The climatisation effect from the heating coils seems to extend outside of buildings (even in open sky) and persists until you are far away from the heat source.

Heating coil is on in the brick building in the picture, but climatisation persists well outside of the building/chunk.

I’m not a contributor, but if I can ask what mod are you using that gives you all that information?

It's a command that's included with TaN.

"/tan tempinfo" will show/hide the information