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Availability:
In Stock.
Arrives
Saturday, Oct 24
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Size: 6-Inch
Color: Pro Speed Controller for S6
Features
- Designed to ventilate grow tents, transfer heating/cooling to rooms, circulate air, exhaust odors, and cool AV racks.
- Features a wired 10-speed fan controller; also compatible with all UIS controllers with intelligent programming.
- PWM-controlled EC motor provides quiet and energy-efficient performance with minimal heat and noise.
- Mixed flow design with stator blade and hydrodynamic wind circles enables airflow delivery in high resistance areas.
- Duct Size: 6 | Dimensions: 7.9 x 12.6 x 8.4 in. | Airflow: 402 CFM | Noise: 32 dBA | Bearings: Dual Ball
Description
AC Infinity is a technology company that specializes in environmental controls for agricultural and HVAC applications. Our smart controllers and integrated grow equipment are designed to work together to create the perfect climate for your plants. Improve your air exchange while maintaining a quiet and energy-efficient performance. Adjust your climate and VPD from anywhere with the AC Infinity app via WiFi. Download the AC Infinity app for access to custom activation using climate triggers, grow cycles, scheduling, and automation programming. Create automation for your devices to systematically manage your grow tent environment. Set customizable alerts that can trigger to almost any event. Interactive graph intuitively displays temperature, humidity, and VPD data. Input target figures to help your grow tent approach and maintain your ideal environment. Stay on top of what's happening in your grow space using alerts and notifications so you can quickly counteract any environmental spikes. CLOUDLINE PRO S4 CLOUDLINE PRO S6 CLOUDLINE PRO S8 CLOUDLINE PRO S10 CLOUDLINE PRO S12
Brand: AC Infinity
Color: Pro Speed Controller for S6
Electric fan design: Exhaust Fan
Power Source: AC
Style: Cloudline S6
Product Dimensions: 7.9"D x 12.6"W x 8.4"H
Room Type: Indoor
Special Feature: Programmable
Recommended Uses For Product: Inline Duct Fan
Mounting Type: Downrod Mount
Power Source: AC
Room Type: Indoor
Special Features: Programmable
Recommended Uses For Product: Inline Duct Fan
Mounting Type: Downrod Mount
Controller Type: Button Control,App Control
Number of Speeds: 8
Noise Level: 32 db
Wattage: 38 watts
Number of Blades: 10
Air Flow Capacity: 402 cfm
Voltage: 240 volts
Indoor Outdoor Usage: Indoor
Control Method: App
Number of Power Levels: 10
Main Power Connector Type: Two or three-pronged plug (100-240V AC)
Motor Type: Brushless Motor
Installation Type: Inline Duct
Blade Material: Plastic
Specification Met: CE, ETL, RoHS
Color: Pro Speed Controller for S6
Electric Fan Design: Exhaust Fan
Style: Cloudline S6
Finish Type: Matte
Collection Name: Inline Duct Fans
Item Dimensions D x W x H: 7.9"D x 12.6"W x 8.4"H
Blade Length: 8.4 inches
Item Weight: 0.27 g
Cable Length: 8 feet
Size: 6-Inch
Brand Name: AC Infinity
Included Components: Cord, Remote
Model Name: CLOUDLINE S6
Model Number: AI-CLS6
UPC: 819137020306
Global Trade Identification Number: 06
Unit Count: 1 Count
Part Number: AI-CLS6
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Oct 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 6-Inch
Color: Pro Speed Controller for S6
I purchased the AC Infinity CLOUDLINE PRO S6 to use as a booster fan for my portable air conditioner. I had previously bought a cheaper inline exhaust fan, but it was extremely loud and stopped working after only two months. So far, this fan has been amazing. The amount of air it moves while remaining quiet is impressive. I only need to run it at about half power, while the cheaper fan had to run at full power constantly and still did not perform as well. I definitely recommend spending the extra money on this fan. It feels well-built, performs exceptionally well, and should ultimately cost less than repeatedly replacing cheaper fans. It has been money well spent.
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Reviewed in the United States on July 23, 2026 by MatthewT
Size: 6-Inch
Color: Pro Speed Controller for S6
I purchased the AC Infinity CLOUDLINE PRO S6, 6” Inline Duct Fan with Speed Controller to help keep my miner room cool, and it has exceeded expectations. The EC motor is both powerful and efficient, and what surprised me most is just how quiet it runs, even at higher speeds. Installation was straightforward, and the included speed controller makes it easy to adjust airflow as needed. Running multiple miners can heat up a room quickly, but this fan has made a huge difference — it keeps temps under control without adding a lot of noise or power draw. The build quality feels premium, and I can tell it’s designed to run continuously without issues. ✅ Pros: Very quiet operation, even at high speeds Strong airflow to keep miner room temperatures down Speed controller included for precise adjustment Efficient EC motor saves power over time Solid build quality, designed for 24/7 use ❌ Cons: Higher upfront cost compared to budget inline fans Speed controller cable could be a little longer 💡 Tips: Use insulated ducting to further reduce noise. Mount the fan with vibration-dampening straps for an even quieter setup. Pair it with a temperature or humidity controller for automatic adjustments. Clean the fan and ducts periodically to maintain peak airflow. Bottom Line: The CLOUDLINE PRO S6 is a top-tier ventilation fan that’s perfect for high-demand environments like mining rooms, hydroponics, or grow tents. It’s quiet, efficient, and powerful — exactly what you need for reliable cooling in a 24/7 setup.
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Reviewed in the United States on August 25, 2025 by Kenny Campbell
Size: 6-Inch
Color: Pro Speed Controller for S6
I have 4 of these now and have been very happy with them. They are dependable and quiet for my needs. Best feature is that it remembers the speed setting while powered off. Only request is to add ability to decrease speed directly without cycling through the speeds
Reviewed in the United States on October 6, 2026 by Gary B.
Size: 6-Inch
Color: Pro Speed Controller for S6
The AC Infinity cloudline pro S6 is an excellent and powerful inline duct fan. I bought this to vent the smoke and fumes from my laser cutter setup while cutting and running long vector engraves. It clears the machine perfectly and my workshop's air is virtually odor free. It runs quietly right next to my crafting station so I’m able to comfortably cut vinyl on my Cricut while keeping an eye on my laser. I highly recommend this fan for any laser engraving/3D printing workspace.
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Reviewed in the United States on September 28, 2026 by Reviewer
Size: 6-Inch
Color: Pro Speed Controller for S6
DAY 1: WHY I BOUGHT THESE I bought these hoping to find a 6" fan that could move some air gently, without causing the sound and fury of a small cyclone in my recording studio. With voice over work, extraneous noise is a problem. So is heat, and air!, because VO rooms are usually completely closed off the the outside world. They get hot and stuffy without proper air flow. This is the answer. I have tried 6 different claimed-to-be-quiet fan solutions via Amazon and YouTube reviews... this is unequivocally the best for my situation. I unboxed and hooked one of these up (not to my room, because that will require some ducting and electrical changes) in an untreated echo-y basement room with a hard tiled floor. So no mounting yet, no ducting yet, just the fan on the floor with its 10-level USB-C controller, and me holding my iPhone running the app "SPLnFFT" noise meter at about 12" above the center of the fan, airflow running unimpeded from left to right on the floor, The iPhone was held level so I could read the display. Here are a few hasty values. Starting point: Fan at 0 = 30db (A) This is the room's noise floor when nothing is turned on. The meter terms this level as "Almost Silent". Fan at speed 1 = 37db (A) The meter calls this "Very Quiet". Fan at speed 2 = 45db (A) The meter labels this "Quiet." Fan at speed 3 = 53 db (A) "Comfortable" Fan at speed 4 = 60 db (A) "Moderate" ASIDE: Note that these levels are purely "in the moment," not carefully measured. Use these approximate numbers as a rough estimate only if you are similarly seeking a quiet, controllable fan solution. I did "round off" to the nearest dB, so 37.2 became 37. Keep in mind I intend to use 2 of these fans, 1 to send fresh air into the booth from floor level, and 1 for pulling warm air out of the booth above eye level. I don't want a wind tunnel, simply fresh air moving through the space via insulated, flexible ducting to help keep the air flow noise reduced as it travels into and out of the booth. I anticipate that once installed, I can record spoken/sung material without concern for air noise. Even at speed 1, the air flow felt pretty good. At the next higher settings, it grows noticeably stronger. I only ran through speed settings of 0 to 4, because at 4, I figured I was getting to "you're gonna hear this" territory and decided not try any higher settings. I would not record with air flow noise. But I did step though the rest of the settings, because the fan controller only increases the speed (no going down, only up) until the step after 10, which is off, so I got hear and feel those levels even though I was not interested in measuring them. A pair of these fans will clear the space pretty easily. THE FUTURE: AFTER THE INSTALL, and LONGEVITY I plan to return and update this first-look review with genuinely measured results once the booth is complete. That will likely be another few months because... life, family, and holidays. And if anything fails (controller, fans, whatever) I'll update this then, too.
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Reviewed in the United States on December 15, 2024 by James
Size: 6-Inch
Color: Pro Speed Controller for S6
This is an excellent quality fan in many ways, and is very quiet on the lowest 2 settings, and tolerable noise level on the 3d setting, but above that it gets intolerable for me. That's OK for my use, because I don't need to go above the 3d speed setting, which I'm told is about 130 CFM, but if you need more CFM, you may be better off using one of the larger versions to keep the noise level down at higher CFM. I do recommend staying with this Cloudline series of fans, because I don't think you will find anything else as quiet for any given CFM and pressure. I can't bypass the opportunity to scold the designers or product-design-decision makers for the stupid 1-button control concept that is all too common with many products these days. I mean if they just would realize how much more they would make by selling many more with the proper user-oriented controls, instead of trying to save a few pennies by using only 1 button, which forces the user to push the button 8 times to turn the speed down 1 tick, and to hold the button down to turn it on or off. To the product-design-decision makers: try to imagine what percentage more you might sell if you put the proper controls in to make the customers love it, instead of being annoyed by it, and then calculate how much more total profit might be made with that percentage increase is sales, and then see how that makes the tiny amount saved by 1-button irrelevant. Bottom line is to design for the user, not the ease of making it. I am very experienced in fans for ventilation, and so I didn't expect it to be quiet at the higher speeds, and I am very pleased with the quietness and good air flow at the lowest 3 settings. It performs very well for my purpose, which is home intake fresh air ventilation connected to a filter box. Even the lowest 2 settings move plenty of air to keep my 1000 square-foot home constantly supplied with fresh air, and in the summer, at night I use the 3d setting to bring in a little more cool air to help cool the house down. Blowing in filtered air is far superior to using an exhaust fan, because if you use an exhaust fan, then you suck air in through whatever dirty little cracks and openings might exist around your home, like under doors, so you get dirty air with an exhaust fan. Fantech makes a nice inline filter box, which can be used with this fan to bring in clean filtered air; mount the fan after the filter box to draw from the filter box and blow directly into the home. This ventilation method can be combined with an exhaust fan located in another part of the home, usually the bathroom, but just make sure the fresh air intake is equal-to or higher-than the flow of the exhaust fan to avoid sucking in dirty air through cracks.
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Reviewed in the United States on July 9, 2020 by Sunglass Evaluator
Size: 6-Inch
Color: Pro Speed Controller for S6
I'm very impressed and pleased with this 6" booster fan from AC Infinity. The user reviews were very helpful in my decision to purchase this blower. Especially the most-recent reviews tend to give a better picture of the item's performance. NO REGRETS! It was very fast shipping in a very well packaged box!!! You can tell when a manufacturer takes pride in their products just in the unboxing. Everything was premium quality! Specifically, the blower design is exceptionally well-designed and manufactured. The user manual was very good. Do read the manual first! This duct booster/fan can be mounted virtually anywhere in a number of flexible ways. In my case, the blower had to mounted between rigid 6" steel duct pipes. You might opt for the ~ 3" rubber adapter sleeves. I didn't and wish I had. But I was bent on getting the unit installed with what materials I had on hand. Not cobbled though! Anyway, if you must install the unit between two fixed pipes, first remove the blower proper from the main mounting bracket which incorporates the two IN/OUT adapter flares. Just loosen the two main banjo band clamps. You almost have to turn the screws all the way out before the bands can be pulled away. With the motor assembly removed, you can then mount the bracket sub-assembly to the ducts and secure that part of the set-up. Ingenious design that makes the rest of the assembly a "breeze", pun intended! Regarding the noise: I worked 35 years in noise & vibration control. There's no way this unit can be only 32 dB at typical or standard measurement locations. It must be rated such on the lowest speed. That said, the thing is still adequately quiet even at half-speed. And my basement bathroom is now toasty warm. Btw, I have this booster wired to come on only when the house HV blower comes on. It's nice that the digital blower control doesn't lose its setting. Everything on this huffer is top-notch and very well engineered.
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Reviewed in the United States on February 3, 2026 by NutDriver
Size: 6-Inch
Color: Pro Speed Controller for S6
I have a closet where I keep my NAS and a server. It was getting pretty hot in there. This boy running at only 3 has made a HUGE difference. Really easy to install. The hardest part was setting up the vent in the top and duct in the attic going to the outside. It works great and since I only need to run it at 3, you can’t hear it.
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Reviewed in the United States on August 17, 2026 by rr