But if you're concern with the temperature in your case, like Chuckshissle said, you'd be better off sticking fans in the case to suck in and out air to ensure efficient air flow.
It basically uses the peltier effect and blow the cold air into your case. Depending on if its avaliable at where you live, you might want to give that a try as well.
Nice cases, but $259.95 for a case is crazy, I rather buy Pentium D 930.
Well if I open my case, temp is still 38-40C, many fans will be very noisy. I'm avoiding AC coz I want to save money.