A bit of info on a/c type...
On small turboprops, you opened the door on the ground= A/C
Passed out blankets to the pax= heating
737: Too cold, call flight deck. Too hot, call flight deck, fan self with safety card
767: Close/open vents as required, pass out blankets, call flight deck
A330: Crank the temperature up/down in a zone as much as we liked; it would only go 2'C above or below whatever the flight crew set it to. So even if it said 25'C, if the F/D set it at 21'C, it would only go as high as 23'C or as low as 19'C, no more than that.
So, if you had a captain who was a reptile (i.e. cold-blooded) then too bad for you, you all froze!!
Some Airbus have the heated floor panels adjacent to the doors, the temps of these could be controlled as well for those pax & crew sitting there. Depended on the operator though, as to whether they installed and/or used them