Flexible HVAC ductwork was first patented in 1965; however, the underlying technology has been used for more than 150 years in the form of flexible air hoses for connecting train cars, flexible metal ...

In David Monson’s region of New Hampshire, the Armstrong Duct, Vent, Hearth and Home operations lead says he often works on what he calls “Brady Bunch” houses – homes built in the ‘60s, ‘70s and early ...

Q: What’s the best kind of ductwork to do when building a new house? Should ducts be rigid metal or should you install flexible ducts? A: Most of what’s being installed in new houses now is flexible ...

Homeowners will typically pay between $268 and $492 for air duct cleaning; the national average cost is $379. Several factors affect the cost of air duct cleaning, including the size and type of ...