Building below the frost line apparently results in a steady 55F temperature. http://en.wikipedia.org/wiki/Underground_living http://en.wikipedia.org/wiki/Under

Building below the frost line apparently results in a steady 55F temperature. http://en.wikipedia.org/wiki/Underground_living http://en.wikipedia.org/wiki/Underground_living http://en.wikipedia.org/wiki/Dugout_ http://en.wikipedia.org/wiki/Dugout_(shelter)#American_Northwest So maybe all you need to do is burrow in and house your servers in a covered clay pit in the basement?