I have a 290 cfm remote, 4 port bath exhaust fan serving two bathrooms. The exhaust port is 6 inches in diameter.

I will be installing a 360 cfm range hood exhausting to 6 inch pipe.

Can I join both kitchen and bath exhaust pipes in the attic and have the exhaust for both run out the same opening in the roof?

chuckdua
06/24/2007

I don't see a problem with this
You may want to ask speedball in plumbing

Quote:

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Originally Posted by chuckdua

I have a 290 cfm remote, 4 port bath exhaust fan serving two bathrooms. The exhaust port is 6 inches in diameter.

I will be installing a 360 cfm range hood exhausting to 6 inch pipe.

Can I join both kitchen and bath exhaust pipes in the attic and have the exhaust for both run out the same opening in the roof?

chuckdua
06/24/2007

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If you do it that way then your kitchen will smell like a bathroom and your bath smell like your kitchen, the fans would push against each other's... it may be not up to code

I Don't Think There Are More Than 1 Fan, Its 1 Fan With More Ports To Vent Multiple Rooms

Quote:

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Originally Posted by chuckdua

I have a 290 cfm remote, 4 port bath exhaust fan serving two bathrooms. The exhaust port is 6 inches in diameter.

I will be installing a 360 cfm range hood exhausting to 6 inch pipe.

Can I join both kitchen and bath exhaust pipes in the attic and have the exhaust for both run out the same opening in the roof?

chuckdua
06/24/2007

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I thought he/she said 290cfm bath and 360cfm kitchen to the 6 inches vent

Your Right It Does Sound Like There Is 2 Fans. He Could Always Run One Of The Vents Out Through The Sofit, And Not Through The Roof.