So air conditioning - absent a circulation system that has access to cold air - will use as much energy to cool the air as the SP35 used to heat the air, which is basically all of the energy that went into the SP35. Computers radiate out more than 99% of the energy that goes into them as heat.

If you have an ability to pump in cold air, you may be able to reduce your air conditioning costs.

But if this is straight AC, then you will essentially double your energy usage. Right now, this SP35 will us roughly 2500 KW a month, and cost up to 2500 KW a month in AC. So that's a total energy usage of 5000 KW. 5.5 TH will make you $400/month right now.

So if your power is 10 cents/kwh, you'll be losing $100/month at a full 100% AC set up.

So presuming a slightly more efficient AC set up, you'll be breaking even. ie. The increase in your power bill will be as much as you mine each month.