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, even find it indispensable. It has changed the way architects design residential construction and how they engineer tall buildings, offices, stadiums, stores, factories, hospitals, schools, and shopping malls.
"Flex" has created the "technical home" whose appearance, roominess, and comfort - supported by technology - have changed traditional, centuries-old thinking about how we heat and cool dwellings and other buildings.