Why are air Conditioners installed neat the ceiling of rooms... give answer fast pl.
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it's because, when it is installed at a height it cools the air that is closer to the ceiling first and as we know hot air rises up because of lower density, the cool air comes down making the room cooler. this not only helps in cooling the room fast but also helps save electricity, and we all tryna save money

because hot air rises and cold air sinks. when cold air is blown into the room near the top, it will push the hot air away, and then sink down

Explanation:

is there a year set? the question is incomplete

answer; people have no objective standard by which to judge themselves;