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 ...

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 ...

Question: I had a high-efficiency furnace installed last year and I have a gas water heater as well. I didn’t get a hard sell from the furnace seller about back-draft problems, but he did mention it ...