You are inspecting the ductwork in an existing home and notice that the supply ducts are located in the living room ceiling. According to the 2024 International Residential Code, what is the minimum height requirement for supply ducts in the ceiling space?
- A6 feet.
- B7 feet.
- 8 feet.
- D9 feet.
Exam tip
Ensure that ductwork is installed at the correct height to avoid interference with ceiling fixtures.
Why C is correct
Section M1503.1 of the 2024 IRC requires that supply ducts in the ceiling space must be at least 8 feet above the finished floor.