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AC Infinity

AC Infinity RAXIAL S6, Inline Booster Duct Fan 6” with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops

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Availability: 15 left in stock
Fulfilled by Amazon
Arrives Tuesday, Oct 6
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Size: 6"


Features

  • A duct fan designed to increase existing airflow in HVAC systems and ventilate home spaces like attics and workshops.
  • Features a variable fan speed controller, enabling you to optimize airflow and noise level for any application.
  • Unibody die-cast construction with no welded seams; reduces vibration while ensuring smoother airflow.
  • AC brushless motor with steel blades and lubricated bearings; not suitable in restricted airflow applications.
  • Duct size: 6 | Dimensions: 7.28 x 5.90 x 5.90 in. | Airflow: 265 CFM | Noise: 35 dBA | Bearings: Dual Ball

Description

Product Description An inline fan for duct boosting designed to improve airflow in heating and air conditioning applications, and ventilate home rooms like attics, workshops, bathrooms, and kitchens. Each fan uses an easy-to-use knob controller that adjusts fan speed for your specific airflow-boosting needs. It features a unibody framework that helps reduce vibration and ensures smooth and low-resistant airflow. The matte black steel cylinder is fluted and ridged for easy and secure installation in between ducting. Its balanced steel blades have a 67,000-hour lifespan and spin using permanently lubricated dual-ball bearings to eliminate regular maintenance. This kit includes one AC-powered inline booster duct fan, a speed controller with a power plug, mounting screws, and a cable management set. Speed Controller The inline variable speed controller can control the can fan’s speed and turn it on or off. Turning the knob will increase or decrease the fan speed and optimize airflow and noise levels for your application. Its speed range includes a low, medium, and high threshold, producing up to 265 CFM and 35 dBA in noise. Applications This versatile inline booster fan is made to be installed in between ducting for various applications that need improved air delivery. In households, it boosts airflow from HVAC units to remove stale air and odor, ventilating attics, workshops, kitchens, basements, etc. In grow tents, grow rooms, and indoor gardens, it’s primarily used as an intake fan to bring in fresh air. Please note this booster fan cannot be used standalone in high static pressure applications like room ventilation. Additionally, it is not suitable for use in applications with restricted airflow like systems that use carbon filters. For higher performance, see the CLOUDLINE Series. A line of duct fans designed to be set in between or at the ends of ductwork to increase airflow in existing HVAC projects like grow tents and other ventilation setups. This booster fan boasts a matte black aesthetic that expresses the heavy-gauge construction and its high quality. The galvanized steel body has no folded seams, enabling the fan to perform with low noise and no rattling. It also features crimped ridges on the exhaust end for a tight, secure grip on your flex or rigid ducting. All models include a speed controller to optimize airflow and noise. The soft rotating knob provides ease of use and quick responses to changing conditions. Uses an AC motor that spins smoothly and relatively silent. Capable of high airflow boosting in applications like active intake for grow tents. Features a 67,000 hour lifespan, using balanced steel blades and lubricated ball bearings that eliminates the need to maintain the fan. AC Infinity is a technology company that specializes in environmental controls for audio/video and HVAC. The company was founded on the principle of working closely with customers to develop great products. Dependable service and a commitment to product quality are the foundations of the business's values. Visit the Store Visit the Store Visit the Store Visit the Store

Brand: AC Infinity


Color: Black


Electric fan design: Blower


Power Source: AC


Style: Duct Fan


Product Dimensions: 7.28"D x 5.9"W x 5.9"H


Room Type: Basements, Bathrooms, Kitchens, Workshops


Special Feature: Speed Controller


Recommended Uses For Product: Indoor


Mounting Type: Wall Mount


Power Source: AC


Room Type: Basements, Bathrooms, Kitchens, Workshops


Special Features: Speed Controller


Recommended Uses For Product: Indoor


Mounting Type: Wall Mount


Controller Type: Button Control


Number of Speeds: 3


Noise Level: 35 db


Wattage: 37 watts


Number of Blades: 6


Air Flow Capacity: 265 cfm


Voltage: 120 volts


Indoor Outdoor Usage: Indoor


Control Method: App


Standby Power Shutoff: High, Energy Efficient, Cost-Effective


Number of Power Levels: 3


Motor Type: AC brushless motor


Installation Type: duct-mounted


Material: Alloy Steel


Blade Material: Plastic


Specification Met: CE


Color: Black


Electric Fan Design: Blower


Style: Duct Fan


Finish Type: Matte


Collection Name: Home


Item Dimensions D x W x H: 7.28"D x 5.9"W x 5.9"H


Item Weight: 3.3 pounds


Cable Length: 3 feet


Size: 6"


Brand Name: AC Infinity


Included Components: Cord


Model Name: AC-RXS6


Model Number: AC-RXS6


Manufacturer: AC Infinity


UPC: 819137021112


Global Trade Identification Number: 12


Unit Count: 1 Count


Part Number: AC-RXS4


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 6

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.

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Top Amazon Reviews

    • Nice fan, quiet depending on how you install it.
Size: 4"
Have this hooked up to the far end vent for a Bambu P2S printer to exhaust toxic fumes. Yes the instructions say don't use this for toxic fumes but I figured if thousands of others have been using this for their printers over the years it must be ok. There aren't a ton of toxic fumes, and they're not flammable fumes either. I would not use this for flammable fumes. It moves a decent amount of air once it gets to the midway power setting. On max it move a little more but this doesn't need to be hair-dryer speed to do it's intended job. Yes it's a little noisy if you don't have any vent tubes hooked up to it. I have it midway on power and connected to a flexible 4" dryer duct on one side and a tin dryer duct on the other. I can hear it from 5 feet away but barely. If you've ever been next to a RADON fan it kind of sounds like that...super muffled. It's right below our master closet and if I stand in the closet and purposefully listen, with no other noises going on, I can barely hear it but I know what I'm listening for. The spousal unit has not noticed at all, and she's in there a lot. I think that's her safe space, not that she needs one mind you. But with the clothes everywhere it helps to shut out distractions and noise and I see how it can be calming to hang out in there. Back to the topic--Once you turn it on it seems to start at 100% power, then quickly lowers power to wherever you have it set. Nothing wrong with that, just wanted to point it out. I have it plugged into a smart receptacle, so I can turn it on from afar. Should come in handy if I forget to turn it on and start a print and leave the house. Can also monitor energy usage, but I don't think it draws much. The housing is exactly 4" diameter, the exact same as most hard/tin 4" ducts. This is a little annoying. I have it connected directly to an outdoor dryer vent, and the tube that came with that vent is the exact same size as the housing, so I had to buy a short super thin adapter and clamp the vent to the adapter, then the fan to the adapter. I did get a 4" flexible dryer duct attached to the other side, little challenging but it fit. I only use about 4ft of the flexible duct, then it goes to hard duct and runs across the room to the printer. ... show more
Reviewed in the United States on March 17, 2026 by spaceghost
    • Worth the cost.
Size: 6"
Works well for price point, not had any issues with it, dial for speed control functions well.
Reviewed in the United States on June 13, 2026 by CC
    • Not sure about the noise level
Size: 6"
I bought this S6 fan to create some circulation in my basement The fan works well and seems to be well-made. My basement is about 2000 sq feet and is chopped into these three main areas: Space A. Unfinished area (about 350 sq feet) Space B. Main living area (about 1200 sq feet) Space C. Exercise/rec room. (450 sq feet) Space A connects to Space B via a door. Space B connects to Space C through another door. Space C does not connect to Space A directly. We have a humidity/mold problem throughout the basement, so I installed a dehumidifier in Space A. I wanted to pull air from Space C over the wall into Space A then push it out to Space B and back to Space C to complete the cycle. I am hoping that by circulating some air through space A the dehumidifier will dry out the whole basement over time. My dehumidifier is rated to process 160/190 cfm on its two speed settings. So I bought this 265 cfm AC Infinity S6 fan and 8' of 6" flex duct from AC Infinity as a circulation fan. My configuration is as follows: I cut a a 6" round opening in the Space C ceiling. I put a 90" hard elbow there and attached the 8' of 6" duct that terminates in Space A. In Space A at the other end of the duct I mounted this fan onto a 12x4x6 90-degree register box and a 12x4 diffuser. I hope to pull over some air from Space C past the dehumidifier. Issue: After completing the install, the noise level in Space C at all fan speeds (where the intake vent is) is higher than I would have liked. I measured some dB readings with my iphone app and here are the results. [NOTE: For reference, in this next part I am looking at the speed control's dial like a clock face, where you have the "off" position at the 6:00 (bottom) position. Then "Low" is at 8:00. "Medium" is at 12:00 (top). And "High" at 4:00 position.] While the controller seems infinite, there are really only three or four distinct areas of power/noise: At the 8:00 and 9:00 position, the noise level in space C is about 40 dB. At 10:00 position it jumps to 49 dB (nearly ten times louder). At 11:00 - 12:00 it is about 52 dB. Then at the 1:00 position it jumps to 54 dB and doesn't really get much louder from there. Recall that the dB scale is logarithmic, not linear. If there is a relationship between noise and cfm, then between the 1:00 position and 4:00 position, it seems there is very little air volume increase. I am not an HVAC engineer nor a sound expert, but it seems you have a low 40-ish dB setting, a low 50-ish dB setting and then a 54 dB setting, all as measured on the inlet-side vent, which for me is 8' from the fan. I would like to make it quieter in Space C because my wife spends a lot of time down there, and she doesn't tolerate noise well. I don't really care about the noise level in space A, as it is not occupied and the dehumidifier (generating 52 - 54 dB) is in there too. But for reference, with the fan attached right to the register outlet box, the noise levels in Space A (without the dehumidifier running) are 2 - 4 dB higher than the above readings from under the inlet vent in Space C. Note: I have 9' basement ceilings, and I took all measurements directly beneath the vents at 5' up from the floor. Not a scientific result, but I hoped to give you all some idea of the noise levels. ... show more
Reviewed in the United States on September 5, 2021 by KWC Indy
    • It cost a little bit more and is completely worth it!
Size: 6"
I did a great deal of looking around the internet for user feedback on this fan. What I found was not stellar. However, nobody was steller that had significant feedback. The cheaper units had worse ratings. So, I went with this unit and paid a little extra. I'm quite pleased with this unit after receiving and getting first hand experience. I will list below what I found. 1. Built well and not flimsy. Not a peice of junk! 2. Not excessive fan noise like some of the reviews. The fan noise was not a problem at all. The house HVAC is louder than this fan on full setting. 3. Did not measure the CFM. However, output was more than the replaced fan while being quieter. 4. I cut off the speed control and operated it at the full CFM @120VAC. The speed control worked just fine. But, I didn't need that. ... show more
Reviewed in the United States on April 30, 2026 by Mark Robertson
    • Great 6' Blower Fan
Size: 6"
Used this fan to build a DIY Laminar flow hood. Quiet enough for my use.. Works great with speed controller means i had to do no wiring just plug and play.
Reviewed in the United States on June 19, 2026 by Bread
    • Sturdy yet weak air flow, little bit loud.
Size: 6"
Sturdy yet not as much air flow as expected, and bit louder too.
Reviewed in the United States on April 21, 2026 by FlakyGenius
    • Well built and moves a lot of air.
Size: 4"
Good, solid construction. Moves a lot of air. The fan itself is no joke, so if you use it to vent a grow tent like I so you may want to cover the outlet with mesh. My only (minor) gripe is that there are only three available speeds instead of a potentiometer you can dial in more precisely.
Reviewed in the United States on April 19, 2026 by T. L.
    • High Quality and Easy Install
Size: 6"
The Inline Booster Duct Fan 6” was well package. I like that the body has no seams. It's all one piece. Fan seems higher quality than the cheapo replaced that was 1/2 the CFM. Used it on my HVAC duct work coming from the furnace. Short run with 3 elbows. Was a little surprised the existing fluted 6" furnace pipe would not slide into the wider side of the fan housing. Ended up working out great as the fan can fit into a pipe that is cut in 1/2. That way you can expand the pipe outward from the fan body as needed and you can get it into really tight spaces. Make sure you have some aluminum tape to seal. Fan on max I'm guessing tripled output. Noise not much different than existing sound from vents at least for me as furnace in the basement was not too far from 1st floor room. If you have loose duct work, that volume of air pushed might make more noise. I don't. ... show more
Reviewed in the United States on January 14, 2025 by JM

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