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PODCAST

HVAC School - For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

business careers

All Episodes

01:19:21

What are User Requirements? w/ ELK

HVAC School - For Techs, By Techs ·

2025/09/25

In this comprehensive session, Eric Kaiser walks through the critical importance of establishing proper user requirements before making equipment purchases. Drawing from real-world experiences in the HVAC industry, he demonstrates how poor upfront planning leads to costly mistakes, buyer's remorse, and multiple equipment purchases. The discussion covers everything from selecting simple tools like screwdrivers to complex HVAC system installations for residential and commercial applications. Eric

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10:02

Static Pressure is like Blood Pressure - Short #258

HVAC School - For Techs, By Techs ·

2025/09/23

In this short podcast episode, Bryan explains the science behind a common HVAC simile: static pressure is like blood pressure. He covers the similarities and differences between measuring static pressure during a service call or maintenance and a doctor measuring your blood pressure at a checkup. Total external static pressure (TESP) should be measured every time you perform service or maintenance on a unit. The exact test port location will vary between air handlers and furnaces; the coil adds

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01:10:15

How To Be a REAL Comfort Consultant

HVAC School - For Techs, By Techs ·

2025/09/18

In this comprehensive episode, Bryan Orr sits down with Tim De Stasio to explore the world of comfort consulting and performance contracting in HVAC. Tim, who sold his contracting company to focus on this specialized field, shares his methodical approach to diagnosing home performance issues that go far beyond traditional HVAC troubleshooting. Working primarily in the humid coastal North Carolina market, Tim has developed a thorough process that treats the house as a complete system rather than just

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10:13

Non-bleed TXVs and Hard Starts - Short #257

HVAC School - For Techs, By Techs ·

2025/09/16

In this short podcast episode, Bryan talks about non-bleed TXVs and whether they need hard starts. A non-bleed (hard shutoff) TXV is a metering device that shuts off during the off cycle; it closes shut when there is no superheat. This strategy prevents refrigerant migration, especially in cases where we have long line sets. Liquid refrigerant stays in the condenser and is kept out of the evaporator, suction line, and compressor crankcase. When we have a non-bleed TXV, the compressor may have a hard

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40:28

Scroll Compressors & New Refrigerants w/ Copeland

HVAC School - For Techs, By Techs ·

2025/09/11

In this essential episode, Bryan sits down with Jeff and Tom from Copeland to dive deep into the world of scroll compressors and the critical topic of refrigerant compatibility. As the HVAC industry navigates new refrigerant standards and regulations, understanding how compressors are specifically designed and optimized for different refrigerants has never been more important. The conversation begins with a comprehensive overview of refrigerant classifications, focusing on the A1, A2L, and A3

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10:21

Leaky Ducts = Sweaty Houses - Short #256

HVAC School - For Techs, By Techs ·

2025/09/09

In this short podcast episode, Bryan explains how leaky ducts can lead to sweaty, uncomfortable houses. Moisture issues are common all across humid and "green-grass" climates in the United States. Hot, unconditioned attics and crawl spaces also often have high dew points, which can cause moisture problems in those spaces. Plants also release moisture, so agricultural communities also have those special considerations. There are several HVAC and building design factors that can prevent or worsen

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41:44

Is Starting an HVAC Business Smart?

HVAC School - For Techs, By Techs ·

2025/09/04

In this insightful episode of the HVAC School podcast, Bryan Orr sits down with successful small business owner Matt Bruner to discuss how to build and maintain a thriving HVAC business without the typical stress and overwhelming challenges that many entrepreneurs face. Matt, who has been running his own HVAC company for about two and a half years, shares his refreshingly honest perspective on small business ownership and debunks many of the common myths about entrepreneurial stress. Matt's

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15:05

The Downside to Intentionality - Short #255

HVAC School - For Techs, By Techs ·

2025/09/02

In this business and building-oriented short podcast episode, Bryan discusses the limitations and downsides of intentionality. He also talks about the differences between people who act, think, and work quickly and those who are a bit slower, more detailed, and more methodical; there are upsides and downsides to both. People often talk about being intentional, but those intentions have little impact on the world unless they lead to action. Intentionality feels productive, but it doesn't make a

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50:43

What to Do in a Nuke Disaster - W/ Bill Nowicki

HVAC School - For Techs, By Techs ·

2025/08/28

In this fascinating episode, Bryan welcomes back longtime friend and nuclear industry veteran Bill Nowicki to discuss a recently released document from DHS and NUSTL that provides new recommendations for HVAC operations during nuclear events. Bill brings over 40 years of nuclear experience, starting as a 19-year-old Navy nuclear operator (after being deemed "not ready for the grill" at Friendly's restaurant) and progressing through various roles, including lead engineer on critical control systems

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17:24

Making Stuff Real - Short #254

HVAC School - For Techs, By Techs ·

2025/08/26

In this short podcast episode about a bigger-picture topic, Bryan talks about making stuff real. He talks about how to make ideas, businesses, podcasts, and other large projects come to life based on his experiences with HVAC School, Kalos, and several other current and past projects. Understanding yourself and the thing you want to do is the first key to making things real. You need to be able to speak intelligently about a topic (without sounding pretentious); mastery isn't always the goal, but

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42:41

Is HVAC School Worth It?

HVAC School - For Techs, By Techs ·

2025/08/21

In this comprehensive discussion, Bryan sits down with Brad Cooper, an experienced HVAC instructor from Arkansas, and JD Kelly, a trade school graduate, to tackle one of the most pressing questions in the HVAC industry: Is trade school worth it? Rather than offering a simple yes or no answer, the trio dives deep into the nuanced factors that determine whether trade school provides real value for aspiring HVAC technicians. The conversation begins with Brad's unique perspective as both a field

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11:50

Split-Phase vs. 3-Phase - Short #253

HVAC School - For Techs, By Techs ·

2025/08/19

In this short podcast episode, Bryan breaks down the differences between split-phase and 3-phase power in HVAC systems. Split-phase is a form of single-phase power, and it's common in residential HVAC. Three-phase power is more common in commercial and industrial applications. Single-phase power uses only one of the three phases of power produced by the power company. When there is a neutral and two sides of 120V power, that is split-phase power. Transformers on power poles for residential service

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55:19

IAQ for the HVAC Technician w/ Brynn Cooksey

HVAC School - For Techs, By Techs ·

2025/08/14

In this episode from the 6th Annual HVACR Training Symposium, Brynn Cooksey, a home performance contractor from Michigan and technical training business owner, reveals how indoor air quality (IAQ) testing transformed his contracting business from a commodity service into a profitable specialty. Cooksey shares his proven methodology for turning IAQ into an "instant profit center" by implementing systematic testing on every service call. Cooksey opens with a striking reality check: according to the

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12:00

Bi-metal & Magnetic Switches - Short #252

HVAC School - For Techs, By Techs ·

2025/08/12

In this short podcast episode, Bryan covers some basics on bi-metal and magnetic switches. Bi-metal switches are made of two dissimilar metals that are bonded together and are often integrated into motors. When the temperature changes, the metals bend. In an overload circuit, they're designed to bend and open the circuit in an overheat condition. Mercury thermostats also use these; they have a bulb attached to a bi-metallic coil, which causes it to wind or unwind when heated or cooled. Fan limit

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44:42

Fan Law 2 for Techs w/ Adam Mufich

HVAC School - For Techs, By Techs ·

2025/08/07

In this educational session, Adam from National Comfort Institute (NCI) delivers a comprehensive deep dive into Fan Law 2 and its practical applications for residential HVAC systems at the 6th Annual HVACR Training Symposium. Adam begins by establishing the fundamental concepts of CFM (cubic feet per minute) and static pressure, explaining how these measurements relate to system performance. He shares a humbling personal story about learning to measure gas pressure from a homeowner, emphasizing

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17:15

Understanding Voltage Drop - Short #251

HVAC School - For Techs, By Techs ·

2025/08/05

In this short podcast episode, Bryan drops some knowledge to help with understanding voltage drop, a few different causes of it, and NEC recommendations. Voltage is electrical potential or "pressure," and voltage drop is the reduction in electrical potential energy. We often think of it happening across conductors (which add resistance), but it also happens across loads (like contactor coils). Voltage drop across loads is usually designed, but voltage drop across conductors is usually undesigned and

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51:07

Understanding Airflow: David Bowie, a Used Car Lot,...

HVAC School - For Techs, By Techs ·

2025/07/31

In this enlightening presentation, Alex Meaney breaks down the fundamental concepts of airflow in HVAC systems using practical analogies and real-world examples. Rather than diving straight into complex mathematics, Alex focuses on helping technicians and contractors understand what's actually happening inside ductwork and why traditional design methods may be falling short in modern residential systems. Alex begins by addressing one of the most critical yet misunderstood aspects of ductwork: the

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49:21

Returns - Passive? Active? Sizing? w/ Adam & Matt

HVAC School - For Techs, By Techs ·

2025/07/24

In this episode of the HVAC School podcast, Bryan Orr sits down with Adam and Matt to tackle one of the most misunderstood aspects of HVAC system design: return air systems. The conversation dives deep into the common myths surrounding returns, particularly the widespread belief that adding returns to rooms will automatically improve comfort and air mixing. The hosts explore why returns are often seen as mysterious - sometimes helping when added to a room, sometimes making things worse - and work

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08:27

Fan of Fans - Short #250

HVAC School - For Techs, By Techs ·

2025/07/22

If you're a fan of fans, this is the podcast for you! In this short podcast episode, Bryan shares how installing ceiling fans can be a smart HVAC design strategy (even though he wasn't a fan of fans!). Ceiling fans break the "don't blow air on people" rule we usually refer to in duct design, but they can solve quite a few basic comfort problems, especially in homes with lower loads than we've historically seen. They're great for creating high-velocity airstreams and mixing air. Low-load homes have

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53:51

Keys to VRF Maintenance w/ Roman

HVAC School - For Techs, By Techs ·

2025/07/17

In this episode of the HVAC School podcast, Bryan Orr sits down with Roman Baugh, a leading VRF (Variable Refrigerant Flow) specialist and co-host of the VRF Tech Talk podcast, for an in-depth exploration of VRF system maintenance. The conversation begins with some lighthearted back-and-forth before shifting to the technical realities of maintaining VRF equipment. Roman immediately addresses a common misconception: the idea that VRF systems are “maintenance free.” He explains that, contrary to some

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