The room temp. is maintained at a level that keeps the user(s) happy.
The CPU and system temps should run lower than 60 deg. C and 45 deg. C, respectively.
If either run higher than these, then either lower the room temp(an increase in the room temp. will increase the CPU and system temps), or improve the computer's cooling system by installing additional and/or higher capacity fans, more efficient heatsinks, etc.