with digital controller. I’m using it on a grow tent that is 28″x28″x63″. Two plants, 240w led light, humidifier. this fan keeps my environment right where I want it. It paired well with a 4″ carbon filter. I like that I can hook up two fans to the digital display, this will be great for when I expand to multiple tents.

  84. muckmuck says:

     United States

    Update: ac infinity made things right and are sending out a replacement unit. I am updating to 4 stars. If it works out I will update to 5 stars. I believe the problem to be the controller as the probe and fan functions had completely failed. Originally I thought the fan had failed. I then plugged into the second connection and worked for a short period of time then failed again leading me to believe it was a faulty controller. However I did have to buy another fan at a high markup to save my vegetables from dying.

  85. Anonymous says:

     United States

    AC Infinity CLOUDLINE T4, Quiet 4″ Inline Duct Fan with Temperature Humidity Controller-

    PROs:

    Looks awesome
    Runs nice and quite
    Easy to set up
    Absolutely love the Controller

    This thing comes with everything you need to install it just about anywhere.

    CONs:

    I should have went with the 6″. Currently using this for my first grow with the AC Infinity Carbon Filter.

    I’ll try and post pics and updates

  86. Anonymous says:

     United States

    Had some heating issues in a small tent, my fault too much light. Added the S4 to my T4. By the time it amps up,
    the temps have dropped to preset temp. Quite also, noticed the sides of my tent being sucked inword & material was tight on the framework. I think the filter & pre filter wrap might slow the exhaust fan down just a little.
    You can get a similar product for less $ , but over the years I’ve learned you get what you pay for.
    Definitely will purchase another setup on my next tent.

  87. Anonymous says:

     United States

    What is not to like! The charcoal filter weighs more than this motor. Love the controller. Set it and forget it! Now I can walk away and not worry if the fan should be running or not. Highly recommended!

    What is not to like! The charcoal filter weighs more than this motor. Love the controller. Set it and forget it! Now I can walk away and not worry if the fan should be running or not. Highly recommended!

  88. Anonymous says:

     United States

    Golden Review Award: 2 From Our UsersFirst off, excellent product makes life a lot easier. Very good at what it does, which is turn fan on when parameters are met, and doing so in a very efficient way. Only downsides are not constantly on which would be important to some use cases and there is no way to configure this as I can tell. Would be good if ‘off’ could be set at a low speed 1 or 2 rather than completely off. Otherwise if it gets too cold or dry there is no way to add heat or humidity using the data from the controller, separate devices are needed. Maybe find a device that can do all of these if this is important to you.

  89. Anonymous says:

     Italy

    Facile da usare, molto bello e compatto e fa egregiamente il suo lavoro. Unica nota dolente a mio avviso la rumorosit. Fino a poco pi di met potenza molto silenzioso poi comincia a farsi sentire abbastanza. Comunque prodotto molto valido rispetto alla concorrenza

  90. PhilippGlenn says:

     United States

    This exhaust fan is exactly what I was hoping for when I purchased it. I’m using it as filtration for a grow tent set up. The fan works so well, I purchased a second one and again, NO issues, runs perfectly.
    The fan has a digital display control that can be mounted outside the tent. The humidity/temp sensor is spot on accurate.
    The fan runs fairly quiet compared to others I’ve seen. It has 10 speed settings and obviously gets louder at the highest setting.
    You can also program the fan to operate with temp/humidity variances.
    Overall, I’m very satisfied with this product and would purchase again.

  91. Anonymous says:

     United States

    This is a great exhaust system when set up correctly. The Auto Mode allows you to set parameters for when you want the fan to turn on depending on temperature or humidity. There is an alarm mode that will go off on a separate set of parameters if you’re using this fan in a larger space (I have it turned off). Since I switched from a box fan exhaust to this I have noticed much less power consumption with the Auto mode and my Humidifier turns on much less meaning I don’t have to fill it nearly as much.

    The only thing that seems weird is on the Auto mode, You set a High and Low for Temp and Humidity. But if you ever hit the Low numbers the fan turns on making the space even colder or less humid. So keep that in mind. The auto modes are parameters to turn ON the fan. It will only turn off when the room is inside the 2 numbers set.

    All in all this is a great system and would suggest or buy again if I need another.

  92. Anonymous says:

     Germany

    Golden Review Award: 4 From Our UsersOhne Einschrnkung zu empfehlen. Bester und vor allem schlichtester Lfter auf dem Markt. Sehr leise in den unteren Stufen. Automode funktioniert prima, der Stromverbrauch ist vorbildlich gering.

  93. Anonymous says:

     United States

    I love that the controls allow for fan to activate for both temperature and humidity simultaneously. Keeps heat in check with lights on and ventilates humidity at night. Great value when you add in the cost of a control unit. Super quiet as well. Highly recommended!

    I love that the controls allow for fan to activate for both temperature and humidity simultaneously. Keeps heat in check with lights on and ventilates humidity at night. Great value when you add in the cost of a control unit. Super quiet as well. Highly recommended!

  94. Anonymous says:

     United States

    This fan is awesome for sure. I have more than one fan from ac infinity and I have to say that they have a quality product. I had a small issue and the customer service was excellent! I will continue to be a customer.

  95. Anonymous says:

     United States

    El extractor lleg con unas rayas, como si fuera usado. Apesar de eso observe que podra ser por el envo. Funciona bien, no genera mucho ruido y es potente.

  96. Anonymous says:

     United States

    I paired this with an S4 fan through the control module. I use these fans as fireplace blowers in my old wood burning fireplace. The temperature probe is placed into a hole in masonry next to the fire box controller was set to come on at a certain temperature and the quiet fans circulate the air wonderfully. Perfect for my application.

  97. Anonymous says:

     United States

    Bought this fan for control to humidity in a small bathroom after long showers. The bathroom still builds up with have most in the air and on the walls, but after done showering the room drys out much faster. I set mine to turn on automatically after the humidity hits 50%. You can not hear it ramp up to full speed, but it does.

  98. Anonymous says:

     United States

    My application of this duct fan is somewhat unusual. I drilled a 4″ hole in the floor of our non refrigerated “wine closet” and mounted the fan vertically to a joist in the crawl space with the output end sticking into the 4″ hole. The crawlspace is always around 65 degrees all year. Now, so is my wine closet which used to vary a lot because I was not always home in the summer and the house (and closet) would get into the high 70s sometimes. Mid 60s for wine is fine unless you are a purist. As mentioned, it is working as intended and does not have to run all the time since it has a thermostat control.

  99. EarnestHTKZ says:

     United States

    I like Everything about the fan. It is real easy to disassemble for cleaning. The center fan just unclip and pulls out without removing duct. Kick ass little 4″ fan. I use it in my 4 by 8 grow tent. I will be buying the 8″ and 10″ when my hyperfans go out in the flower room. Awesome product dudes

  100. Anonymous says:

     United States

    Golden Review Award: 2 From Our UsersI sized the fan so I’m usually running it at level 5 or lower. At those power levels it’s silent. When installed and hooked up to ducting I can’t even tell it’s running at levels 1-3. Level 5 I can hear it but it’s very quiet. Around level 7 above you can hear that it’s really working. Much of the noise is air flow and not anything with the fan like a bad bearing or out of balance.

    I love the display and ability to set the fan to turn on depending on the parameter you select. I only wish that you could select both temperature or humidity to turn the fan on.