Question

how many unit consumed of exaust fan in one hour

Answer 1

hello friend here is your answer
it is depend on your fan 's moter
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Answer 2

hello mate,
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The amount of power consumed by a fan in an hour always depends upon the fan itself.

The size and strength of the fan is also important .

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the power consumption of fan is always given in the box or back part of fan .

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I hope it will help :-)