Get Tech Tips
Subscribe to free tech tips.
Bonus – Blue Collar Life & Experience w/ Ralph Wolf
In this episode Bryan talks to Ralph Wolf from T&N Services on Youtube and the Working Joe's podcast. We talk about how the trade has changed for us and what experience gives a tech that can't be read in a book. You can enter the giveaway at hvacrschool.com/summer17
Related Tech Tips

Airflow, airflow, airflow… When we set up and commission comfort cooling and heating systems, we need to pay more attention to airflow before worrying about the fancy controls or the refrigerant circuit. So, as a thought exercise, let's consider a typical 2-ton, straight cool, TXV residential system and think through what happens when we alter […]
Read more
Let's first state the obvious. Most techs are intimidated by psychrometric charts and Mollier diagrams. We JUST ARE. While there are some pretty complicated formulas that back up these diagrams, using them isn't that big of a deal once you understand the different elements and then focus on one at a time. BUT WHY DO YOU […]
Read more
We’ll never run out of content to discuss as long as thermostatic expansion valves exist. Deal with it. Today, we’re going to focus on the powerheads of TXVs. This article will focus on what the powerheads do, how they work, and some basic troubleshooting procedures involving TXV powerheads. What is a powerhead, and where […]
Read more