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We talk about Specific gravity, relative density and why it matters to a tech

In this episode we speak with Embraco about R290 (Propane) refrigerant, Hydrocarbons and what you need to know about them. Links: http://refrigerationclub.com/ http://naturalrefrigerants.info/ http://embraco.com/Default.aspx?tabid=40  

We talk through measuring amperage on a blower and condensing fan motor and why you may be measuring innaccurately resulting in a misdiagnosis

In this service manual talk through episode we discuss the Heatcraft Beacon 2 refrigeration system and what it entails

This episode covers the why and the how of low ambient cooling and refrigeration

I talk to John Oaks about his experience as a VRF tech in the field including branch boxes and two pipe vs. three pipe technology

This is a voice over audio presentation of the article of the same title on the HVACRschool.com website

Jason Obrzut come on and talks us through his furnace sequence of operation training  Take It Slow, It's Gonna Blow

We talk through stack effect. What it is and what issues it causes.