The pressure in a duct system is measured in ____.

Question

Quizplus · Accepted Answer

The pressure in a duct system is commonly measured in inches of water column (in. WC). This is because the pressure is relatively low in duct systems and is often measured with a manometer, which measures the difference in pressure between two points in inches of water column. The other options, psig (pounds per square inch gauge), psia (pounds per square inch absolute), and in. Hg (inches of mercury) are not typically used to measure pressure in duct systems.

The Pressure in a Duct System Is Measured in ____