Or you could rent the machines you build like the cloud hashers do... possibly.

http://www.alibaba.com/product-detail/Bitcoin-Litecoin-DOGECOIN-combo-ASIC-Mining_156151732.html


Hmmm......

For my mining rig (various hardware including GPUs)

I just keep my room cold in... It sits around 25-40 degrees F, I prefer not to leave my machine by any windows without protection against condensation.

I would  also add an extra mesh if you are just using a normal window screen. I use a compressor often as I live in a populated desert and the there is dirt flying everywhere some days. otherwise my macchines are fine at 60-75 degree Celsius temps easily during the winter.