Today I get my ducts cleaned. It's extremely dirty. And I noticed my house which was built at 2003 was using plastic flex ducts.

I just feel metal duct are stronger and easier to clean and never broke.

So does it make sense to replace the plastic ducts with metal? Can I do it by myself usually? I mean do I need permit or inspection? My plan is to slowly replace them by myself.

Any comment is appreciated.

1 Answer 1


Metal will require insulation on the outside if it's in unconditioned space; not hard to do. A plus would be metal ducts have less air resistance because of the smooth sides. I am not aware of a need for a permit for duct work.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.