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How Much Air Can the Ventline Vanair Trailer Roof Vent # VP-543SP Move

Question:

I was wondering if I could install this as a regular vent fan, but also temporarily connect the exhaust from a portable AC unit to it? Specifically Im wondering if it would let enough air flow through with the way the cover is designed. The portable AC units seem to have a 5inch round exhaust duct. I know I would have to fabricate a method of connecting that duct to the fan, just wondering about flow capacity.

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Expert Reply:

The Ventline Vanair Trailer Roof Vent # VP-543SP that you referenced can move 100 CFM. You would need to determine if that's enough air flow for the exhaust of your portable AC unit.

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Jameson C

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Follow up Questions

K. B.

It's not enough cfm. You will need a 5" unobstructed opening to move the hot air out efficiently. I've tried this already. The mobile AC unit will get hot after 1mim and shut the compressor off.

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