With their ageing HVAC systems, he says there’s “even odds” their flex duct is in a state of disrepair or dirty, bringing in continual business for the duct cleaner. “It's twofold. It's age. Usually ...

HVAC uses of flexible air duct have grown exponentially over the last two decades, all over North America. Contractors and installers say they like it, and some find it indispensable. It has changed ...

COLLIERVILLE, Tenn.--(BUSINESS WIRE)--Mueller Industries, Inc. (NYSE: MLI) announced today that it has signed a definitive agreement to purchase the Hart & Cooley Flexible Duct business.