Editor’s note: The Basics department this month is an excerpt from the ISA book Flow of Industrial Fluids – Theory and Equations by Raymond Mulley. Some material in this section may seem self-evident ...

Technicians new to static pressure measurement often wrestle with frustration and doubt as they learn this new skill. Two of the most common issues are uncertainty about pressure measurement results ...

Last year, I wrote about five popular ways HVAC professionals across the country correct airflow issues. These corrections are commonly referred to as air upgrades and are basic duct repairs that ...