From the mid 1950s through the early '70s, many forced-air heating systems had sheet metal air ducts that were insulated with a cardboard-like material containing asbestos fibers.

The spiral ducts are Air Movement and Control Association International (AMCA) certified for air leakage and licensed to bear the AMCA seal, which provides third-party verification that the ...

The ductwork meets Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) leakage class 3 integrity from -20 to 12 inches water gauge. According to the manufacturer, with the ...

One overarching choice in ductwork falls between metal or flexible as the primary construction material, each with pros and cons: Metal Ductwork – Very efficient, durable – Transmits more noise – ...

Energy Star estimates that 20% to 30% of the air that moves through residential ductwork is lost through “leaks, holes, and poorly connected ducts,” accounting for a major loss of energy.

A free Georgia program is helping young adults learn math, metalwork, and career-ready skills to land jobs in the high-demand sheet metal trade.

Sheet metal workers must have a strong understanding of how to build things, such as air ducts, siding and panels, and install them. They should also have solid critical-thinking and math skills ...