High Efficiency Air Distribution For Indoor and Outdoor Applications

Thermaduct provides high quality insulated ductwork systems to both interior and exterior installations. Our family of pre-insulated products are designed to increase the efficiency of the application with higher R-values and lower air leakage, while at the same time increase installation efficiency with lightweight duct systems that require no additional insulation or wrapping.

Outdoor Insulated Systems

Ductwork Designed for the Elements

Indoor Insulated Systems

Lightweight, Low Leakage Solutions


Designed for Aesthetics. Engineered for Performance

Thermaround is now available with a metal cladding with a range of enhanced weather resistant finishes each in multiple shades to complement different color choices.

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Why Thermaduct Outdoor Solutions?

As energy codes push the required insulation values higher and higher, the need for better outdoor duct solutions is growing.

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Why Thermaduct Indoor Solutions?

Low air leakage, IAQ duct solutions increase the energy efficiency and health of your building. Thermaduct is here to help.

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Frequently Asked Questions

Find out more about how our family of products can save you time, money and alleviate headaches on your next project.

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A Pre-Insulated Duct System Will Benefit Your Application

Thermaduct's family of insulated duct systems offer many great benefits for both outdoor and indoor applications. Whether on the roof, or inside the building a pre-insulated duct can cut installation time and save on long term energy costs.

Featured Projects:

In their second phase of construction, a food grade facility in Plymouth, Indiana chose InspiralR to provide their duct system above their production area. For their second installation, this application again utilized this round phenolic system with our patent-pending assembly process paired with food-grade lining, stainless steel couplings, and draw bands.

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Weatherproof Ductwork Exterior Applications

Superior Air Distribution

Our family of innovative, pre-insulated duct systems that support just about any application. All of our products use the highest quality closed cell phenolic to give customers the best insulation value without taking up valuable interior or exterior space. By ordering a Thermaduct product, you can be confident that you’ll receive a lightweight, low air leakage and high R-value product that is backed by a 10 year limited warranty.

We believe that high efficiency should not stop at your HVAC equipment, but rather should encompass the entire management of energy through intelligent controls and efficient air distribution. We offer a more efficient air distribution system, promoted by employing fiber free Kingspan KoolDuct. With higher thermal values and lower air leakage than traditional air distribution systems, you'll notice a difference with Thermaduct ductwork products for your indoor and outdoor applications.

With all of our pre-insulated systems, air passes over the smooth aluminum surface of Kingspan KoolDuct’s closed cell phenolic panels, with a variety of additional lining options should an application require it.