Listen very carefully.  Everytime someone writes about air conditioning with regard to mining datacenters, they are crazy and they don't understand heat and heat transfer.

Semiconductors don't mind 100F.  Not at all.  Humans can't work in 100F.  Air conditioning is for humans.  Not for semiconductors. 
Don't buy a fucking aircondtioner for mining equipment.  Ever.  Air conditioners make more heat than they make cold.  True fact.

To cool a data center, 100F is fine.  The trick is, to move the heat away from the semiconductor - fast.  If you put a shitload of 100F air movement on the semiconductor it will be fine.  Put some freaking heavy wind on it.  If the wind is 100F, the semiconductor will only be a bit higher.  What you need is tons of air movement.- not cold. 

Don't believe me?  Heat a piece of metal until it glows red.  Then blow on it. Goes back to black real fast.  Stop blowing - red again. 

If you put a shitload of air movement on your miners you'll remove heat really well - even if the air is 100F.  If you use water or air conditioning, or ice or dry ice, all you've done is introduced tons of complexity and little heat removal.  The most efficient way to remove heat is lots of wind.  It doesn't matter what temperature the wind is.  Even the Swedish winter isn't cold enough to cool mining equipment.  You need to get the fucking heat away from the semiconductor.  This doesn't take cold - it takes heat movement.  Making 'cold' is hard work.  Moving heat away from an ASIC is easy.  Use 'wind' - not 'cold' to efficiently cool your miners.