Duct leakage testing helps to make sure that ducts are properly sealed to create an energy efficient, comfortable, and healthy indoor environment. Duct leakage testing is a requirement of the 2018 IECC for new construction residential buildings with any ductwork located outside conditioned space. For renovations or additions to existing buildings, duct testing is not required (see Illinois amendments), but duct work must be sealed (R403.3.2).
Read this energy code smart tip to learn about how to conduct a duct leakage test, and why duct leakage testing is so important.
Check out our online Duct Testing Module for a more in-depth look at duct testing and receive continuing education credit.