AC InfinityAXIAL 1225, Quiet Muffin Fan, 120V AC 120mm x 25mm Low Speed, UL-Certified for DIY Cooling Ventilation Exhaust Projects

Excellent air flow as you would expect. The best surprise was the sound level, or lack of! Totally silent. If you didn't feel the air moving, you would not think it was plugged in! I looked up the corresponding noise comparisons based on the listed 30db of the fan. Actually, it should be close to 0.

Bought two of these. Remarkably quiet fans, well built, ball bearing. One is used to provide gentle circulation for plant seedings. The second is used to blow air across a cutting board and away from me when cutting up onions - no more tears!

When used as an exhaust fan it moved the air from one room to another pretty efficiently. It was easy enough to set up. A couple things I would change about it though is to add a power switch on the cable and replace the long screws with shorter screws and removable rubber legs or something. It's been running for about a week continuously and not showing any signs of overheating.

Great little fan. Smaller than I thought.

I’ve always wanted to be able to close the cabinet doors while using my receiver. This fan allows me to exhaust the heat and bring in cooler air allowing my equipment to run cooler. I chose the quiet model and I can’t hear it with the doors closed. It came with an AC plug which I have connected to the switched outlet on the receiver.The installation steps were straight forward and would have been easier if I had been able to move the 200 pound tall cabinet that I installed it in. The fan case is metal as are the wire screens. Using the screen as a drilling template required no measuring. They recommend a hole size to match the fan case. That is 4.75” for the 4” fan. I was not going to buy a $30 hole saw for this one project so I made the hole 4” (the diameter of the blades) Packaging was excellent and I bought two so I have one for the next cabinet I build.

I bought this AC Infinity AXIAL 1225, Quiet Muffin Fan, 120V AC 120mm x 25mm Low Speed on March 28, 2019 to help cool the 3'x2'x6.5' cabinet below my 200 gallon salt water aquarium. As of today it has been quietly cooling nonstop for 2063 days with no maintenance. All while constantly being misted with salt water and sucking in hair from two long haired dogs and two cats. It just keeps going! It's still moving enough air to effectively cool the electronics, sump, and high power LED lights mounted under the aquarium. For around $20, this fan cannot be beat for CFM of air moved, it's small footprint, quiet operation, and longevity. I highly recommend this fan!For the curious: On the other end of the aquarium I'm running a AC Infinity MULTIFAN S2, Quiet 120mm USB Blower Fan with Speed Control to push all the air out. The air coming out is significantly warmer than the ambient temperature of the room. It's been just as reliable.NOBODY MAKES FANS AS GOOD AS AC INFINITY!

I purchased two 120mm fans from AC Infinity, one high speed and one low speed. The short story is that both fans are awesome quality. The high speed fan is a little too noisy for a living room entertainment center but makes some impressive airflow. The low speed fan is quiet enough to use in the living room, 6 feet away, and not make a noticeable amount of noise while still moving plenty of air. If you are looking for a fan, buy one of these.I built two stereo cabinets with intake filters and used these fans as exhaust fans. Since I had two cabinets, one for the shop and one for the house, I bought both the high speed and low speed fans figuring I would put the high speed in the garage if it was too noisy for the living room. Both fans are very high quality, sturdy aluminum surrounds. The high speed fan is about twice as thick as the low speed fan but otherwise they are identical. All the hardware necessary to mount them was included and mounting screws were long enough to mount through 3/4 inch thick plywood without problem.The high speed fan did turn out to be more noisy than I wanted for the living room so it ended up in the shop. The primary purpose of the cabinet in the shop was to protect the stereo from metal dust and other nasty garbage, but I have no doubt that a single 120mm high speed fan will circulate more than enough air to cool any electrical component or series of components you could assemble. I am using a standard 16 x 20 inch ventilation duct filter from the hardware store and the fan generates enough force to hold the cabinet door (20 x 24) shut with a clean filter. Even now that the filter is getting clogged with sawdust and grinder dust the fan is still moving air. The only downside is the noise. For comparison, if you have heard a PS4 switch from normal cooling to high speed cooling, that is about how loud this fan is.The low speed fan is perfect for my stereo cabinet in the house. It is quiet enough that you forget it's on as soon as you turn on the radio or TV and sit down on the couch six or so feet away. I have a receiver and a PS4 in the cabinet and the cabinet temperature has not risen above ambient enough that I can tell by feel, even after hours of movies or video games. This is in a small footprint cabinet with no room inside for internal circulation, so the PS4 gets hot very quickly without the fan on. I know the fan is doing all the work cooling and getting it done nicely.I have little doubt these fan will last for years based on the quality and they are definitely worth the price.

I like that this fan can run directly off A/C. Installed in my Home Theater cabinet, it makes both a pulsating and steady monotone sound. Unfortunately this distracts during quieter moments in movies and TV. I am ordering the USB variable speed model to see if it helps and will probably move this one to the alarm and house wiring cabinet which has a network switch in it, since that is in a closet the noise should be more muffled. My recomendation to manufacturer would be to offer a variable speed option and then this would have been 5 stars. The included fan grills and mounting hardware were all great but the bolts were extra long and stick out about 3/4", if you are mounting on thick wood though you would probably need that vs plastic or a thin Home theater cabinent backing, maybe including several sizes could be an option. They opted for long which is certainly better then too short. Anyways 3 as Its still useful and reasonably priced but just not good for my application where I want low noise.