Supply Plenum vs Return Plenum: What’s the Difference and …
Jul 31, 2025 · The supply plenum is essentially the main air distribution box connected to the output side of your HVAC blower or furnace. When conditioned air is heated or cooled, it …
What is a plenum? HVAC terms explained
On the supply side of the air handler, the plenum takes the newly warmed or cooled air and leads it into your ductwork. This is how the air from your HVAC system is distributed throughout your …
What is Plenum in HVAC and Why It is so Important
Jun 3, 2025 · Supply Plenums – This metal box is placed at the beginning of the ductwork where it’s attached to the supply outlet of HVAC equipment like central heating and air units and …
What is a Plenum in HVAC & Why Is It Important | Anderson Air
Just as its name goes, the supply plenum is a box in your HVAC used to distribute fresh air into a building or exhaust the unclean air. It allows for the exchange of fresh air and exhaust air in an …
What Is a Plenum in HVAC? | Angi
Aug 20, 2025 · A central HVAC box, the plenum balances and distributes air throughout your home’s duct system. The supply plenum distributes conditioned air evenly into your home’s …
What Is a Plenum Box in HVAC? A Beginner-Friendly Breakdown
Aug 20, 2025 · Think of it as the “traffic controller” of conditioned air. The supply plenum distributes heated or cooled air from the HVAC unit into the ducts that lead to each room. The …
Plenums, a Comprehensive Guide - GreenDuctors
Nov 11, 2024 · As you may guess, the supply plenum is connected to the supply unit of the air conditioner, furnace, or heat pump. It ultimately helps distribute air throughout your home or …