Fan laws and fan curves are a deep subject with a lot of nuance and variation. Just to get our heads around the subject, let's focus on two different types of fans that we see all the time in HVAC: the prop/axial type and the radial/centrifugal type. Centrifugal/Radial As we increase the pressure differential across […]

As a technician gains skill, they will learn that regularly testing your tools is a huge part of success. It isn't long in the field before techs find out that just because a meter or gauge gives a particular reading, it doesn't ALWAYS mean it is correct. Vacuum is one of these areas. Everything in […]

You may have heard of a Western movie called True Grit. I won’t spoil it for you, but John Wayne joins Kim Darby to hunt down the man who killed Darby’s father and left with the family’s savings. (Wait, you’re telling me there’s a version with Jeff Bridges, Hailee Steinfeld, and Matt Damon? I thought […]