What Is Spiral Duct Work

About Spiral Ductwork Spiral duct is a rigid spirally wound tube usually made of galvanized steel, but can also be stainless steel, aluminum or copper. It has its seams on the outside, making the inside surface very smooth and having low resistance to airflow.

Is spiral duct expensive?

Getting something for nothing is rare, but by switching from traditional rectangular ductwork to spiral, you can do just that. Spiral ductwork is cheaper to install and cheaper to use throughout the life of the HVAC system.

Does spiral duct leak?

It has long been recognized that spiral duct systems leak a great deal less than comparable rectangular systems. This can be easily explained when looking at the source of leaks, seams and connections.