I'm very fortunate in that, having my own office, I have my own heat/air conditioning unit.  Bossie has the same set up.   The only "problem" with my office is that it is a corner room so has acres of windows.  This is very nice except that in winter it can be a bit cold sometimes.

We have a mixture of offices and open-plan work stations.  The open plan bit is divided into three zones with separate heating/air conditioning for each.  Anyone can go and change the temperatures.