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-   -   Metal Basement Duct work change out for PVC (https://www.askmehelpdesk.com/showthread.php?t=46350)

  • Dec 3, 2006, 10:34 AM
    Working_on_my_home
    Metal Basement Duct work change out for PVC
    I have a rectuangular suppluy and return system that feed from from furnace at one end of my basement. It has two main leads out. They branch off and finally reduct to a single duct at the far end of my house. I'm looking to put in a drop celling and would love to swap out my existing duct work with PCV, can I do that? Does anyone know pros or cons on this?

    Thanks
  • Dec 3, 2006, 07:02 PM
    NorthernHeat
    Probably not. I need to know more, how much do you want to swap out?
  • Dec 3, 2006, 07:59 PM
    labman
    What exactly do you plan? Any replacement ductwork would need to be the same size. Even slightly smaller ducts would be much more restrictive.
  • Dec 4, 2006, 07:48 AM
    Working_on_my_home
    I have a 12' section that I want to replace with possible 4" PVC pipe that I can route through my joists. This will allow me to put in a zero clerance drop celling and thus a bathroom in my basement. So I woul keep the current shet metal from the furnance/ac plenium out for about 10 feet, then convert to PVC or something that I can route through the joinsts fro about 12' then go back to the shet metal from the rest of the run.
  • Dec 4, 2006, 11:04 AM
    hvac1000
    PVC duct unless listed are not approved for air movement is a residential structure. I know of no pvc duct that is listed at this time. Fire hazzard will not maintail fire blocking between floor levels like metal.
  • Dec 4, 2006, 01:04 PM
    rickdb1
    You cannot go through the joists with anything.But you can go between them with ductwork... There are many sizes of metal ductwork that will do the job...

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