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What happens if a conventional filter is installed backwards?

What happens if a conventional filter is installed backwards?

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HVAC
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Manage My Life
Conventional filters have an arrow on the frame that indicates the direction of airflow.

The filter is more likely to be pulled into the fan and become tangled if it is installed backwards.

Pull out the filter and make sure that the arrow indicating the airflow is in the right direction. Do not correct a filter installed backwards. All the trapped dirt will be released into the furnace if you do. Replace or clean the filter and then install it properly.
by Manage My Life
April 26th, 2007
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