AC InfinityCLOUDLINE PRO S6, Quiet 6” Inline Duct Fan with Speed Controller - EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

Hello, I figured I would provide some blower feedback in case anyone was contemplating buying and using this as I was. As a DIY builder I added on a couple large rooms and decided it was time to provide some heat and ac. I was able to tap into my central ductwork and run duct for my addition through my crawlspace. The new 6" run ended up being a pretty long 40 feet of ductwork. I initially did not use a duct blower but was pretty happy that my (already finished and being used ) bedroom that now had ac on these hot days. Problem was not much airflow and i had to run the ac much longer at a lower temp to keep my room cool. I looked at the box store duct blowers and decided it probably would not do the job. I searched on Amazon and many claimed to be way too noisy. Mine is in my crawlspace, but I still did not want to hear it. This blower got good reviews so I decided to add it. I installed it pretty close to the beginning of the run so it would push the air forward and hung in from a floor joist with straps. Many people state the y have to run theirs at 1/2 speed or less, I do not I run it at full speed . I hear absolutely no motor noise under the house at all. I do get a mild wind noise from the first vent , none at the second vent. As far as performance when I first fired it up within 30 mins it became the coolest room in the house, actually a bit cold. I have now raised my thermostat from 70 to 74 and it really has made a nice difference in balancing the air out in the house. Hoping for a very long term use out of this since it says it has all bearings on the motor.....so far very happy with it...another DIY success!

As with some other reviewers, I bought this fan to work with my xTool p2 Laser. Installation is super easy. The main hiccup was that if you use flex hose, the OD of this fan is 5.8", while the ID of the hose is 6". I had to cut a slot in the hose so the clamp could pull it tight around the fan housing.For the output, I was going from 6" to 3" because that's what I had already installed for the vent through my basement wall. I 3d printed an adapter that matched the 5.8" OD of the fan. Then I heated up the print with a heat gun to soften it, and formed it tight around the fan housing.While moving 6" of air through a 3" tube isn't optimal for CFM, it actually speeds up the airflow and I can watch any smoke inside the laser just get pulled right through. I barely notice any kind of odor from the laser now even standing right next to it, and it clears the enclosure completely of smoke in just 2 or 3 seasons.

Wanted an exhaust vent set up for my garage since it gets very warm while my EVs are charging, cracking the door open only does so much as the heat doesn't have anywhere to go. This blower does a good job sucking out all the hot air trapped near the ceiling and pulls in cooler air from outside. Its definitely a noticeable difference. 405cfm equates to about 8 room air changes an hour in my case.I have the blower mounted in attic over the garage so I'll see how well it holds up to the heat. I wont run it continuously, just over nights while im charging. I have it on a smart switch and it saves the speed setting from the previous time. This was a concern of mine since this has its own switch or remote, itll have to be toggled on/off with that and if power did get cut or shout off, it'd have to be powered on by the controller.....Luckily this isn't the case.So this will work on a switched outlet or on a smart plug without issue and resume the speed it was set at previously. Being in the attic, I can only hear from the air getting sucked in the intake or exhaust side vents, dont hear the actual blower motor itself. Wattage listed on this is inaccurate, on the blower itself states 72 watts. The Amazon listing states nearly half that as (average wattage). Ill be keeping mine on speed 8/10-maxed out so the 70watt usage is more accurate for my case. Perhaps Ill look into a DC motor blower if this one gives out on me.

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 speedsStrong airflow to keep miner room temperatures downSpeed controller included for precise adjustmentEfficient EC motor saves power over timeSolid build quality, designed for 24/7 use❌ Cons:Higher upfront cost compared to budget inline fansSpeed 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.

I just installed this AC infinity as an in-line HVAC booster. I had bought a Vevor first, and that was so loud and noisy, just turning the fan on it had a loud hum. Then I bought the AC infinity, it is so much better! Does not hum and blows more air at 3/4 power than the vevor did at full power, and did I say it’s way quieter!!! Since mine is in a crawl space I didn’t think I would notice the noise, but I definitely did. The controller is much nicer too! Well worth the money.