Thermaduct is a nationwide manufacturer of outdoor and indoor phenolic pre-insulated ductwork with our fabrication headquartered in Perrysburg, Ohio. Our story began in 2004 when we were first introduced to premium performance pre-insulated Phenolic Ductwork, an alternative material to traditional sheet metal that offered lower embodied carbon, consistent insulated values and lower air leakage without the need to insulate ductwork. We saw the benefits of this lightweight material and began to re-center our company around this insulated duct technology as it entered the United States.

With a focus on helping the construction industry realize a lower carbon future, Thermaduct’s pre-insulated phenolic products have provided both outdoor and indoor applications increased efficiency for long term benefits for the installation. Our products, including Thermaduct, Thermaround, InspiralR and Floval, meet the needs of many applications that require rectangular, round or flat oval insulated ductwork.

With nearly two decades of experience, Thermaduct products are now fabricated in SMACNA contractor facilities across the United States and Canada and sold through a network of manufacturers representatives who have joined us on our mission to bring low carbon duct solutions to the market. As the market turns to decarbonization and more energy efficient products, we continue to be a driving force in changing the HVAC Industry for a better future with phenolic duct.