bathroom fan duct questions


  #1  
Old 07-27-11, 03:26 PM
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bathroom fan duct questions

I recently replaced the bathroom exhaust fan in our house, and was just wondering whether it's typical and just fine to be using that 4" silver thin metal flex duct material for the duct, or is it that much better to use the smooth walled duct if possible. The existing duct material was the flex I mention, so I'm just continuing to use that since its already there and I didn't have any problems with it. It is a 7 or 8 foot run of duct there in the attic from the fan over to where it connects to the roof vent. Like I say I haven't had any problems with that duct material over the years but was just wondering if it would be worth all the hassle of trying to change it to the smooth ducting if it would make any significant difference/improvement, although not because I particularly need any improvement anyway. Also, is it true that the duct should be insulated (its not), and if so why. thanks
 
  #2  
Old 07-27-11, 04:48 PM
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Your duct size, material, and length of run sound good.

Insulation may reduce condensaton in the winter.
 
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Old 07-27-11, 05:23 PM
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Good to hear. Thanks, goldstar.
 
 

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