Bryan Orr
Company name: HVAC School
Position: Founder
Bryan is the founder of HVAC School. Established in 2016, HVAC School produces free educational podcasts, videos, and tech tips for HVAC and refrigeration professionals.
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Events attending:

Tech Tips written:

When Ducts Get Too Big
By:Bryan OrrThis tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich, as well as special guests Russ King, Steve Rogers, and Tony Amadio. You can watch that live stream on our YouTube channel HERE. It was a beautiful day outside. The sun was shining, the birds […]
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Capacitor Testing and Replacement Procedure
By:Bryan Orr ❶ Understand What a Run Capacitor Does The run capacitor provides continuous phase-shifted current to the motor start winding, allowing the motor to run: With the design efficiency In the right direction With the appropriate torque With near “unity” power factor (power factor near 1.0) If the run capacitor is failed, the motor […]
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Why Compression Ratio Matters
By:Bryan Orr In HVAC/R, we are in the business of moving BTUs of heat, and we move BTUs via pounds of refrigerant. The more pounds we move, the more BTUs we move. In a single-stage HVAC/R compressor, the compression chamber maintains the same volume no matter the compression ratio. The thing that changes is the […]
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Event speaker:

Humility in Thought Leadership
By:Bryan Orr NOTE: If you cannot view the recording, the video may still be processing. The maximum wait time is 24 hours. We apologize for the delay and appreciate your patience.
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Symposium Day 1 Introduction
By:Jim BergmannBryan Orr
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Business Round Table
By:Bryan OrrAndy HoltTersh BlissettLuke Peterson   
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Video guest:

Expansion Valves – What Does and Doesn’t Matter?
By:Bryan OrrMatthew BrunerAdam MufichJoe ShearerCorey CruzMatthew Taylor
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Q&A with Jim B and Bryan Orr
By:Jim BergmannBryan OrrJoe MedoschBen Reed
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Podcast guest:

When to Switch to Emergency Heat? – Short #190
By:Bryan Orr  In this short podcast episode, Bryan talks about when to switch to emergency heat. He talks about coefficient of performance (COP) and how it's a deciding factor when to run emergency heat, which is when a system ONLY runs the backup heat; it doesn't use it as supplementary heat. When we have […]
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Combustion Venting Categories – Short #189
By:Bryan Orr  In this short podcast episode, Bryan talks about the four different combustion venting categories for gas appliances as set by ASHRAE and where you'll see them. He also shares some notes about pressurization. These categories deal with the pressurization and temperature ranges of the vents. Category 1 venting is used for old-school […]
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Focus of Your Goals with Refrigeration Mentor
By:Trevor MatthewsBryan Orr  In this episode of the HVAC School Podcast, Bryan Orr and Trevor Matthews delve into the importance of setting goals, focusing on them, and taking actionable steps to achieve them. They emphasize that goal-setting is crucial for personal and professional growth and that it requires introspection, prioritization, and sacrifice. Trevor shares […]
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Posts Commented

The Strange Behavior of Moisture in Stuff
By:Bryan Orr Water is weird and water vapor is even weirder – before we dive down this rabbit hole lets define some terms To better understand the behavior of moisture in materials, we need to first define some essential terms and concepts: Relative Humidity (RH): The ratio of the amount of water vapor in the […]
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8 Tips for New Techs (So You Don’t Get Fired)
By:Bryan Orr If you are new to the trade, I'd like to welcome you. Like many skilled trades, the HVAC/R trade has many opportunities and can help you make a good living. If you are young and new to the trade, we need you. We are grateful to have you. However, if you aren't thoughtful, […]
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