Re: ANTMINER S5: 1155GH(+OverClock Potential), 590W, Jan 12th Shipping [Sales Open]
I would suggest that the first thing to do is by hearing protectors. 
Haha, well we have the replacement fans ready to install. And these will be in a server room kept nice and chilly.
We will be selling off some of our B7 / B8 S3+ units to free up some PSUs.
Perfect condition, housed in Server Room at 64 F (approx) Hepa Air Handler. Clean and Like New.
I apologize if this is off topic but if there is any interest just shoot me a PM.
Strato
That reminds me, when I changed the fans on my S5's, I noticed these were "tested" in some very dirty conditions, the fans and heat sinks were covered in soot.