AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller – Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics
CLOUDLINE Series
An inline duct fan designed to quietly ventilate grow tents, boost heating/cooling to rooms, circulate fresh air, exhaust projects, and cool AV closets.
A Quieter and Smarter Inline Fan
The new CLOUDLINE series contains a cutting-edge Electronically Commutated (EC) motor, controlled using precise electronic pulses and smart programming. This enables the inline fan to operate considerably quieter and reach low speeds without generating noise or heat. The EC motor is also twice as energy-efficient and can save up to 40% in energy costs, paying for itself in the long run.
Key Features
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Smart ProgrammingT-series models include a programmable controller with precise temperature and humidity sensors located on the 12-foot corded probe. | Quiet PWM MotorEach fan uses a quiet, energy-efficient EC motor controlled using Pulse Width Modulation (PWM). Dual ball bearings allow for omnidirectional mounting. | Mixed-Flow DesignFeaturing a mixed flow design, the fans maintain peak performance in high static pressure environments. Ingress-protected against dust and liquids. | Plug and PlayThe complete kit includes the inline fan unit, controller, user manual, and everything needed to mount the fan and power it through an outlet. |
Connecting Additional Units
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CLOUDLINE 4-SeriesA CLOUDLINE T4 plus CLOUDLINE S4 system can be linked to the same smart controller, and used in conjunction for a total of 410 CFM airflow. This set-up is ideal for ventilating smaller grow tents and cooling AV rack cabinets. | CLOUDLINE 6-SeriesA CLOUDLINE T6 plus CLOUDLINE S6 system can be linked to the same smart controller, and used in conjunction for a total of 804 CFM airflow. This set-up is ideal for large grow tents, AV closet cooling, and boosting airflow for HVAC projects. | MIX and MATCHThe same controller can connect CLOUDLINE fans of different sizes, to share the same programming. For example, an exhausting CLOUDLINE T6 with a filter can share the same controller as an intaking CLOUDLINE S4, to balance static pressure. |
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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 |
Great fan for guerilla or open grow. External plate nice optio
This is the second one I ordered and the product is great, it the one I just received came in a box that wasn’t for shipping (box even says do not ship in this). Also it wasn’t even taped shut, everything was still inside and worked fine but it’s not Bluetooth compatible like it say and the other one is.
This thing is a game changer….. It takes a lot of the work and worries away… If you can’t keep your temps/ humidity stable then don’t wait just purchase….. It’s worth the money many times over.
Only downfall is the app doesn’t always like to connect but other than that no complaints
This item is fan is great. In my extremely limited experience with fans this unit is not that loud and can be lowered to a noise level very low. The control mod is great, wish it was WiFi…
I’m using this with the charcoal filter to scrub and exchange air in my tiny home. It is ultra efficient. I monitor the power consumption very closely and it blows my mind how low this fans usage is. The temp sensor and controller are very good quality and super functional
First off, the definition of quiet is very flexible so it is more quiet to some than others. But other than that i really really enjoy the product and i recommend anyone who is looking to buy one to do so. It is cheaper than the other products that have the automatic features and its rated one of the best.
This thing is awesome, being able to dial in my vpd has been super helpful. Can’t wait to see how the controller works with another unit for intake
These things are amazing for controlling temp and humidity. I don’t know how I grew indoors without them in the past!
Installed 4″ AC Infinity exhaust fan in my 3tent today. My carpenter friend installed louvered venting for me and it is ducted to the outside. As soon as I can afford a second fan, I will install it (for the 2tent) as the ducting is already in place!
I already own two T6’s.
It was quiet and energy efficient. Now it is 100% quiet and efficient. It quit working just over a year old. Almost bought another for my new enclosure. Not dependable. Disappointed.
I like this fan, my only issue is that I ordered 4 of these. The first 2 came with the U-CONTROLLER 59. This controller isn’t app compatible unlike the Controller 67 which my other 2 orders contained. The way I have my setup I have to manually adjust the fan mode for the 2 crappy controller 59’s. If I can swap out the two older conrollers for the new 67’s I would rate this 5 stars.
I have been running this fan for about an hour and wow what a game changer. Where I live we have temp and humidity swings and this is exactly what I needed to keep everything dialed in – wish I bought it years ago!!
Der Lfter ist top. Kann man uneingeschrnkt empfehlen fr seine Leistung!! ist er angenehm leise! aber das sollte man dennoch nicht unterschtzen. Ansonsten der Controller ist wunderbar mchte nicht mehr ohne. Bin sehr zufrieden. 🙂
This fan/controller is a MUST have for anybody with an indoor grow tent. The controller really simplifies the process of controlling airflow in the tent and offers excellent flexibility/automation that no other fan on the market offers. It’s also nice to see the gauge on the outside of the tent vs. having to crack the tent open to check the thermohygrometer on the inside. Would recommend to anybody with a smaller size tent and wouldn’t hesitate to get one of the larger models for a larger tent.
This company has the best and most well thought out components that flawlessly and seamlessly work without issue.
I now own 2 of their tents. 3 of their fans 15 fabric pots a d their ducting .
I cant wait for their LED lights soon to hit the market .
I have seen and read the reviews its going to be a game changer!
Used this fan to control temp in a fish breeding room, works perfect. The controller is great and has an infinite number of ways to control the fan.
BONUS. The T4 cloudline I just got has Bluetooth and a great app to monitor. The temp/humidity/fan parameters are all logged even when not connected
Works great in the 3×3 tent.
Any bigger of a tent though and it’s harder to hold temp
AC Infinity is the only way to go yall. Inline fans, tents, shears, all vent systems. Everything. Hands down raddest company. Best customer service, the most well put together products.
@barelee.growi
Best fans for the $ out there, very powerful!!! Well made.
Wasn’t expecting to get the smart controller with the fan, was kind of under the impression if I wanted it I had to buy it separately and replace the base model controller as that’s what My last 2 came with. Love it thanks for the great product!!
amazing duct fan moves a lot of air. controller 67 included was really nice, i almost bought one glad i did not. was easy to setup and program. the ability to set a min/max speed on auto is so nice much better than the previous controller that came with the t series.
These fans are the best. Great control panel, low noise, great suction. Sexy looking too.
I have e a few of these. I would say that I wish I had the 6″ instead but that’s an after the fact based on my usage. I think the larger system would make for easier work load capacity if you’re using it all the time.
I hired HVAC technicians, changed the ducting, tried several other inline duct fans over the years… but until now, needed a supplemental space heat heater or portable humidifier to heat/cool our small bedroom. All other inline duct fans had insufficient CFL power until this miraculous product that is temperature-controlled to boot. Although I’m a laymen w.r.t. understanding the settings of the control unit, the product’s manufacturer answered all my questions via live chat and live telephone calls by tech-savvy customer service technicians. First class manufacturer, customer service, quality, seller, value/savings and engineering!
2nd fan also have 8″ work perfect. I had a question called Andy at customer service and he answered it immediately. Great company to do business with also have Infinity tent & charcoal filter. They are my grow room supplier foreve
All I can say is WOW what a nice nice unit, quit, programable, control by my phone, quality material, built to last, works in so many configurations, looks absolutely beautiful would look nice in any room and this is just the little one of there line of exhausts.
I was confused on setting up the controller until I downloaded the app. App makes it so easy to set-up. Quiet fan.
I like giving positive feedback when it is deserved. These AC Infinity exhaust fans are excellent. Their customer service is excellent as well. Not something you see to often these days.
Package arrived in the box without being packaged in another box. It literally says not to ship it like that. It wasn’t even taped closed. I’m shocked everything was there.
So far it works fine. Quiet on low speeds but sounds about as loud as my old 165cfm at 10.
I like that there is an app for the controller. It’s a little confusing setting temps for it to automatically run but it makes sense once you think about it.
I’ll update if anything fails but it seems good for what it does.
Edit: the Bluetooth app is amazing. I have this set on auto with a one degree variation and it keeps everything exactly where I want it.
If it was wifi it would be perfec
When I looked into this product, I wasn’t sure it was going to be good, well let me tell you, the packaging keeps everything safe and it’s very quite unless you turn it up to the max, but the screen works good and I use it for 3×3 tent, definitely will buy another in the future
I purchased this 1.5 years ago, and it has worked great. The controller is a little complicated to set up, but that’s because it does so much. You can set High/Low temperatures, High/Low Humidity, timers, and alarms. The fan is so quiet that I have to put my ear next to it in order to hear it. The fan has 6 speeds, and it increases based on how hot/humid it is. It slows down as it gets closer to the desired temperature/humidity. (I wish I had something like this for my salt water fish tanks!)
As for customer service…The screen on the controller went dark, and I wasn’t able to make any changes. There is a 2 year warranty, and I had it for 1.5 years. I called the support line, and the lady told me to email a description of the issue to their support group, along with my snail mail address – which I did, along with an image of the controller screen. The next day I had an email from them stating that a new CLOUDLINE T4 was on it’s way…no questions asked. Within 4 days, I had a brand new unit, not just the broken controller, but a new fan as well. They also sent me a free shipping label so I could send the broken one back to them.
I’ve never had such an amazing experience with a company’s customer service as I did with AC Infinity. I would recommend this product to anyone. I’ve grown a lot of healthy plants with this and never had mold issues or overheating in the summer. I cannot say enough good things about the product and the company.
I set the fan up to find out the temperature probe wasn’t working. I emailed support and asked if I could replace it. They contacted me almost immediately and sent me a new probe AND controller for free. Very awesome.
I’ve owned a few metal clunky fans over the years for my tent, and I hate myself for not upgrading to AC sooner. It’s plastic, yes, but it’s seems to be pretty solid stuff. At the highest speed I still have circulating fans that are louder than the T4 fan. I will be adding their ducting and new filter very soon.
First duct fan i purchase so i cant compare to anything else. What i can say about it.. good quality build. Doesn’t make much noise but i believe that decreases or increases depending on the way its setup and how much ducting is attached to it. What i like most and the reason i chose this brand is the ability to adjust everything digitally. The ability to set it up so that it turns on or off if certain parameters are hit. An alarm to let you know temp or humidity is too high or low. Using mine in a 4×4 tent and seems to keep everything right where it needs to be
This is a great fan for moving air quietly. But it doesn’t have a heater or cooling unit, so I don’t get how it helps with humidity or temperatures besides adjusting the fan speed automatically.
So far very pleased with this fan moves a good amount of air is very quiet on speeds 1-4 speeds 5-10 are still very reasonable on noise the sensor probe is accurate only wish the sensor probe was 20′ it’s only 12′ which is very limiting on placeme
This fan is bar none #1. Top quality, not really loud at all, an does this thing moves air? Hell yeah it does. Comes with a controller, that gives you info such as fan speed, humidity, timer,I mean just prefect for my grow op.
Super quiet! Works just perfect in my 2×4 tent . Easy to setup and the lcd settings are also easy to navigate. Super happy with my purchase!
I used this inline fan to climatize a room that had no ducting. Common problem when using mini splits. It worked perfect. The fan is quiet on normal operating speeds. If you’re going to run it full bore then its going to be a bit loud. The thermostat set up couldn’t have been easier. Everything worked as advertised. Plug and play. My only complaint is that the thermostat wasn’t wireless so I had to use a cable wall plate.
I like this fan. The noise levels are very low.
I like the fan controller in that I can adjust the fan speed outside of the grow tent.
BUT, the thermostat on this DOES NOT work correctly. It doesn’t register the correct temperature or humidity. I calibrated it over and over, sometimes it will be correct for awhile but mostly it’s all over the place. And I don’t mean it reads high consistently or low consistently, it doesn’t even come close most of the time either being way too high or way too low. If it’s 75F the controller is reading 82F. If it’s 77F the controller is reading 69F. You can’t depend on it at all. As a result you can’t use the other functions because they are dependent on the temperature readings. You can EASILY DAMAGE YOUR GROW because of this.
I contacted the Seller and they were a little slow to respond but they did respond. They were able to get me another controller and probe. After receiving the new replacement I did testing against other thermometers that I own and know to be good and accurate. I expect a bit of variance but the replacement was worse than the original one.
I finally just disconnected the probe because it not only irritates me to see the wrong readings on it all the time but it scares me when I see super high false readings.
The difference in price for this fan with the controller and without the controller is ~$30.
My recommendation is for you to buy this fan as it is really nice. Has nice strong airflow and is very quiet. But buy the one WITHOUT the controller and buy a separate wireless thermometer for around $25.
If this company wants to sell more of these with the controller they need to fix this problem. If it worked it would have been great.
I WOULD buy this fan again but WITHOUT THE THERMOMETER DISPLAY CONTROLLER.
The AC Infinity T4 is a great exhaust fan, and the temperature/humidity control feature is definitely a plus. It’s a lot more powerful than the one I was using before it and it doesn’t make very much noise either. I would recommend it to anyone that is looking for an exhaust fan system.
So far works well. Really does remove smells from the tent when tent is closed! Happy with this item. It could help drop the temp a little better. But over all very happy
Simple direct installation directions. Easy to set up controls. Quiet operation.
Sehr guter Lfter leise auf den ersten Stufen und eine gute Anzeige schade das Mann 2 Lfter brauch um es richtig steuern zu knnen der Preis ist ok
Super Lfter unglaublich modern und gut zur berwachung von aue
Great for sucking hot air out of an AV cabinet into a basement. Note 4.5″ holesaw makes large enough hole to pass through duct. Hold the leaf button once high temp is set to lock buttons. I set the alarms to off which I forget but is in the instructions.
Super Lfter unglaublich modern und gut zur berwachung von aue
This product was very good in reducing the temperature inside the cabinet. The noise level is very quiet. Highly recommend this product.
This is the 4th one I purchased. Just as good as the first.
It works perfectly it vent out the humidity and hot air outta my bathroom..
Love the easy setup and easy-to-use controller … very quiet and powerful fan.
Excellent product! I have 2 6 inch AC Infinity systems also. Very quiet. Moves a high volume of air.
Super easy to install can barley hear it on level 10
This is a great produc. The monitor helps with the grow.
Easy to install in 5 minutes. It’s nice and quite on 5 where I ramp mine up too. The controller is a nice feature to have to be able to set your settings and let the controller do the work. Great asset to any indoor te
Cmon u people know infinity is the best for people with indoor gardens. Works great great produc
AC Infinity Cloudline’s are absolutely amazing! I have a T6 and T4. Both are super quiet. The T4 has a newer controller with a few newer features than my older T6, but both are quiet and work well for keeping my grow conditions where I’d like them. Will definitely be buying a couple more, later, and the new AC Infinity Controler 67.
Fan seems to work fine. Box was smashed and open when I received it. No shipping box was used. No tape was used to close box. See picture of label on box. States “Do not ship as is””Use additional shipping box”. Ironic, huh.
UPDATE
Installed today, this fan super quiet next to the other brands and I have one right next to it. Really like the controller with temp and humidity. Awesome fan, Lousy shipping – I see Amazon shipped, so what happened?
I purchased the T4 for a small space. It was very easy to install.
I always want the fan on, so the controller/sensor arrangement is useless for me. Just added expense.
As advertised, it runs surprisingly quiet. The motors step up and down very smoothly.
While I initially planned to acquire the less expensive model S4, in the end I decided to go for the T4 model since I really liked the temperature and humidity control.
In regard to the noise levels, the device has acceptable levels while working on the settings 1, 2 and 3. However, when the fan speed is on level 4, it makes noticeable noise, and level 5 is extremely loud. Since the device is advertised as a quiet inline fan, I was expecting moderate noise levels on medium speed.
Overall, Im disappointed I didn’t go for the S4 model because the controller did not work for me.
Nevertheless, the customer service from the firm is excellent, they solved my problems is less than a day.
These are just absolutely great. Love the fact you can use one controller on 2 fans irregardless of size. The multi-level of controls, alarms, temp and humidity are just incredible. Won’t deal with those out ‘bargain’ cheap imitations.
I normally do not write reviews, but this company earned a praise.
Such good product. And I mean all around. The box, the instructions, the finishing of the product itself, the quality of the materials and the fact that they “just work.”
I have to give it to you guys… good job!
I have a cabinet cooler and an in-lone fan from this brand and I would 100% recommend them.!
looks great sounds quite as can be, use in our bedroom grow so we sleep next to it! works great top of the line!
If you have a slow dryer this is your solution!
My vents were clean however the length of pipe was too long. This thing took dry times from 2 hours down to 40 minutes! Worth every penny. Very quiet. Love the flexibility of the digital controls
Easy to install, minimal noise on high setting, great for regulating temperature and humidity with automation via the controller. Would highly recommend.
This is a great product, well made, works phenomenal. Very quiet even on high. Great deal!!
I bought this to replace less expensive fan. It is way better and quieter. Do yourself a favor and start with this one and you will be happy.
The AC Infinity quiet 4 is something you need and it is quiet even on the high settings. It just keeps on going.
I was able to get the duct tube that goes with this system (sold separately), securely over the system, however it was quite difficult and I can’t imagine how many people have ripped it bc they are dang near the same size in diameter. Great working device but I’ll agree with the other reviewers that 1/16th of an inch wider for the vent tube is needed but u can do it. Nice and easy
Fantastic and does exactly what I needed for it to do. Would definitely buy again and will plan to buy more in the future.
Perfect. Very little noise. I have it on setting 5 out of ten and my 6″ clip on fan makes more noise than this!
Best fan ive used in my grow. Super quite. Works well, and display is very useful. I will be getting another one of these.
These are great fans. I just ordered my second. There are a million reviews that extoll their virtues, so I’ll just skip to the two things that bothered me:
1. The temperature and humidity meters read high. I’ve placed the probe beside several other thermometers and hygrometers and the AC infinity consistently reads higher, especially the humidity.
2. You’d think the AC infinity carbon filter would fit into their own fan, but it’s much too large. That might be more the fault of the filter than the fan, but since they are so often bought together, it should be mentioned. If you’re going to mount the filter directly on the intake of the fan, be prepared to do some jury rigging. I just used multiple layers of silver tape to build up the diameter of the fan’s flange until it for snuggly in the filters flange. And then I tapped out some more.
Definitely worth the buy. I saw a decrease in my electric bill after I installed it in my 4×4! The noise level is barely noticeable.