He could be one of those who know how to steal electric. As for temps I agree and water cooling is cheaper in the long run than using a dedicated A/C. Blocks can be expensive but for you it will save you money.
yup, if I were to spend 1350.00$ on the GPU's alone I would not hesitate to put them under water. On air I wouldn't be able to tolerate the heat that is coming from the PC while pushing all 3 GPU's maxed out on 3 screens.. Hell no, my single 5850 can warm up the room when overvolted quite easily, I can only imagine what TRI-480's will do..