AC InfinityAIRPLATE T7, Quiet Cooling Fan System 12" with Thermostat Control, for Home Theater AV Cabinets

I installed these with relative ease, including a 2 fan expansion for the other cabinetAC Infinity AI-CFD120BA Dual 120 Quiet Cabinet Fan, Black, for 4 fans total. The control unit is simple to operate. So far the performance seems to be good enough but the noise is troublesome. At low and medium, both pair of fans have a bit of a rattle, grinding sound. At high all you hear is the purr of the air (which is still quite loud). I've built PCs before and fans should not sound like this, especially at low speed. I couldn't put the thermal sensor directly over the hottest part of my amp, as it would reflect a higher temp than the ambient air and constantly run on high ("smart mode"), so probe placement is important. My entertainment center is very much enclosed, so I feel like the performance is a bit hindered without an intake. It seems like it has to run a little harder than I expected to keep the temp around 75, even without pushing my amp.I have an Onkyo receiver, XBox, AppleTV, modem, and router in one cabinet (with the probe). A DirecTV box, bluray player, and XBox Kinect in the other.In all, I'm somewhat satisfied, but am left wishing for a quieter system that doesn't have to run as hard. With quieter fans, I'd rate 4.5 stars.*****UPDATE March 2, 2015*****AC Infinity has just shown some of the most incredible customer service I've received in many years. After posting my initial 3 star review on Amazon, I was contacted (within just a couple of days) with information that they had discovered a hardware bug in the thermostat controller that is the cause of the grinding fan noise, and that they have the updated model rolling out of the factory. They immediately shipped me one priority mail, which I installed today when I got back from my vacation. I am pleased to report that the low/medium speed fan noise is resolved and the only noise I now hear is the whir of the moving air. It sounds exactly as I would expect it now.As a bonus, the back-light on the display (which was always on even if the system was idle, and is quite bright) now has a timeout function. Although I didn't note this as an annoyance in my original review, after having it for a while, the bright light at night was a bit distracting. This product improvement is just another example of a company paying attention to what reviewers have to say about their products and making it right.Oh, and Jeremy with AC infinity sent a letter with the replacement apologizing for the inconvenience and also left me a voice mail while I was on vacation asking how the updated unit worked. I think that's pretty incredible in this day and age. Needless to say, I'm updating my review to 5 stars.

This thing rocks! I needed something to cool my new home theater rack with a glass door. It is now much warmer inside the unit than the previous "monster" rack I had with open shelves. I looked quite a bit but kept finding all kinds of fans for computers. I needed one like this that didn't need me to wire anything and I could plug into the wall. An added bonus to me is the thermostat controller.I didn't do anything fancy. I just drove a couple of finishing nails into the back of the shelf above my receiver and hung the fan assembly on the nails. The package does come with nice plastic templates to cut precise holes for the fan assembly and the thermostat if you want to mount them in a totally enclosed cabinet. Mine has open shelves in the back, I just wanted to move some air.The USB cord between the fans and the thermostat is long enough that I could place the thermostat controller on the top shelf next to my Monster Power supply with some leftover. The power cord from the thermostat with the little brick or wall mushroom is long enough to make it to the wall outlet with no problem. I set the thermostat controller on the shelf and it looks fine. There is a temperature probe wire attached to it that I hung down the front of the shelves to measure the temperature inside the cabinet.The first time I used it while watching a movie, I was not satisfied with the amount of cooling. Reason, I had the fans blowing into the cabinet over the receiver. This was maybe cooling the receiver like I wanted but it was just blowing a lot of hot air up over the rest of the electronics stack. I pulled the fan housing off the nails, turned it around and hung it back on the nails in the opposite direction to exhaust the hot air off the receiver out the back of the cabinet. That did the trick. I was able to set the temperature down to 76 degrees (my choice for now) and it easily holds that temperature. The temperature probe by the way is hanging just above the receiver. I am confident that it is being cooled like I want now.I've watched 4 or 5 movies since installing this unit and it does not make any perceptible noise when my home theater is blasting away. It maintains the set temperature steady as a rock! I keep it running after I finish watching the movie to allow the unit to cool down after I shut everything down and the fans are very quiet. Then I just have to unplug it from the wall.I am very satisfied. This thing was easy to set up, cools adequately and is quiet. The thermostat controller does have 2 USB ports so that you can add up to two more fans if you need more cooling power. I have had no problems with this quality product. If I do decide I need another fan, I would not hesitate to order another one.