What is the section of ductwork called where supply air is distributed through the system?

What is the section of ductwork called where supply air is distributed through the system?

• A. Supply plenum
• B. Return-Air
• C. Filter housing
• D. Air handler

Answer: (A)

Supply air is moved from the air handler into a central chamber called the supply plenum. This plenum is a ducted box on the discharge side of the blower that accepts the air coming out of the air handler and routes it into the main supply ducts to distribute it to the rooms. It’s designed to keep air flow even and prepare it for branching into smaller ducts. The other parts mentioned aren’t the duct section that distributes supply air: the return path brings air back to the system, the filter housing holds filters, and the air handler is the equipment that moves the air, not a duct section.

Supply air is moved from the air handler into a central chamber called the supply plenum. This plenum is a ducted box on the discharge side of the blower that accepts the air coming out of the air handler and routes it into the main supply ducts to distribute it to the rooms. It’s designed to keep air flow even and prepare it for branching into smaller ducts. The other parts mentioned aren’t the duct section that distributes supply air: the return path brings air back to the system, the filter housing holds filters, and the air handler is the equipment that moves the air, not a duct section.