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Air Traffic Manager: Plenum

Written By: Danny Huffman

Published: Feb 6, 2026

Last Updated:

Understanding the basic concepts of air flow, building distribution boxes, and running flex is a must know how to do. HVAC Technical Academy insists all participants are equipped with the knowledge, skills, and abilities to design, build, and construct supply plenum.

For those uncertain of the importance and role of plenum, this is for you.

Air Traffic Manager: Plenum

Air Traffic Manager: Plenum

Air Traffic Manager: Plenum

For those uncertain of the importance and role of plenum, this is for you.

An HVAC plenum is a central metal or fiberglass chamber/box connected directly to a furnace or air handler that acts as a distribution hub for conditioned air. It manages air pressure and directs heated or cooled air into the ductwork (supply) or collects return air (return), ensuring efficient airflow throughout a building.

There are two primary types: the supply plenum, which distributes air from the system to the home, and the return plenum, which pulls air from the home back into the system.

In a way, supply and return plenum acts as a “traffic manager” for air, ensuring consistent pressure and temperature regulation.

At our workshop facility, we work with duct board (building boxes), including measuring and cutting, as well as the material use such as flex, mastic, tape, hangers, registers, and much more.

If you enjoy daily challenges, working with your hands, and never a dull moment, the HVAC industry may be a good fit for you and HVAC Technical Academy can get you there in under two months.

Danny