Where can flexible ducts be found?

Where can flexible ducts be found?

• A. In the crawlspace, suspended from the floor joists
• B. Only within finished ceilings
• C. Inside the walls as primary ducts
• D. Outside the building under the eaves

Answer: (A)

Flexible ductwork is used to simplify routing in tight or obstructed spaces. A crawlspace is a common path because ducts can be easily hung from floor joists, run between supports, and connect to the air handler and registers without needing extensive rigid duct fabrication. This setup keeps flexible ducts out of living spaces where they’re less ideal and avoids running them through walls as primary ducts or exposing them to exterior conditions under the eaves. So the crawlspace option—ducts suspended from the floor joists—best matches how flexible ducts are typically installed.

Flexible ductwork is used to simplify routing in tight or obstructed spaces. A crawlspace is a common path because ducts can be easily hung from floor joists, run between supports, and connect to the air handler and registers without needing extensive rigid duct fabrication. This setup keeps flexible ducts out of living spaces where they’re less ideal and avoids running them through walls as primary ducts or exposing them to exterior conditions under the eaves. So the crawlspace option—ducts suspended from the floor joists—best matches how flexible ducts are typically installed.