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HVACTA: Plenum Progressing

HVACTA: Plenum Progressing

Written By: Danny Huffman

Published: Dec 3, 2025

Last Updated:

When it comes to system swaps, proper air distribution is essential to air flow and cooling efficiency.
One of the many hands-on tasks at HVAC Technical Academy is constructing supply plenum.

HVACTA: Plenum Progressing

HVACTA: Plenum Progressing

HVACTA: Plenum Progressing

A supply plenum is an enclosed chamber connecting directly to the outlet of an HVAC unit, such as a furnace, air conditioner, or heat pump. Its purpose is to act as a central distribution manifold, gathering conditioned air (heated or cooled) from the equipment and evenly distributing it to the various supply ducts that lead to different rooms throughout a building.

When it comes to airflow, the supply plenum operates at a positive pressure to push air out. To note, if there are improper installations, leaks can (and will) occur. When this happens, discoloration will result due to cold air hitting ambient air resulting in condensation… and even worse if not resolved.

Take a look at your air handler, if you see discoloration, you know what’s going on and it really should be fixed as soon as possible.

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 help you get there quickly, we are talking six weeks.

Danny