I recently purchased this in preparation,

http://www.amazon.com/gp/product/B0028AYQDC/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

Right now I'm running BFL Singles, Asicminer blades and cubes, and Antminer S1 hardware.  The calculations show I'm producing around 14,000BTU so I'll probably start shutting down all the less efficient hardware first.  I'll probably power the cubes off first and just keep going until the AC is able to maintain 80F without running constantly.  I'm estimating I will be able to consume 3000W at the wall and properly cool the room.  If I shutdown everything but the Antminers then that will just be 2000W of consumption and leave me with 1000W for new hardware.

When winter returns I can start ramping up again.