AC Infinity CLOUDLINE S10, Quiet 10” Inline Duct Fan with Speed Controller

The sad part about fans is they make noise, and it's hard to get away from that. I did measure a higher flow of air than advertised - a plus in the right direction. Easy to install and the fact that the fan has variable speed is also a big plus. Seems very well made, which means it should last a long time, check back in 15 years and we'll see how it did. Removing the fan unit to get to the mounting holes was real simple and the instructions laid that out nicely. I have another fan by this manufacturer in my greenhouse, and it works awesome. Was a good purchase - yep - a good purchase.

I liked the features of this fan, including the speed control. It's a superior design because it has rotor and stator blades inside the housing. This type of fan is quieter more efficient than a simple fan blade design, and it's similar to the ones we used on US Navy submarines. That should tell you they are quiet and move a lot of air. The housing on either end can be split from the center motorized fan module by removing a clamp. This allows for cleaning the fan or swapping out a bad motor. In theory, this feature simplifies a booster fan repair because once duct joints are assembled, especially in an HVAC system, they are difficult take them apart. I say "in theory" because you need to know how to use the clamps that hold the motor section to the inlet and outlet section. Loosen the screw until about 1/4 in of thread is showing below the nut. DO NOT unscrew the nut all the way. Leave the clamp assembled but loose. You sort of pop the clamp off, and when reassembling, you pop it back in place. It is similar to putting a bicycle tire on the rim. Note that the fan includes a second set of clamps, but these are used to attach existing ducting to the body of the fan. My application for this Inline Duct Fan was for HVAC ducts. Two legs of my system were fairly long and ducts were undersized. Installation was fairly simple. The set of steel duct clamps provided in the kit came in handy. I added mastic tape around the joint and activated the adhesive with hand pressure. Once attached, it's hard to take apart so I took my time to make a good seal and a mechanically strong joint. I needed to suspend my fan, so think about the mounting method before you get started. You could also use the metal bracket attached to the housing. I powered the fan with a relay circuit that energizes the booster fan only when the main HVAC unit comes on. I watched a YouTube video of someone else solving this requirement. I bought the relay on Amazon: RIBU1C Pilot Relay and use it to control both. At most, both fans draw 2 amps or less, well within the spec for this relay. After I finished the electrical work, I used the fan unit's 8 speed settings to adjust airflow and balance the HVAC system. I balanced the HVAC airflow by varying the speed on the fans. I have installed fans on two long duct runs. At fan speed 8 (max), the unit gets noticeably noisy, but it's also pushing a lot of air. You probably won't need top speed. In my system, setting the fan speeds at 3 to 5 balances the airflow. At this setting, the fan is very quiet and still pushes a lot of air. Airflow adjustments can be made with the speed controller. The rooms connected to the system are now much more comfortable. I'm ready for a hot summer!

I have bought a lot of in-line fans over the years and this brand is hands down the best. Higher CFM than hydro farm and others, looks better and A Lot quieter. The control has light on it but the cord is really long so it can easily go outside room. They include the Ducting clamps that you usually have to buy and the box even breaks down easily. Definitely worth the extra coupla bucks.

I was using this to replace a 16” surface mounted fan on a specialty waste oil heater. The original fan was very loud for the workspace, so I built a plenum and ductwork and relocated the inlet side to another room with this fan being the source. I was hoping for quieter operation and better airflow for a given wattage, and in that it was a success. I measured the wattage of this 10” fan on all of its ten speeds: 1 6W 2 11W 3 22W 4 36W 5 53W 6 75W 7 102w 8 148w 9 192W 10 249W

Love this fan. If noise is an issue, purchase a larger version, for instance if you don’t want it to sound as if a 787 is taking off inside your closet size up. I.e. if you need an 8 inch fan, buy a10 inch fan ( my personal favorite } and run it at a slower speed. In my opinion a push ,pull setup is best. Clean air in, clean air out. Balancing 2 fans can be tricky. So watch a video so you do not over pressure your room , stink gets out, or starve your exhaust fan. I am heavily invested in AC infinite fans and have several different models and I am happy with them all. Continuous run is not an issue, as I have had 2 ten inch fans and a 6 inch fan running day and night for over 6 months. P.S. if you have a power amp, especially a rack mounted power amp check out there line of home theater fans.

Lots of air flow just quite noisy on full power

I purchased this fan intended to boost 5 vent in 5 rooms. My 5 bedrooms are 40-50 feet away from the furnace and those rooms have been 4-5 degrees lower than other rooms in winter times. I have installed the 10" booster fan before the duct splits to the five rooms and I have first set the booster fan to its Maximum @ 266W. My furthest room's temperature is raised from normally 64C to my house's set temperature of 68C. I am a little skeptically before this purchase as I am not sure how this experiment will turn out but now I agree that this unit is worth the price and is a quality product. I tuned down the fan level by 1 level @ 196W to reduce power and the vent seems to be fine, I also installed an AC relay so that when the furnace's fan turns on, the booster fan will also be on. I have also removed the Duct in-line fan I previously installed that turns out to be too weak and not helping. There are 8 levels for this fan, and here are the power consumptions for each power level from a Kill-A-Watt meter. 1 - 12W 2 - 16W 3 - 29W 4 - 49W 5 - 81W 6 - 127W 7 - 196W 8 - 266W

This is my fifth AC infinity fan. The first four were so quiet I ran the 24/7. This one, and upgrade from a 6" to an 8" has a high pitch whine and does not draw noticeable air. I would not be able to hold a conversation with it on. The manufacture told me I would not need to buy the upgraded smart phone unit as my 6" one would work. Wrong, not only does it not work but the cord requires an adapter and an extension. In replacing the defective 8", the manufacture refused to allow me the upgrade, even if I would pay for it. 14 months in, the bid to install the replacement unit is over $350. Annoying. If you buy from AC Infinity, plug your unit in and test both function and sound before you install it.

This fan works well and does its job well. Though its rather loud on its highest setting, I rarely need to push it that high.

Great product and the quality was good. The price was just right. would purchase from the seller again

Strong but noisier than I expected.