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HVAC School - For Techs, By Techs

Jun 29, 2023

Brett Wetzel joins the podcast to talk about his journey from resi tech to industry-leading refrigeration trainer.

Brett is best known for his educational content, but he is also the manager of technical troubleshooting and training at CoolSys. The skills gap is widening, and CoolSys was inspired to create a solution to...


Jun 27, 2023

In this short podcast episode, Bryan gets into some oil talk, covering some common refrigerant oil terms and types.

Esterification is the process by which organic acid and alcohol come together to form polyolester (POE) oil and water. Hydrolysis refers to the decomposition of a substance when it comes into contact with...


Jun 20, 2023

In this short podcast episode, Bryan talks about using a megohmmeter on a scroll compressor (or "megging" a scroll).

Scroll compressors are among the most common compressor types nowadays, and they come with their unique needs and best practices. You can't pump them down into vacuums (in many cases, you can't do that...


Jun 15, 2023

Matt Bruner joins the podcast to talk about what it's really like being an HVAC creative. Matt is a young HVAC business owner who has recently written several HVAC School tech tips and pursued creative interests in the trade.

Being creative in any industry or aspect of life requires us to be aware of what's around us...


Jun 13, 2023

In this short podcast episode, Bryan talks about TXVs and their impacts on energy efficiency ratings (EER and SEER).

EER (Energy Efficiency Ratio) is calculated based on fixed conditions (an outdoor temperature of 95 degrees Fahrenheit and an inside temperature of 80 degrees with 50% RH). EER is a ratio of cooling-only...