AC Infinity CLOUDLINE PRO S12, Quiet 12” Inline Duct Fan with Speed Controller - EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

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!

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.

Gets air upstairs easily and is quiet

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

Silent motor, high cfm, good suction and pressure. Fan comes with 2 duct clamps, zip ties, velcro wire ties, lag bolts, sheet rock mounts for motor and controller, and a couple other goodies. I have a lot of Hydrofarm inline fans, 4in and 8in that i use For my kitchen, bathroom and shop exhaust fans. They are very good and i have yet to have 1 die on me. The AC infinity won me over today. Its pressure and suction are just as good or better than a same size hydrofarm, what i love is NO MOTOR NOISE. I dont hear the motor at any speed, just the fan and the air being moved. I have the 10in fan and the 10in filter box installed under my bed as an air filter. On the lowest setting i cant hear the fan under the bed, i do hear the air intake but i can easily box that in and make it silent.

I use this to move heat from one part of the house to another. The addition on the house is connected by a double doorway. The wood stove in the addition produces lots of heat but not much was transferring to the main part of the house. A smaller inline fan moved some heat. This larger fan moves much more heat efficiently and relatively quietly. The fan cost quite a bit more than the fan it replaced, but the expense was well worth it.

Love this fan, it does a great job, but I hate the noise it creates as you turn it up

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.

Strong but noisier than I expected.

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

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.