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Heating & Air Conditioning

Is it ok to replace 6" rigid duct with 6" flex?

6 years ago

My 6" rigid duct system has a lot of issues with rust and holes, and old insulation falling apart on it. I've been told to just replace it with 6" flex, instead of repairing and buying new insulation.

Would this be ok, or is there a reason not to do that? I believe that airflow is best in a rigid duct, but is it enough to worry about here? System is 2.5T, and ducting is in a crawlspace.

Thanks for any input.

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Comments (3)

tigerdunes
6 years ago
Where do you live? What insulation rating? ...Flex has come into its own and you can guess the reason why...
sktn77a
6 years ago
last modified: 6 years ago
Can you replace the 6" hard pipe with an 8" R8 Flexduct? Flexduct is OK if it's installed correctly (tight, straight. no sags or kinks)
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twintechhvac
6 years ago
Flex duct can be easier to install/cheaper and is a good option if you're just getting a portion of your ductwork replaced. If it's a large portion or is your entire duct system, proper installation can make either option doable.

Twintech Heating & Cooling

https://twintechheating.ca/

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