That's nice for heat, but thermal mass means that air conditioning is most efficient when it can get the whole room to equilibrium and then shut off. Like a car coasting going down a hill.

The mantra I've heard is "move heat (energy) don't make it". Don't burn or even use renewable enery to generate heat but move heat already present. Move it away to cool and move it towards somewhere that needs heat.

Maybe you should drink tea. It would warm you up and supposedly tea has mild blood "thinning" properties. You're not supposed to drink tea if you're going to have surgery.

For air conditioning the best part of it is the dehumidifiation. It doesn't need to be arctic cold just the dryer air and a bit of cool is OK.

My wife and I live in Hungary. Every so often we visit Phoenix, AZ in the summer to see family. (My wife is a teacher so it makes sense to go in summer) and the hardest thing for us to do when we go out to eat is finding a restaurant that has seating where we are not freezing cold. It will be 40+ outside and 20 inside.

So many times I see the opposite: of its hot out then people crank the AC to coldest setting and if it's cold out then crank the heat up uncomfortably high. It drives me nuts: I don't have an extra layer with me in the summer and I'm freezing in the store/theater/restaurant. I can only hope that this is an American peculiarity.

At my office the climate control is considered adequate if it is 68 or above in winter, and 78 or cooler in summer.