rig in air-conditioned home means your PUE (http://en.wikipedia.org/wiki/Power_usage_effectiveness) is 2. For comparison recently Facebook boasted that their coolest DC has 1.07 PUE and as another example my DC1 has PUE of 1.03.

PUE of 2 essentially means you pay twice for your rig's electricity. Not much to be proud of, really.