When I teach electrical basics, we do this exercise where we sit down and connect a 10-watt bulb to a power supply and through a switch. It's a SUPER SIMPLE circuit—the kind you might have learned about in a high school science class. But then I grab another 10-watt bulb and tell them to connect […]

This is a basic overview of the refrigeration circuit and how it works. It isn't a COMPLETE description by any means, but it is designed to assist a new technician or HVAC/R apprentice in understanding the fundamentals. First, let's address some areas of possible confusion:  The word “condenser” can mean two different things. Many in […]

  We’ve already made a few tech tips and uploaded a few podcasts about HVAC business practices, including some on profitability. That content is all fine and dandy, but those podcasts, articles, and videos may seem out of touch with most of our audience. After all, that content hardly seems to apply to the bread […]