48:49

Electrical Basics Made Easy

48:04

Psychrometrics Made Simple

48:25

Fan Fundamentals - From The Wright Brothers To Today

44:24

Refrigeration in The Real World

15:33

How to Troubleshoot Fan Performance Issues

48:29

Fan Curves - A Deep Dive

6:54

Overcurrent, Overload, Short Circuit, and Ground Fault

27:35

How to Evacuate an AC system, Full Vacuum Procedure