Might I add that some countries are especially known for liking their internal temperatures more in the tropical range even when outside temperatures are around 10C/15C and just natural heat from people would be enough to make it comfortable.
AC is not a waste of electricity, quite the contrary, if it can be inverted (that is, pumping hot air in instead of out) then it's more efficient than electric heating.
AC is not a waste of electricity, quite the contrary, if it can be inverted (that is, pumping hot air in instead of out) then it's more efficient than electric heating.