DISCLAIMER: I have no financial interest in HVAC Simulator or Dirk’s company, Nauman Innovation Group LLC. He is not a sponsor; I just think he’s a great guy who cares a lot about the industry, and I’m excited to share his work with other people who want to improve training and education in the skilled […]

The first law of thermodynamics is an extension of the law of energy conservation. The latter states that energy can be neither created nor destroyed but converts from one form to another. Thermodynamics is the study of heat’s relationship with mechanical work, and it establishes heat as a form of energy that can be neither […]

When I started in the trade in 1999, there were still many oilable blower motors in service. As part of the maintenance, we would remove the housing and oil the motor. We would also vacuum the motor and wipe it down. As oilable motors have become extinct, I see fewer and fewer techs pulling the […]