Question

Why do A/C are kept above while heaters are kept bellow

Answer 1

This is because cool heat is heavier so it settles down quickly where as hot heat from the heater is lighter therefore it rises up warming up the whole room ! THANKS !

Answer 2

ANSWER___(◕ᴗ◕✿)

You can actually do that,Its useful to dehumidify the air so as not to let your breath's moisture fog the glass by condensing on the inside.
Generally the car is set up so that running defrost run A/C compressor and blows the conditioned air at the windshield.

MARK BRAINLIEST✓✓