Blows wrong direction
354630
This fan blows the wrong direction on my 2004 Dodge Dakota!  It was blowing the air out from the engine through the radiator instead of pulling air from the radiator to the engine, so I had to pull the wires out from the plug and reverse them.  Of course, I broke the little internal plastic piece that holds the terminals in there, so I had to tape it up really well to hold them in place in the plug.  The fan seems to blow pretty strong, but I wish it would have been blowing the right direction off the bat.  I'm not even sure if the blades are shaped properly for the way I have it blowing now.  I suppose I could have pulled the whole thing out again and flipped it around, but I think that would have created spacing issues with the way the tabs are constructed where the screws are mounted.  I don't think it would have sat the right way, so I would have had to break-out the dremel tool.
2319873
It blows air. It also rattles and I have three extra screws for some reason. The instructions are fairly comical, and completely useless. The "Low" setting is still fairly loud and strong. It's a good buy for the price, but don't be fooled into thinking you're buying quality.
2904073
When plugged in, the right angle turns to the opposite of what is in the picture so it would not work for my application.
3636627
I bought this even after reading reviews that it blew out quickly. I figured if I didn't turn it up all the way, it would be fine. Unfortunately that wasn't the case.
2825606
Takes odd routes and says make left turn when actually it should be a right turn and vice versa. A family member bought one same day and has returned it already
746328
The Valve is great but the inlet is in the wrong place and most ads don't show where the inlet is located, needed the inlet to be on
the left if holding the center port straight away.
3717550
The fan works, but the air that blows is not strong enough
2452819
Fan is either out of balance or it takes too much wind velocity to get the fan spinning. The altimeter also is incorrect. I should have bought a Kestral instead.
1276330
This unit sucks the humidity out of the air like a huge sponge.  However, it blows a ton of hot air in the process.  I wanted a unit to lower the water content of my room's air but keep the ambient temperature the same.  It certainly sucks the water out of the air but at the cost of adding 10 degrees to the room temperature.  Not what I was looking for.  So I sent it back.
1315230
The arrows on the outside point in the opposite direction shown in the picture (also opposite direction of my previous filter). I put the new filter in "backwards" since that seem like the correct air flow direction. The filter fits well and seem to be working.
3687727
two of the pictures in the directions are labeled backwards. I had to do some cutting and grinding on the plate to get it to fit right. Just go buy some pop on pod filters. Lost HP for some reason. Not blaming that on Barons but the rest...
2957958
Missing the absolute most important part.  Airflow direction.
After 2 hours of research I decided I'd rather not install than do it incorrectly.. seriously this is basics
1623545
AMD AM3 doesn't mount the proper direction by design which won't work because ram is in the way and it's still not an ideal direction for airflow. I had to return it. I have several AMD boards, none of them would work with this fan. It seems like it could have been designed to go any direction if they had thought about it more.
1360434
We got this fan for white noise in our bedroom, and immediately it had an inconsistent blow. It may sound picky, but because it's uneven, we can't use it to help us fall asleep since it goes from quieter to louder so randomly.
2291364
Got it for my Nephew on his Birthday, was really fast and a lot of fun until we realized it couldn't make a left turn at all. Me and my brother in law were looking at it trying to make sure nothing was tangled up and tried using the trim buttons as much as possible... but ultimately we just cant get it to make a left turn. Makes beautiful right turns and is really fast... but very disappointed that for the money I spent on this, it cant do a simple left turn.
4382642
I have to say I'm really surprised to see how highly rated this vacuum is given that it has what I would consider to be a pretty serious design flaw. If you look at the pictures you will see the air vents are on the side. What you can't tell, however, is that they actually blow the air forwards not straight out or to the back. And the air flow it is blowing out is very strong. So what ends up happening when I go to vacuum up the hair is that it gets blown out of the way rather than sucked up. If the hair is on fabric, it is fine. But when I want to vacuum the hair off my leather couches, much more of it gets blown in to the air than gets sucked up by vacuum. Very disappointing.
2392016
I installed these filters. Realized they have a major design flaw. As per Nissan manual, the filters should go in with the 'tab' down, so that they can be locked to the fan unit by a clip, which comes with the orignal filters. If installed this way, the FRAM filters go in with the air flow direction exactly opposite to the actual direction in which the blower blows the air. If you install the filters so that the air flow arrow on the filter is in the same direction as the fan blower flow direction, the filter tabs go on top and you cannot lock the filter to the fan unit. I had to tape the filters, as I could not use the clip, to avoid them becoming loose over period of time. As for the actual filter performance, I will have to wait and see. My next replacement probably will be the OEM Nissan filters, as the OEM filtes have almost twice the pleats, thereby more filtration.