To fully understand how to install a high-velocity HVAC system, one must know what it is and what it does. Basically, it is a small duct, high-velocity airflow, heating and cooling system designed to ...

As many contractors attest, a supply air plenum is a sheet metal box attached to a furnace or air handler’s outlet and is used as a central manifold connector for other ductwork. As the air blows from ...

With Cat. 5e or Cat. 6 cabling now being installed in most new construction projects, some changes in installation methods are in order for slab-on-grade floor boxes with communication outlets.