Question

room heater should be placed at ground level and air coolers higher up in the room why​

Answer 1

Answer:

to get more heat an more cold

Answer 2

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you are welcome in May ans

room heater placed at ground level because heater makes the air hot and lighter if it kept above like Ac then air escape above not downwards .

Coolers kept higher up because cooler give moisture in air and due to this air become heavy and it goes downward

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Hope it may helps you✊✌️