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Discussion Starter #1 (Edited)
I am thinking on using a dryer vent hose for my bathroom exhaust fan seen here

https://imgur.com/L3ZYSjS

But i am not sure if that is a hard outer casing or soft and if it would be a good product to use in my attic. It's about 25 ft long.

Or would i be better off using something like this:

https://imgur.com/LOnXhl1

They are both around the same price so that is not the issue. I just want something that will last as long as possible.

Your thoughts ?
 

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Should be insulated. Or else it can sweat badly in certain conditions.
Yup, I know first hand. When my house was built they ran two fan hoses into a Y and one up to the roof. The Y was metal and it sweated and water dripped onto the ceiling in the master bedroom. Had to touch up a freshly painted ceiling.
 

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Discussion Starter #4
Can you guys recommend some that are insulated and are no shorter than 20 ft long and they are 4 in in diameter? or would i be better off getting something 5 in in diameter. Your opinions are greatly appreciated. Pricing around $30 and preferably not more.

TIA
 

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I’m not certain of what you mean. Inside and outside of what?
The links you provided are regular drier hose. Not insulated at all.
 

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I’m not certain of what you mean. Inside and outside of what?
The links you provided are regular drier hose. Not insulated at all.
How do i tell which ones are then? As long as it says it is insulated in the description?
 

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Insulated flexible duct looks much different then standard drier hose.
It has a plastic main duct wrapped in fiberglass which is then wrapped in a plastic outer layer. It’ll be what you want to vent an exhaust fan in an attic.
Or use hard pipe and insulate it after your done.
 
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