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Old 09-04-2011, 10:21 PM   #1
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Vent out roof or wall?


Currently doing many renovations to our newly purchased house.

Two bathrooms need vents, both ducts will be tied together to a single exit. The kitchen exhaust fan will have it's own ducting and exit.

My question is, what are the pros/cons of venting through the wall and venting through the roof?

I understand the less turns the better it will vent, but are there any other considerations? Also, is there a rough estimate of how much a single 90degree turn will cut down the performance?

Thanks!

EDIT: Also, for both wall and roof exits, is there a certain type/design of vent cap I should use?

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Old 09-05-2011, 02:18 AM   #2
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Vent out roof or wall?


If wanting to vent both baths out of one vent, there are units that use a remote fan, and from there, you have the ducting from the baths go to the vent fan box, and then out of the structure. As for which is better, determines where you live. If you live in the snow belt, you do not want the exhaust venting out of the roof, due to snow may cover it. Do a search on bath exhaust on this forum, due to we have discussed it over and over.

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