The danger of using ground as a reference
This short video covers a common mistake techs make when they check voltage to ground. Read all the tech tips,…
Electrical circuit basics part 3 – resistance and loads
In part three we cover voltage measurement, loads and resistance in electrical circuits. Read all the tech tips, take the…
Short 2 – delta t
Delta T (Evaporator air temperature split) what it is, what t means and how to avoid some common pitfalls Read…
Short 1 – refrigerant circuit basics
In this short episode we review the basics of the refrigerant circuit. Compressor, Condenser, Metering Device and Evaporator Read all…
Special episode – how to get a raise, promotion or bonus
As we ring in the new year this episode focuses on how people in the HVAC/R trade can make more…
Beating the ego, ignorance and insecurity monster w/ andrew greaves
In this simultaneously heavy and lighthearted discussion, Bryan Orr and Andrew Greaves discuss ego, Dunning Kreuger, insecurity and apprenticeship in…
Setting up the testo 510 manometer
How to setup the Testo 510 out of the box to use it for checking static pressure and gas pressure…
Podcast – reach in refrigeration w/ eric mele
A summary of reach in coolers (refrigerators), freezers and wine coolers with some mindset and technical tips Read all the…
Electrical circuit basics part 2 – intro to ladder diagrams
Bryan covers more electrical basics, 240v circuits, 120v and 24v with the differences between L1, L2, Neutral, Common and Ground…
(podcast) defrost in commercial refrigeration w/ dick wirz
Author of commercial refrigeration for air conditioning technicians, Dick Wirz talks to us about refrigerator and freezer defrost strategies. Read…