The new testo 440iaq and what it can do
The Testo 440IAQ is a revolutionary full featured air testing kit for professionals who need accuracy and reliability in a…
(podcast) using volts and ohms in diagnosis
We look at voltage and resistance, specifically using a voltmeter and an ohmmeter for diagnosis as well as a discussion…
(podcast) what it takes to be an excellent residential service tech
In this episode we cover the skills and traits needed to be the best residential service tech you can be.…
Electrical circuit basics part 1 – line & load
Some electrical circuit basics for organizing and understanding electrical circuits. This video will help lay the foundation for understanding diagrams…
Ductless cleaning and maintenance start to finish
This video demonstrates cleaning and testing a ductless system including pulling the blower wheel and washing the evaporator with the…
(podcast) compression ratio, heat pumps and more w/ carter stanfield
Carter tells us why compression ratio is important, what it means and why it changes so much on heat pump…
How to evacuate an air conditioning system (fast and deep vacuum)
Evacuation Start to finish with some of the best evacuation practices. Read all the tech tips, take the quizzes and…
Replacing a piston with a txv using the danfoss tr6 kit
We show step by step how to install a TXV in place of a piston on a Carrier system using…
Leak free systems w/ bill johnson
Bill Johnson is one of the great educators and writers of our time in HVAC/R and he shares about his…
When dew and bubble isn’t enough – refrigerant glide mid point / average saturation temperature
High glide refrigerants (Zeotropic) cannot be charged and diagnosed like typical R22 or R410 (Near Azeotropic). In addition to De…