They’re not pretty and almost always hidden from sight, but air conditioning and heating ductwork are now proudly displayed in many homes. Like exposed wood beams that have become so popular, the ...

In 1948, research by R.G. Huebscher established flow resistance for different shapes of ductwork at equal velocities, which allowed the creation of the duct-sizing calculator or “Ductulator” for ...

Airflow velocity in a residential HVAC market duct system is an important design consideration. Although designing for proper velocity applies to all ducted HVAC construction systems — heat pumps, air ...