Product review (5 stars): Works for my Single Faucet Kegerator
I bought this just after getting a Kegerator. I had read that having a warm tower often results in too much head on first pours as well as warm beer. I balanced my keg system and installed this and haven't had a problem with either foamy or warm beer. This works as advertised. I got a smaller fan and it keeps the tower cool. I'm sure if I got one of the larger fans, it would probably keep the tower even colder, but that doesn't seem to be necessary. With my current setup I only have one keg/tap going at a time and this tower cooler setup works for my needs.

Also, I looked into what it would take to build one of these myself and the price of this unit is comparable, but kept me from having to make a project of it.