Oct 28, 2016
In this episode of HVAC School, Bryan covers the "5 pillars of refrigerant circuit diagnosis" and why they matter. They are:
- Superheat
- Subcool
- Suction pressure
- Head pressure
- Air temp split (delta T)
These 5 readings give you a holistic idea of the A/C system. Instead of getting hooked on checking only superheat and...
Oct 12, 2016
In this episode of HVAC School, Bryan talks to his sons about basic electrical theory.
Electrical theory normally requires trigonometry, calculus, and all of those fun maths. However, the basics are so easy that a 12 and 14-year old can figure it out. Electrical theory follows many of the same principles as...
Oct 10, 2016
This episode of HVAC School is a Kalos meeting where Bryan talks to his team about an incident where a leak was erroneously detected on the evaporator coil.
The system was three months old, and one of our junior techs diagnosed a leak on the evaporator coil. (What?? That never happens!) So, the customer was quoted for a...
Oct 5, 2016
In this episode of HVAC School, we discuss the entire basic refrigerant/compression refrigeration circuit.
We are in the business of moving heat. Heat refers to motion in the molecules. Temperature is the average velocity of those molecules. Heat needs a temperature differential to move. So, HVAC systems absorb heat...