HVAC professionals across the country are experiencing a recent change that is driven by energy codes. This change is related to duct-leakage testing on new and often retrofitted HVAC systems. A lot ...

The International Code Council (ICC) has passed a proposal that will require more duct testing in an effort to combat duct leakage, conserve energy, and reduce utility bills. While the desired end ...

Building-science data highlight duct leakage as a widespread, overlooked issue undermining energy savings in 95% of San ...

If you trace this duct down, you'll find that it connects to an opening at the exterior of the building. This is essentially just a hole in the side of the building that brings in fresh outdoor air.