Shows
HVAC School - For Techs, By TechsElectric Heat Talk w/ Bert In this informative episode, host Bryan welcomes guest Bert for an in-depth discussion on the often-overlooked but critically important topic of electric heat in HVAC systems. The conversation takes listeners through both the common and uncommon issues that arise with electric heat installations, offering practical insights drawn from years of field experience. Bryan and Bert balance technical expertise with relatable storytelling, making complex electrical concepts accessible to both HVAC professionals and homeowners interested in understanding their heating systems. The discussion begins with some of the more dramatic (and rare) scenarios, including tales of objects left on heat...
2026-02-0530 minHVAC School - For Techs, By TechsGas & Combustion Safety w/ Bert In this informative episode, Bryan and Bert dive deep into gas appliance safety and combustion analysis from the unique perspective of Florida HVAC technicians. While they humorously acknowledge that Florida's mild winters mean they don't work on gas furnaces daily, they make a compelling case that this actually makes their training even more critical. When technicians only encounter gas appliances occasionally, the stakes are higher—which is why they've developed rigorous protocols to ensure safety every single time. The conversation covers everything from the basics of gas leak detection to the nuances of carbon monoxide monitoring, combustion ai...
2026-01-2944 minHVAC School - For Techs, By TechsHVAC In the Northeast w/ Leo & Paul Sharkey In this engaging episode of the HVAC School podcast, host Bryan Orr sits down with Leo and Paul Sharkey, a father-son duo of mechanical engineers who made the leap into the HVAC business. Leo and Paul share their remarkable journey of purchasing an HVAC company in September 2020 and quadrupling its revenue within five years. Their engineering backgrounds bring a refreshing, data-driven perspective to an industry that often relies on rules of thumb and outdated practices. The Sharkeys operate in the challenging Northeast market, where homes can date back to the 1600s and 1700s. They discuss the eye-opening...
2026-01-1537 minHVAC School - For Techs, By TechsWhat We Learned From NCI Duct / Balancing Training In this engaging and informative episode, Bryan sits down with Elliot to discuss his recent training experience with the National Comfort Institute (NCI), covering two intensive courses on duct system optimization and residential air balancing. The conversation offers valuable insights for HVAC professionals looking to improve their technical skills and provide better service to their customers. With a mix of technical expertise and practical field experience, this episode breaks down complex HVAC concepts into actionable strategies for contractors and technicians. Elliot shares his key takeaways from the NCI training, emphasizing how the courses filled critical knowledge gaps...
2026-01-0836 minHVAC School - For Techs, By TechsSizing Breakers and Conductors (for HVAC) – Have Things Changed? In this essential episode, Bryan Orr sits down with Elliot, the residential install supervisor at Kalos Services, to unpack a critical issue that's causing confusion among HVAC technicians, electricians, and inspectors alike: the new standards for breaker and conductor sizing on inverter-driven equipment. The conversation was sparked by Elliot's frustrating experience of having two inspectors in the same county fail the same installation for opposite reasons—one for an oversized breaker and another for an undersized breaker. This contradiction led to a deep dive into recent changes in UL standards and how they affect everyday HVAC installations. Th...
2026-01-0135 minHVAC School - For Techs, By TechsAre Two Are Better Than One: Understanding Tandem Compressors In this comprehensive episode of the HVAC School podcast, host Bryan Orr sits down with three experts from Copeland to demystify tandem and trio compressor systems. Joining him are Gina Kahle (Multiples Engineering Manager with 12+ years at Copeland), Tyler Daniels (Product Management team member), and James Stevenson (Technical Sales veteran with 28 years of field experience). Together, they provide both the engineering perspective and real-world service insights that technicians need to understand these increasingly common systems. The conversation begins with the fundamentals: tandem and trio systems represent an evolution in compression modulation, allowing multiple compressors to work together...
2025-12-0449 minHVAC School - For Techs, By TechsAn R-454B Ramble w/ ElliotIn this raw and unfiltered episode, Bryan sits down with Elliot, a senior service tech and newly minted install supervisor, to discuss the realities of working with R-454B refrigerant in the field. What starts as a technical discussion about the new A2L refrigerant quickly evolves into a candid conversation about industry frustrations, manufacturer accountability, and the practical challenges technicians face with the latest refrigerant transition. With four years of hands-on experience, Elliot brings fresh perspectives on everything from charging procedures to equipment reliability issues. The conversation takes an honest look at the R-454B rollout...
2025-11-1339 minHVAC School - For Techs, By TechsGroup Training - What We Have LearnedIn this episode of the HVAC School podcast, Bryan Orr sits down with Bert and Leanna to discuss Kalos's first official cohort apprenticeship program, dubbed the "Launch Program." What started as Bryan's persistent idea—one that the team initially resisted as too expensive and logistically challenging—evolved into a transformative three-month training experience that brought 15 green apprentices through intensive classroom, lab, and field work across HVAC, electrical, and building automation systems. Bert, who graded himself a B for his first attempt at leading the program, shares candid insights about the challenges of planning and execution. While he meti...
2025-10-231h 03HVAC School - For Techs, By TechsJust Do it! w/ Chad SimpsonIn this candid conversation recorded live at the NCI Summit in Austin, Bryan Orr sits down with Chad Simpson, owner of Simpson Solutions, for an unexpectedly revealing discussion about the reality of building a successful HVAC business. What makes this episode particularly compelling is Simpson's refreshing honesty about his struggles, failures, and the gradual transformation from a struggling contractor making $8 an hour to running a $28.5 million operation with healthy profit margins. Simpson's journey began unusually early—he wrote a paper in his freshman year of high school (1996) declaring his intention to own an HVAC company. After graduating fr...
2025-10-1655 minHVAC School - For Techs, By TechsHow To Be a REAL Comfort ConsultantIn 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 focusing on equipment. Tim's journey into comfort consulting began when he recognized the value of comprehensive home performance testing...
2025-09-181h 10HVAC School - For Techs, By TechsIs Starting an HVAC Business Smart?_*]:min-w-0 !gap-3.5"> 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 journey from technician to business owner offers a compelling alternative to the traditional "grow fast or fail"...
2025-09-0441 minHVAC School - For Techs, By TechsWhat to Do in a Nuke Disaster - W/ Bill Nowicki_*]:min-w-0 !gap-3.5"> 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 at nuclear facilities. Bill shares his journey from nuclear plant evaluator to leadership trainer, now working internationally to help nuclear professionals develop their skills. His...
2025-08-2850 minHVAC School - For Techs, By TechsReturns - Passive? Active? Sizing? w/ Adam & Matt_*]:min-w-0 !gap-3.5"> 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 to clarify the actual science behind how returns function versus how many technicians think they...
2025-07-2449 minHVAC School - For Techs, By TechsKeys to VRF Maintenance w/ RomanIn 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 marketing claims, these systems require regular, specialized attention to ensure longevity and reliable performance. Roman shares real-world stories that highlight the consequences...
2025-07-1753 minHVAC School - For Techs, By TechsWhat's up with Refrigerant & System Regulations w/ Copeland_*]:min-w-0 !gap-3.5"> In this insightful episode of the HVAC School podcast, host Bryan sits down with Jennifer Butsch, Director of Regulatory Affairs at Copeland, to discuss the rapidly evolving regulatory environment affecting the HVAC industry. With eight years of experience at Copeland and a background spanning codes, standards, and regulatory affairs, Jennifer provides a unique perspective on the challenges and opportunities facing contractors, technicians, and manufacturers in today's market. The conversation begins with an in-depth look at the EPA's Technology Transition Rule and the recent shift from R-410A to mildly flammable refrigerants like R-454B and...
2025-06-1833 minHVAC School - For Techs, By TechsLearning and Teaching GRIT w/ Ty BranamanIn this episode of the HVAC School podcast, host Bryan Orr and guest Ty Branaman have an in-depth, hands-on conversation about the philosophy, structure, and impact of GRIT Camps—workshops designed to introduce kids to the trades through immersive, practical experiences. The episode opens with reflections on a recent successful GRIT Camp in New Jersey, where both mentors and children gained new skills and confidence. Ty shares the excitement of seeing young participants, many of whom had never shown interest in school before, become deeply engaged in building, problem-solving, and learning from trades professionals. Parents noticed a newfound enthusiasm in...
2025-06-121h 02HVAC School - For Techs, By TechsBand-Aids, Hacks, and Ethics - Short #244In this short podcast episode, Bryan talks about band-aids, hacks, and ethics. He explores ethical "band-aid" solutions and how to charge for them. He also covers the difference between patching up equipment ethically and unethical repairs. Temporary fixes and ugly permanent fixes fall into the ethical gray area for a lot of people, especially if technicians or HVAC business managers don't know where to draw the line between replacing a part completely and patching up issues. Patching condenser coils is an example of repair work that can be ethical. Some protocols say that the copper needs to...
2025-06-1010 minHVAC School - For Techs, By TechsWhy VRF Compressors Die w/ RomanIn this episode, Bryan and Roman dive deep into the world of Variable Refrigerant Flow (VRF) systems, focusing on the persistent issue of compressor failures. VRF technology has evolved, and it has seen a major rise in the North American market since the early 2010s. Roman shares his passion for VRF, tracing its origins back to 1982 and explaining how it earned the nickname "chiller killer" by replacing traditional chiller systems in large facilities like hotels, churches, and schools. However, with this rapid adoption came a troubling reputation: VRF systems became notorious for frequent compressor failures, prompting some institutions to...
2025-06-0556 minHVAC School - For Techs, By TechsLocked Compressor Mistakes w/ BertIn this informative HVAC podcast episode, Bryan and Bert dive deep into the complex world of locked and internal overload compressors, focusing specifically on single-phase residential units. The discussion begins with Bert explaining one of the most common challenges technicians face: diagnosing a locked compressor. He describes how compressors that are locked will typically run for only a second before overheating and stopping, creating a cycle that can be difficult to detect if technicians aren't carefully monitoring at the right moment. The hosts share personal experiences and practical diagnostic techniques, with Bert recounting how he once simulated...
2025-05-2932 minHVAC School - For Techs, By TechsCompressor Ohm Mistakes w/ BertIn this episode, Bryan and Bert dive into the often misunderstood world of compressor testing, focusing on common mistakes technicians make when using ohmmeters, compressor testers, and megohm meters. The conversation highlights how diagnostic errors can lead to unnecessarily condemned compressors and wasted time and resources. The hosts begin by discussing fundamental concepts like the difference between "open" and "short" conditions, emphasizing that a path doesn't necessarily indicate a short circuit—it simply means there's a low-resistance path. They explore how many technicians get confused when testing terminals, mistakenly thinking that normal winding-to-winding measurements indicate a problem. Th...
2025-05-2235 minHVAC School - For Techs, By TechsSuperheat Talk w/ JD KellyIn this episode of the HVAC School podcast, host Bryan discusses superheat with guest JD, who recently co-authored an article on the topic with Ty Branaman. The conversation explores the often misunderstood concept of superheat, its importance in HVAC diagnostics, and common misconceptions technicians have when measuring and interpreting it. Bryan begins by sharing how superheat was initially taught to technicians in the late 1990s and early 2000s, primarily as a method for charging fixed metering device systems. He explains how this limited view led to problems, as technicians would often add or remove refrigerant based solely...
2025-05-1528 minHVAC School - For Techs, By TechsDelta T Talk w/ JD KellyBryan from HVAC School interviews JD Kelly, known as "student of HVAC" on Instagram, about Delta T measurements in HVAC systems. This episode dives into the fundamentals of Delta T, common misconceptions, and proper measurement techniques. JD explains that Delta T is simply a temperature difference between two points of the same medium, which is often misunderstood in the industry. Many technicians are taught to measure between return grills and supply registers, but this approach can lead to inaccurate readings due to external factors like duct leakage or heat gain from attics. The proper measurement should be...
2025-05-0834 minHVAC School - For Techs, By TechsEstimating Tips and SoftwareIn this episode of the HVAC School Podcast, host Bryan sits down with Phil, the executive electrical team leader at Kalos who has transitioned into the world of estimating. Phil shares his extensive background in electrical work dating back to 1994, from his high school electrical elective to running his own business for eight years before joining Kalos and eventually establishing their estimation department. The conversation delves deep into the fundamentals of estimating in the trades, contrasting traditional qualitative approaches with more rigorous quantitative methods. Phil emphasizes that good estimating is about "finding the truth" - understanding the...
2025-04-3045 minHVAC School - For Techs, By TechsGrowing your HVAC Business the Smart Way w/ CopelandIn this episode of the HVAC School podcast, Bryan and Jim discuss strategies for growing an HVAC business, focusing on the importance of maintenance contracts, consistent service, and effective branding. Drawing from Jim's 15 years of experience running a successful HVAC company in California, they explore how maintenance contracts not only provide consistent revenue but also create valuable training opportunities for technicians. The conversation emphasizes that maintenance contracts are fundamental to building company value. Jim shares that when he sold his business, the number of maintenance contracts was a key valuation metric. These contracts tie customers to your...
2025-04-2444 min
HVAC School - For Techs, By TechsERVs - What you need to know w/ Dr. BailesIn this episode of the HVAC School podcast, host Bryan sits down with building science expert Allison Bailes to dive deep into the world of Energy Recovery Ventilators (ERVs). The conversation explores the critical role of ventilation in modern homes, highlighting how ERVs have become an essential component of maintaining indoor air quality and energy efficiency. Bailes breaks down the technical nuances of ERVs, explaining how these systems not only bring fresh air into a home but do so while recovering both temperature and moisture energy. The discussion goes beyond simply explaining what an ERV is, delving...
2025-04-1740 min
HVAC School - For Techs, By Techs10 Things I've Learned In the Last 10 YearsThis podcast episode is of Bryan's session from the HVAC School Symposium, "10 Things I've Learned in the Last 10 Years." Delivered as HVAC School approaches its 10-year milestone and Kalos hits 20 years, Bryan blends technical know-how with personal stories, revealing how his "expertise" is a product of constant learning—often from the very audience he's addressing. Bryan's presentation weaves together practical HVAC lessons and relatable anecdotes, offering a glimpse into his growth as a technician, educator, and leader. He tackles wire sizing versus breaker sizing, debunking outdated myths tied to the National Electrical Code and sharing tales of sp...
2025-04-031h 23
HVAC School - For Techs, By TechsWhat is the Best Brand? - Short #233In this short podcast episode, Bryan answers a listener-submitted question: what is the best brand of equipment for residential new construction? A lot of people have their own personal preferences when it comes to brands, whether that's with equipment, tools, or even cars. However, when it comes to HVAC equipment, there are a lot of factors that come into play, especially as far as local support is concerned. Are the distributors and territory managers accessible? Reliable? Bryan's personal preferences deal a lot with American (or at least North American) manufacturing and the strength of their local support...
2025-03-2508 min
HVAC School - For Techs, By TechsHelping Small Owners Succeed w/ WorkHeroJoin Bryan Orr and Furman Haynes from WorkHero for a great discussion about how to keep HVAC local and help more small owners succeed. Live from AHR Expo 2025, we get to hear from one of the founders of an exciting new company that is offering expert office management that small HVAC business owners can afford. Bryan also talks with Furman about a survey that HVAC School and WorkHero recently conducted that received over 1,300 responses and yielded fascinating data about the day-to-day challenges of running HVAC businesses. Key topics covered: The challenges small...
2025-03-2033 min
HVAC School - For Techs, By TechsLive from AHR with Kalos Team Dre & ElliotJoin Bryan Orr as he goes Live from the AHR Expo 2025 at the Orange County Convention Center with Kalos Services team members Dre and Elliot! They share their first impressions of the massive HVAC industry expo, discuss interesting booth displays, and chat about the latest tools and technology they've spotted on the show floor. Get their perspective on what it's like to attend one of the largest HVAC/R trade shows in the world, featuring over 60,000 industry professionals from around the globe. The team discusses everything from impressive industrial equipment displays to innovative tools like Fieldpiece's new...
2025-03-1119 min
HVAC School - For Techs, By TechsA Conversation with NAVAC at AHR 2025In this engaging episode of the HVAC School Podcast, host Bryan sits down with Jesse from NAVAC to dive deep into the evolving landscape of refrigeration technology, focusing primarily on the transition to A2L refrigerants. The conversation offers a refreshingly pragmatic approach to addressing industry concerns about these new, mildly flammable refrigerants, dispelling myths and providing practical insights for HVAC technicians. The discussion begins by addressing the most pressing question for many technicians: Do you need to buy all new tools to work with A2L refrigerants? Jesse from NAVAC provides a nuanced response, emphasizing that...
2025-03-0746 min
HVAC School - For Techs, By TechsUEI at AHR: Carbon Monoxide Safety and Combustion AnalysisIn this informative podcast episode, Bryan from HVAC School is joined by Louise Keller, the National Training Manager for UEI Test Instruments, to discuss the critical importance of carbon monoxide safety and proper combustion analysis. The conversation begins with lighthearted banter about the previous night's Tactical Awards ceremony before diving into the serious topic of CO dangers and detection. Louise shares valuable insights about the dangers of carbon monoxide exposure, particularly at lower levels that might not trigger standard home CO alarms. She explains that CO poisoning can mimic many other conditions, including early-onset Alzheimer's, traumatic brain...
2025-03-0346 min
HVAC School - For Techs, By TechsCatching Up with Fieldpiece and Refrigeration Technologies at AHRIn this special episode from the 2025 AHR Expo, Bryan brings us two fascinating conversations with industry leaders who are shaping the future of HVAC technology and tools. The episode kicks off with Tony Gonzalez from Fieldpiece celebrating their 35th anniversary. Tony shares his remarkable journey from packaging meters in the warehouse to his current leadership role, providing unique insights into the company's evolution. The discussion explores Fieldpiece's pioneering role in developing HVAC-specific testing equipment, particularly highlighting their groundbreaking HS26 meter that filled a crucial gap in the industry when no other company was creating specialized meters for HVAC technicians.
2025-02-211h 10
HVAC School - For Techs, By TechsFrom Plumber to HVAC Owner w/ Manly ArnansonIn this episode, Bryan speaks with Manly, an HVAC professional from Manitoba, Canada, about his journey from working in his family's plumbing business to running his own HVAC company. Manly shares his experiences working in extreme cold weather conditions, where temperatures can drop to -30°C (-22°F), and discusses the unique challenges and emergency response strategies required in such a heating-dominated market. The conversation delves deep into the ethical aspects of running an HVAC business, with both Bryan and Manly sharing their Christian perspectives on business ethics, customer service, and professional integrity. They discuss the importance of...
2025-02-2045 min
HVAC School - For Techs, By TechsAre you using AI to Troubleshoot w/ Refrigeration MentorIn this episode of the HVAC School Podcast, Trevor Matthews and Bryan dive deep into the transformative potential of artificial intelligence (AI) in the refrigeration and HVAC industries. They explore how AI is not a new concept in their field, discussing how manufacturers like Copeland, Sporlan, and Danfoss have long incorporated AI-driven tools and repositories of information into their applications. The conversation goes beyond simple technological novelty, positioning AI as a powerful learning and troubleshooting assistant for technicians. The discussion highlights AI's role as a supportive tool rather than a job replacement. Trevor emphasizes that AI cannot...
2025-02-0637 min
HVAC School - For Techs, By TechsThe Buyout Epidemic - ManifestoIn this episode of the HVAC School Podcast, Bryan shares his perspective on the growing trend of private equity buyouts and investments in the trades, particularly in home services businesses. He addresses the "buyout epidemic" with a balanced view, acknowledging the significant financial opportunities these deals present while expressing concerns about their long-term impact on the industry and its people. Bryan discusses how private equity firms are particularly attracted to home services businesses due to their potential for high margins, especially through implementing standardized processes, sales training, and often significant price increases. While he doesn't condemn the...
2025-01-3030 min
HVAC School - For Techs, By TechsManufacturer Responsibility - ManifestoIn this episode of the HVAC School podcast, Bryan shares his "Manufacturer Responsibility Manifesto," a document he wrote over two years ago but held back from publishing until now. The manifesto addresses growing concerns about the burden being placed on HVAC contractors, particularly smaller businesses, due to manufacturing quality issues and warranty policies. The industry has undergone significant changes since the 1990s, including stricter refrigerant regulations and an increase in parts failures. While manufacturers offer longer warranty periods now than in the past (often 10+ years compared to 3-5 years previously), these warranties often don't cover crucial expenses...
2025-01-1629 min
HVAC School - For Techs, By TechsCan You Coat Fiberglass?In this episode of the HVAC School Podcast, Bryan interviews Zach about duct coatings and their applications in HVAC systems, particularly focusing on the Hardcast RE500 product. The discussion delves into the importance of proper duct coating applications and their benefits for both contractors and customers. Zach, who has extensive experience in duct cleaning and restoration, shares his expertise on the proper application and benefits of duct coating systems. The conversation explores how modern ductboard comes with a clear coat that offers some protection, but additional coating can provide significant benefits, especially in high-velocity areas near equipment...
2025-01-0229 min
HVAC School - For Techs, By TechsDuct Cleaning - How Long & How Often?In this episode of the HVAC School podcast, Bryan interviews Zach from Southeast Clean Air Solutions about the intricacies of professional duct cleaning. Zach specializes in addressing duct cleaning challenges specific to the Southeastern climate, with a particular focus on fiberglass-lined ducts. The conversation delves into the complexities of cleaning different types of duct systems, highlighting the significant variations in time, technique, and approach depending on the duct materials and home configuration. The discussion reveals that duct cleaning is far more nuanced than many homeowners realize. A typical residential duct cleaning can take between six to eight...
2024-12-1929 min
HVAC School - For Techs, By TechsJim Bergmann & MQ Update from NCI SummitBryan sits down with Jim Bergmann at the NCI Summit in Asheville, North Carolina, to discuss the latest developments in HVAC technology, training, and industry trends. The discussion delves into the evolution of MeasureQuick 3.0, highlighting the shift back to a more technician-centric approach. Jim explains how they've redesigned the software to put gauges front and center and implemented an AI-driven system to guide technicians through the process step-by-step. This renewed focus on the end-user experience aims to make the product more valuable for technicians and, in turn, more likely to be adopted as part of standard operating...
2024-10-1742 min
HVAC School - For Techs, By TechsQ&A - System Won't Dehumidify? - Short #214In this short podcast episode, Bryan answers a listener-submitted question about an HVAC system that won't dehumidify. This question was submitted by a homeowner with a Carrier heat pump with an attic air handler that cools but won't dehumidify on the hottest days of summer. One of the past companies that serviced the system added charge, but the problem wasn't resolved. This case doesn't seem to be a sizing issue, as the insufficient dehumidification is happening on the hottest days. Normally, sizing issues happen during the edge seasons when temperatures aren't as high as in the summer...
2024-10-1509 min
HVAC School - For Techs, By TechsWhat Is Up With Blower Amps & Watts w/ Steve RogersBryan Orr and Steve Rogers dive deep into measuring power consumption in HVAC blower motors, particularly focusing on the differences between PSC (Permanent Split Capacitor) and ECM (Electronically Commutated Motor) technologies. The discussion stems from a question raised at an educators' conference about the accuracy of clamp-on meters in measuring blower motor watt draw, as specified in the ACCA Standard 310. Steve shares insights from extensive testing conducted with different types of motors and power meters. The tests compared PSC motors with constant torque and constant airflow ECM motors across various static pressure conditions. One key finding was...
2024-10-1046 min
HVAC School - For Techs, By TechsQ&A - Sizing Heat Pumps for Heat Load - Short #213In this short Q&A podcast, Bryan answers a listener-submitted question about sizing heat pumps for heat load in heating mode, something that we haven't talked much about in the past due to the greater need for cooling in our market. In most cases across the country, a heat pump's heating loads will be greater than the cooling loads. There is a greater swing between the desired temperature and the actual temperature in heating mode than in cooling mode (in terms of sensible BTUs). We don't want to oversize for cooling because of its lower efficiency, comfort...
2024-10-0809 min
HVAC School - For Techs, By TechsWater Issues - Spidey SenseThis episode of the HVAC School podcast dives deep into the often-overlooked but critical topic of water issues in HVAC systems. Bryan and Bert discuss the various causes of water leaks and condensation problems, and they explain how to prevent them. They emphasize that water damage is not an inevitable part of HVAC systems and that with proper attention to detail and understanding of the underlying causes, most issues can be prevented. "Spidey Sense" refers to a heightened situational awareness that allows technicians to anticipate and prevent water-related problems. Common water-related problems include drain backups, improper trap...
2024-10-0341 min
HVAC School - For Techs, By TechsAux Lockout & Balance Point w/ SensiIn this informative episode of the HVAC School podcast, host Bryan Orr sits down with Tom Lorenz to talk about some of the Sensi thermostat features, particularly aux lockout and balance point. Tom leads the traditional and smart thermostat lines at Copeland and has over 25 years of experience in the industry. The discussion focuses on two key features of heat pump thermostats: auxiliary lockout and balance point. Tom explains that auxiliary lockout is crucial for energy efficiency, as auxiliary heat (whether electric or propane) is typically more expensive than heat pump operation. All Sensi thermostats now include...
2024-09-2625 min
HVAC School - For Techs, By TechsQ&A - How to Deploy a Dehum - Short #211In this short Q&A podcast episode, Bryan answers Howard's question about how to deploy a dehumidifier (dehum) in a sealed home. He addresses things like location and fresh air requirements in green-grass markets with high dew points. Before deploying a dehumidifier, you will need to know about the climate, the structure, and the client's complaints, budget, and comfort goals. You need to make sure the HVAC system is properly installed; the most common obstacle to proper dehumidification is oversizing. HVAC systems need a cold coil to pull moisture out of the air, and we need adequate (b...
2024-09-2409 min
HVAC School - For Techs, By TechsLeak Detection - Spidey SenseIn this episode of the Spidey Sense series, Bryan and Bert dive deep into the art of refrigerant leak detection, sharing their wealth of experience and practical tips for HVAC technicians. They emphasize the importance of using one's senses and observation skills before relying solely on electronic tools, highlighting how this "Spidey Sense" approach is a hallmark of senior-level expertise in the field. Visual and tactile cues, including warm suction lines, frosted components, and signs of oil, are vital. Different symptoms point to specific kinds of leaks and various scenarios, so you need to understand the behavior...
2024-09-1942 min
HVAC School - For Techs, By TechsQ&A - Vacuum Questions Answereddiv]:bg-bg-300 [&_pre]:-mr-4 md:[&_pre]:-mr-9"> _*]:min-w-0"> In this episode of the HVAC School podcast, host Bryan dives deep into the topic of vacuum in HVAC and refrigeration systems. He addresses two questions from social media about vacuum, expanding them into a comprehensive discussion of best practices, common issues, and techniques for effective vacuum procedures. Bryan starts by explaining where to ideally locate a vacuum pump when working on a refrigeration system. He emphasizes the importance of pulling from the largest volume locations possible, often at multi-position service valves on the compressor or wherever accessible ports...
2024-09-1220 min
HVAC School - For Techs, By TechsHow Do You Ramp Up Your Team to Effectively Service and Support CO2 Applications?In this informative episode, Bryan Orr speaks with Andre Patenaude from Copeland about CO2 refrigeration systems. They dive deep into the unique characteristics and challenges of working with CO2 as a refrigerant, providing valuable insights for HVAC and refrigeration professionals looking to expand their knowledge in this growing field. Andre explains the reasons behind the increasing adoption of CO2 systems, including regulatory pressures and environmental benefits. He details the peculiarities of CO2 refrigerant, such as its high triple point and lower critical point, which create unique operating conditions not seen in traditional refrigerants. The conversation covers the...
2024-09-0555 min
HVAC School - For Techs, By TechsQ&A - Stubborn Old Techs - Short #207In this short podcast of the Q&A series, Bryan answers a question about "stubborn old techs" (submitted by Luke via Speakpipe). In several cases, old-school techs are "being positional," which means they feel that they have a piece of turf to protect; they see challenges to the status quo as a threat. They may want to defend the way that they do and have always done things. Many of these people also have insecurities and have dealt with a lot of frustration and disrespect over the years, but they also have a lot to offer. Younger...
2024-08-2009 min
HVAC School - For Techs, By TechsPreventing Low Voltage IssuesIn this episode, Bryan and Bert dive deep into the world of low voltage wiring in HVAC systems. They discuss common mistakes, best practices, and troubleshooting techniques that technicians and contractors should be aware of when dealing with control wiring. The conversation begins with a focus on mechanical issues, such as running wires in places where they can be damaged and poor splicing techniques. Bryan and Bert emphasize the importance of proper wire stripping, both for the outer jacket of control cables and individual conductors. They share tips on how to avoid damaging wires during installation and...
2024-08-0143 min
HVAC School - For Techs, By TechsMake Summer Work for You w/ Matt BrunerIn this episode of the HVAC School podcast, host Bryan Orr welcomes Matt Bruner to discuss the concept of a "summer survival guide" for HVAC professionals. They explore strategies for maintaining work-life balance during the busy summer season and share personal experiences on prioritizing family and personal well-being while managing the demands of the HVAC industry. The conversation delves into the importance of intentional planning before the summer rush begins. Matt shares how he and his family implement practices like scheduling an end-of-summer vacation, utilizing daycare services, and outsourcing lawn care to create more family time. Bryan...
2024-07-1144 min
HVAC School - For Techs, By TechsHow to Size Dehums w/ Tim De StasioIn this episode of the HVAC School podcast, host Bryan Orr interviews Tim De Stasio, an experienced HVAC practitioner and consultant. Tim shares his journey in the HVAC industry, from his early days in vocational school to running his own contracting business for 12 years. He now focuses on consulting, design, and contractor training, allowing him to pursue his passion for HVAC while sharing his knowledge with others. The conversation delves deep into the world of dehumidifiers, exploring their importance in modern HVAC systems, especially in humid climates. Tim emphasizes the need for supplementary dehumidification in many homes...
2024-07-0451 min
HVAC School - For Techs, By TechsWhat's your summer triage strategy w/ Kevin HartThis episode dives into an interesting and pragmatic discussion about how HVAC contractors can better balance their workload throughout the year. Kevin from Haven shares insights from observing HVAC businesses across the country and how some are taking a more strategic approach to triaging work. The main idea is to get systems up and running in the peak summer months when demand is highest, while also collecting data and making notes for more in-depth commissioning, ductwork upgrades, IAQ improvements, etc. that can be tackled in the fall "shoulder season." The hosts discuss the market forces that drive...
2024-06-0740 min
HVAC School - For Techs, By TechsWhat is Standard 310? w/ Eric Kaiser & Chris HughesStandard 310 is a technical workflow created by ACCA, ResNet, and ANSI for grading the installation of HVAC systems, typically in new home construction. It plays a crucial role in obtaining Energy Star certification, which can qualify homeowners for tax credits under the Inflation Reduction Act. The five steps of Standard 310 are design review, duct leakage test, total system airflow, blower fan watt draw, and refrigerant charge verification. In this podcast episode, host Bryan Orr is joined by guests Chris Hughes and Eric Kaiser to discuss Standard 310 and its implications for HVAC contractors. The standard aims...
2024-05-301h 00
HVAC School - For Techs, By TechsDuct Leaks - Measuring, Preventing & Repairing w/ Sam MyersThis episode featured Bryan Orr interviewing Sam Myers, the building science consultant at Retrotec. Retrotec manufactures products like blower doors and duct testers for measuring air tightness and leakage in buildings. Sam discussed his role at Retrotec, which involves training contractors on using their tools properly, product design, software testing, presenting at conferences, and running trade show booths. He talked about the demanding travel schedule this requires but also the rewards of educating the industry. The main topic was duct leakage testing - why it's important, how it's done, interpreting the results, and investigating and...
2024-05-2342 min
HVAC School - For Techs, By TechsQ&A - Starting an Internal Training Program - Short #195In this short Q&A episode, Bryan answers podcast listener Cooper's question about starting an internal training program. Eugene Silberstein has been on the podcast before to offer his perspective on this topic, which you can listen to HERE. Bryan recommends a combination approach: instructor-led, hands-on, and self-paced learning, all deployed together. Hands-on learning often gets missed, and we can give inexperienced techs experience with some basic troubleshooting tasks or breaking down and reassembling things. The Socratic method can also be employed here; the instructor can ask their trainees questions instead of the other way around. When th...
2024-05-1409 min
HVAC School - For Techs, By TechsBryan Orr - Humility in Thought LeadershipThis podcast episode is Bryan Orr's presentation at the 6th Annual HVACR Training Symposium: "Humility in Thought Leadership." Bryan reflects on his own journey as a trades educator, business owner, husband, and father, sharing personal anecdotes and insights that resonate with anyone in a position of influence. Bryan begins by acknowledging the challenge of maintaining humility in the face of success and recognition. He emphasizes the need to continually shift our focus from a mindset of "deserving" to one of "serving" others. By embracing humility, we not only become more effective leaders but also create an environment...
2024-05-0958 min
HVAC School - For Techs, By TechsFocus of Your Goals w/ Refrigeration MentorIn 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 his experience of setting a goal to buy his first house and how writing down the specifics, such as the number of bedrooms and bathrooms, helped him achieve that goal within a few years. He stresses the need to start small, with easily achievable goals, and...
2024-03-2844 min
HVAC School - For Techs, By TechsManual J in 15 Minutes?Shelby Breger, co-founder of Conduit Tech, joins Bryan Orr on the HVAC School Podcast to discuss her company's innovative lidar-enabled design and sales software tool for HVAC contractors. Conduit Tech's software utilizes lidar sensors in iPads and iPhones to scan homes and create 3D models and 2D floor plans. It overlays load calculations factoring in property data, orientation, cooling/heating degree days, and building materials. This allows contractors to perform detailed load calculations on-site in just 15 minutes or less while engaging homeowners visually. Breger explains that the core goal is to empower contractors to deliver...
2024-03-2138 min
HVAC School - For Techs, By TechsThe Gift of Security and Learning w/ Jennifer ManzoIn this episode of the HVAC School Podcast, host Bryan Orr speaks with Jennifer Manzo, founder of HVA-Chicks Coalition. Jennifer shares her unique background as a longtime teacher and homeschooler who stumbled into the HVAC trade while researching vocational options for her homeschooling students. They discuss the inspiration behind HVA-Chicks, a free training coalition offering technical, career, and personal support to women in HVAC. This includes customized training plans, connecting members with childcare assistance, legal support for discrimination issues, job search help, and more. Jennifer also manages a free 24/7 tech support phone line with several experienced volunteers...
2024-03-1436 min
HVAC School - For Techs, By TechsUsing the Roomulator w/ Chris HughesIn this episode of the HVAC School Podcast, host Bryan Orr speaks with Chris Hughes of The Energy Conservatory (TEC) about using the Roomulator card and DG-8 manometer for room pressurization testing. Chris provides background on how he came up with the idea for the Roomulator. He wanted an easy way for technicians to properly size passive returns to relieve pressure imbalances between bedrooms and the main body of a home. The Roomulator card enables technicians to quickly measure door undercuts and size transfer ducts, grilles, etc., to reduce room pressures to 3 Pascals or less per ENERGY...
2024-03-0744 min
HVAC School - For Techs, By TechsMaking Family Business Work w/ Leilani OrrIn this podcast episode, Bryan has an enjoyable conversation with his wife Leilani about navigating family relationships while building a business. They discuss the challenges and benefits of mixing family and work, setting boundaries, and maintaining perspective. Bryan starts by admitting he felt intimidated to have Leilani on the podcast before, joking about her "big muscles and dominating presence." Leilani jokes back, saying Bryan seems less intimidated now that they've been together so long. They then dive into the topic of starting their family business, Kalos, back in 2005. Leilani remembers feeling excited but also some "...
2024-02-2235 min
HVAC School - For Techs, By TechsVacuum and Recovery in an A2L World with Jesse StewartIn this podcast, Bryan Orr interviews Jesse Stewart from NAVAC about A2L refrigerants and compatible tools and safety procedures. They discuss how NAVAC has a full line of A2L-compatible tools for evacuation and recovery, including the new NR7 and upgraded models of the NRDDF and NRDD. Jesse explains key features that make tools A2L compatible, like DC motors, sparkless designs, insulated electrical terminations, soft power switches, and fans. He notes that NAVAC has been designing tools this way in preparation for wider A2L adoption. The conversation covers some evolving questions around...
2024-01-2428 min
HVAC School - For Techs, By TechsHow Better Truck Stock Makes the Trade Better w/ Jim FultzThis live podcast from AHR Expo 2024 discusses the costs of truck rolls for HVAC technicians and how technicians and companies can reduce those costs. Jim and Bryan highlight that every time a tech has to go to the supply house to get parts, the company loses money in potential service calls that could have been completed. They emphasize stocking trucks properly so that technicians can complete repairs efficiently without leaving jobsites. Jim talks about the White Rogers 50M56X8-43 universal control board, which auto-configures itself to different furnace models. He explains how it simplifies installations and...
2024-01-2447 min
HVAC School - For Techs, By TechsSolving & Preventing Oil Issues in Rack RefrigerationIn this HVAC podcast episode, hosts Bryan Orr and Matthew Taylor (refrigeration leader and trainer at Kalos Services) discuss oil management and considerations in supermarket refrigeration systems, with a focus on solving & preventing oil issues. They talk about the importance of stable system operation and how oil flows through both active and passive systems in these larger built-up racks. Matthew explains that in a rack system, oil is actively separated and returned to the compressors through a dedicated system. However, not all oil gets captured this way, so the passive system of oil returning through the refrigeration...
2023-12-2849 min
HVAC School - For Techs, By TechsCommon Callbacks and Failed Inspections on InstallIn this episode of HVAC School, hosts Bryan Orr and Bert discuss practical tips for preventing callbacks and failed inspections in residential HVAC installs and maintenance. Bryan and Bert stress the importance of getting the basics right, like properly cleaning condensate drains, ensuring proper drain pitch, and sealing ducts completely before relying on tapes and mastic to cover gaps. They emphasize verifying full system operation at the end of a job, from checking that drains flow freely to testing float switches and pressure testing for leaks. Bryan and Bert also cover wire and breaker sizing for equipment...
2023-12-0751 min
HVAC School - For Techs, By TechsWhat's Different About Pool Heaters w/ BertIn this podcast, Bryan Orr and Bert discuss various aspects of pool heaters, focusing on issues that make them different from typical HVAC systems. They cover the basics of pool heaters - the main types (heat pumps and gas heaters) and how they operate similarly or differently from things HVAC techs work on regularly. The bulk of the 45-minute podcast looks at common service and troubleshooting situations with pool heaters, which are usually installed by pool contractors initially and not HVAC contractors. Bryan and Bert talk through typical causes of common error codes and problems like units...
2023-11-3046 min
HVAC School - For Techs, By TechsAll About 90% FurnacesBryan Orr hosted a live podcast discussion all about 90% efficient furnaces with HVAC professionals Ty Branaman, Adam Mufich, and Matthew Bruner. They covered the basics of how 90% furnaces work compared to traditional 80% furnaces, troubleshooting tips, and best practices for installation and service. A key difference with 90% furnaces is the addition of a secondary heat exchanger that extracts more heat from the exhaust gases before they go out the flue. This allows the furnace to achieve at least 90% efficiency. The condensing of water vapor in the exhaust also releases latent heat. However, the acidic condensate must be properly...
2023-11-231h 00
HVAC School - For Techs, By TechsWhy and How of Combustion Analysis w/ Tyler NelsonBryan Orr interviews Tyler Nelson, an HVAC expert with over 20 years of experience as a contractor. They have an in-depth discussion about combustion analysis and why it is becoming increasingly important for HVAC technicians to utilize this process. The conversation provides an overview of combustion analysis benefits and why HVAC pros should incorporate it into their standard operating procedures. Tyler offers insightful perspectives from his decades of contracting experience, including his knowledge of how field conditions vary and factory settings may not translate perfectly. Carbon monoxide poses several dangers to customers and HVAC technicians. Tyler...
2023-11-091h 01
HVAC School - For Techs, By TechsWiring Refrigerated Cases w/ Nathan & PhilPhil Barr and Nathan Orr join the podcast to talk about wiring refrigerated cases in commercial spaces, including convenience stores and supermarkets. Cases may be medium-temp (or high-temp, in some cases) or low-temp. Medium-temp cases can typically defrost on their own during the off cycle, and low-temp cases may have electric or hot-gas defrost to help get ice off the coil at set intervals. Each system has an evaporator (and fans), compressor, condenser, and metering device (often a TXV or EEV), and low-temp refrigeration may have anti-sweat heaters, EPRs, and other components to manage. Challenges...
2023-09-1444 min
HVAC School - For Techs, By TechsPipefitting Best PracticesThis podcast is based on a Kalos meeting about pipefitting best practices, particularly in commercial refrigeration applications. It begins with a few words about quality workmanship by the Kalos founder and CEO, Robert Orr. Pipefitting consists of repairs and joining metals; when joining metals, we need to liquify the alloy and draw it into the joint via capillary action. When pipefitting, oxygen can present some problems by coating the inside of the pipe with oxides that can contaminate the system. We can reduce the likelihood of oxide formation by flowing nitrogen while brazing; purging nitrogen displaces the...
2023-07-201h 16
HVAC School - For Techs, By TechsWhere to Place the Micron Gauge - Short #168In this short podcast, Bryan talks about where to place the micron gauge during evacuation and how to think about micron gauge positioning. Evacuation (deep vacuum) doesn't remove solid contaminants, and vaporizing liquid water is a time-consuming process; its main purpose is to remove water vapor, air, and nitrogen gases from the HVAC/R system. When you pull down below 500 microns and hold that pressure, we can make sure we have a clean, dry, and tight (leak-free) system. As we started using R-410A and POE oil, water in the system became a much bigger issue than i...
2023-07-0410 min
HVAC School - For Techs, By TechsHumidity Utopia w/ Nikki & BryanThis podcast episode is Nikki Krueger (Santa Fe Dehumidifiers) and Bryan's 2023 HVACR Training Symposium session about how we can optimize dehumidification and efficiency to create an HVAC design and humidity utopia. While we attempt to achieve comfort and high indoor air quality in humid climates, we may find challenges integrating these with the HVAC system and getting customers to understand the need for proper dehumidification. Older homes that are built "leaky" allow for uncontrolled infiltration and exfiltration, but newer constructions are a lot tighter and rely on mechanical ventilation to control where the outdoor air comes from...
2023-05-1156 min
HVAC School - For Techs, By TechsLogical Fallacies - False Cause & StrawmanNathan Orr joins Bryan to talk about some logical fallacies, namely the false cause and strawman. They explain how those fallacies show up in the trade. It's difficult to present arguments without using fallacies, but people tend to rely on fallacies to uphold extreme religious or ideological viewpoints or conspiracy theories. Fallacies are also often easier to communicate than nuanced science and data. "False cause" relates to the phrase "correlation does not equal causation." It can be tempting to link coincidences and say that one thing causes the other, but that could very well not...
2022-07-0742 min
HVAC School - For Techs, By TechsThreaded Connection Tips - Short #149In this short podcast episode, Bryan shares some of his top threaded connection tips. He also clears up some confusion about connection types. Threaded connections include flare and compression-type fittings (like chatleff or Aeroquip fittings). The threads don't actually make the seal; the pressure pushing the surfaces together is what makes a seal. Bryan doesn't recommend putting traditional thread locks on flares, but refrigerant oil or mild assembly lubricants can help the flare come together more smoothly without imperfections. However, you need to be careful when using a torque wrench and use the lowest acceptable s...
2022-06-2814 min
HVAC School - For Techs, By TechsEthics - Grit and DisciplineBryan and Robert Orr continue their discussion about ethics by talking about what it means to have grit and discipline in business. They talk about what those characteristics look like in business and in life, and they mention some good books. Grit is a trait that can contribute to an ethical way of life; showing grit means that you follow through with a project until you get the results you want. Both physical and emotional grit are strengths, and those things tend to be more important than talent in our field. Compared to discipline, grit i...
2022-06-0925 min
HVAC School - For Techs, By TechsEthics - IntegrityBryan and Robert Orr talk about ethics and what it means to have integrity when running a family business. Robert is a lifelong tradesman who is a licensed construction contractor, and he has overseen the construction side of Kalos for many years. Robert initially started off at the Air Force Academy and realized that he didn't feel that the military was right for him. While in Florida, Robert fell into the trades and learned both hard skills and ethics in the process. He started his own house-wiring business at age 21. Later, he went into home inspection and...
2022-06-0233 min
HVAC School - For Techs, By TechsGrow a Business Through Customer Experience - Throwback BonusThis podcast episode is a throwback to one of Bryan's first small business podcasts. In this old episode, Australian electrician and businessman Joshua Nicholls explains how he built a business by focusing on customer experience and branding. Bryan grew Kalos similarly, so they talk about the journey of going from "man-in-a-van" businesses to larger businesses with several employees. Joshua wanted to bring old-school manners and integrity to the business world, and that's how he branded his business. The focus on customer service over marketing earned the customers' respect, and customers were happy to remain loyal t...
2021-12-1635 min
HVAC School - For Techs, By TechsDiagnose and Prevent Compressor Short CyclingIn this podcast episode, Bryan and Trevor Matthews discuss compressor short cycling. They discuss how to diagnose and prevent that issue. Trevor and Bryan primarily refer to the Bulletin AE17-1262 throughout this episode, which you can find HERE. Compressor misdiagnosis is very common, but we generally encounter two types of compressor failures: electrical failures and lubrication failures. Short cycling causes a loss of oil in the compressor, which may lead to lubrication-related failure. Each time a compressor starts, there is a reduction in suction pressure; the pressure drop then causes the saturation pressure to drop. That...
2021-03-1136 min
HVAC School - For Techs, By TechsSwaging and Flaring Tips w/ AC Service TechIn this episode, Bryan and Craig Migliaccio (AC Service Tech) talk about some best practices you can use while swaging and flaring copper. There are a few different ways you can flare copper. Craig likes using a round deburring tool before flaring the copper. After the burr has been cleanly removed, Craig likes using an eccentric flaring tool for the actual flaring. Bryan's favorite flaring tool is the NAVAC battery-powered flaring tool for quick, accurate flares. Both Craig and Bryan agree that it's better not to deburr if you're likely to drop the burr or copper shavings...
2021-02-2525 min
HVAC School - For Techs, By TechsQ&A with Richard, Ross, and Evan TretheweyIn this free-flowing conversation, the Trethewey family talks about growing up with This Old House, what the show is like behind the scenes, what Rich misses about the past, what the future holds for the trade, and some nerdy specifics between Bryan and Ross. The show business is a collaborative effort between the producers and talent (even though they're real people, not actors), and the Trethewey boys find the end result almost cathartic. This Old House was never scripted; there were beats and predictions about the content, but the content is all authentic. As the t...
2020-04-1952 min
HVAC School - For Techs, By TechsMicron Gauges - Products by ProsThis podcast is by Sal at Products by Pros, featuring Bryan Orr of HVAC School. In this episode, Sal asks Bryan all about micron gauges. Products by Pros Guest: Bryan Orr What should technicians look at when deciding on a micron gauge? You should look for superior accuracy and resolution, especially if you'll be doing decay testing. You need to see what the trends are in clear detail. (The Bluvac app makes that easy.) Why should a tech even use a micron gauge? Yo...
2020-02-0329 min
HVAC School - For Techs, By TechsShort #86 - HoodwinkedIn this short podcast episode, Bryan talks about the times he has been hoodwinked in his career. It's time to name and shame. One time at a trade show, Bryan came across a product called KVAR. KVAR is already an electrical term for kilovolt-amps reactive; those are volt-amps that show up and generate heat but don't do anything useful, just like foam in a beer mug. So, the product supposedly balanced out the power factor to save energy. However, power companies don't charge based on VA; they charge based on wattage, which already accounts for the power...
2020-01-1413 min
HVAC School - For Techs, By TechsShort #76 - The Freon Sniffer (A True Story)In this true story from Bryan's teen years, you learn about the "Freon Sniffer:" what inspired him to become an HVAC/R technician (maybe). When Bryan was working with his uncle at age 14, he was an electrical apprentice who worked in grocery stores. He installed "pink lights," which were lights that hung on aircraft cable over produce displays. (The aircraft cable came from Bryan's grandfather's aircraft junkyard.) The pink lights were difficult to install, and many people were unwilling to do the installation. However, Bryan and his family were willing to install that difficult equipment...
2019-10-1509 min
HVAC School - For Techs, By TechsDifficult Customers #LIVEIn this live conversation, we discuss some real-life situations with difficult customers. We also cover some helpful tips we learned along the way. When Bryan started Kalos, there was one situation where a customer blamed him for lying about a customer diagnosis. So, that was how Bryan fired his first customer. However, many of us want to fire several customers, and that's when we have to look in the mirror and evaluate ourselves. When the problem truly isn't with us, we have to make a choice to say, "Sorry you feel that way," and walk away after...
2019-09-151h 03
HVAC School - For Techs, By TechsGrocery Refrigeration Talk #LIVE n this live podcast episode, we have a fun conversation talking with Nathan Orr and Kevin Compass about grocery refrigeration. The most common types of calls are those where the machine is "not making temp." Usually, the cases can't maintain temperature due to frozen evaporator coils or backed-up drains. On low-temperature/freezer applications, we must rely on electrical or hot gas defrost to mitigate frozen coils. Hot gas defrost is a complicated but quintessential part of low-temperature grocery refrigeration because the coils easily freeze. The discharge gas has to go to the evaporator coil and...
2019-09-0659 min
HVAC School - For Techs, By TechsSuction Pressure in Market Refrigeration Nathan Orr is back. In this podcast, we discuss suction pressure in market refrigeration and how rack techs think about it differently than HVAC. On parallel rack systems, suction temperature helps technicians determine the cooling load and how to get that to temperature. You run your discharge air temperature a bit lower than the product temperature. Your suction pressure also lets you know if your coil is reaching the correct temperature. Coil temp, also called suction saturation temperature (SST), is a vital metric for rack system operation. Lower suction pressure indicates a lower coil temperature or SST.
2019-06-2035 min
HVAC School - For Techs, By TechsShort #58 - A Fair PriceIn this short podcast episode, Bryan covers pricing for HVAC/R parts and services; he explains how to come up with a fair price. To be able to price fairly, we need to understand what value and sacrifice look like. In the HVAC industry, we value hard work and growth in a way that some other people don't. We provide parts and labor and sell those in the free market, so we can control how much we charge for those. The price of a part means NOTHING in the industry. Instead, we primarily set prices...
2019-06-1121 min
HVAC School - For Techs, By TechsCan Manufacturers Specs Be a Crutch? Bert and Bryan discuss the commonly repeated phrase, "refer to manufacturer's specs," in HVAC work. They discuss when referring to the manufacturer's specs works and when it feels like a crutch. Sometimes, you need to read the manufacturer's specs so that you can use the correct kits and components if specific parts or tools are necessary. Without knowing the specific product numbers given in the specs, you wouldn't be able to do the job properly. The manufacturer's literature can also explain equipment performance under certain conditions. In very specific applications, including VRF/VRV systems, you will want...
2019-03-2837 min
HVAC School - For Techs, By TechsWork-Life Balance, Real Talk w/ Bert Bryan and Bert talk through a real-life issue we all face as techs: work-life balance. Bert's recent video "triggered" Bryan a bit, so they talk through it. Bryan believes that the work-life balance doesn't necessarily exist; instead of creating balance, he believes in a focus on discipline in work and home life as you're present to each of them. Instead of setting rules for dedicating his time, Bryan focuses on setting goals that can improve multiple parts of his life. That is how he is able to work at a high level in his company, make videos...
2019-03-211h 11
HVAC School - For Techs, By TechsShort 15 - Testing Capacitors, A Practical ApproachIn this short podcast episode, Bryan Orr discusses the best practice methods for testing run capacitors in the field. We understand the capacitor to be a voltage storage device. We can benefit from comparing the capacitor to a balloon that inflates and deflates with electrons as the alternating current changes (60 times per second). A capacitor causes a phase shift and allows there to be current on the start winding. So, when a run capacitor fails, you won't have current on the start winding. The old-fashioned way of testing a run capacitor was to take an...
2018-07-2412 min
HVAC School - For Techs, By TechsSeasons of HVACIn this episode, Bryan Orr talks about how the seasons affect our HVAC work and how to manage stress during the busy season. If you work in the trade, you will notice that we have busy and slow seasons. If you own a business, you understand the pressure that you're under to serve the community during those times. Hiring and training people for the busy seasons is difficult and may not be feasible for many companies. Fortunately, the busy season can bring out the good in other people who want to support their coworkers and community.
2018-07-1922 min
HVAC School - For Techs, By TechsBeating the Ego, Ignorance, and Insecurity Monster w/ Andrew GreavesIn this simultaneously heavy and lighthearted discussion, Bryan Orr and Andrew Greaves discuss ego, Dunning-Kruger, insecurity, and apprenticeship in the trades. In the early days, apprenticeships were quite different from the way they are today. One-on-one mentorship used to be a much more significant component of early apprenticeships, but that style of training is uncommon for today's apprentices in all sorts of trades. As a result, many young technicians enter the field too quickly and don't have the training to perform a job skillfully. As such, many inexperienced techs become confident with bare-minimum work because...
2018-03-0136 min
HVAC School - For Techs, By TechsBonus - What you missed at AHR w/ Bill SpohnIn this episode, Bill and Bryan recap the 2018 AHR conference with what they learned and what you can expect to see in the HVAC/R trade in the next year. There were 2100 exhibitors who gave demonstrations and discussed products. AHR shows the real scope of the HVAC/R industry, and it is an excellent opportunity to learn more about the trade and do some networking. At the AHR conference, there were some demonstrations that may indicate a paradigm shift in the industry's best practices. For example, the AccuTools booth projected the rate of evacuation through three hoses...
2018-01-311h 00
HVAC School - For Techs, By TechsElectronic Expansion Valves (EEV) w/ Jamie Kitchen In today's podcast, Bryan and Jamie talk about the electronic expansion valve (EEV). Bryan and Jamie describe how EEVs work and the reason they exist. In the process, the hosts also review a wide range of metering devices. We made this podcast to address the rising demand for EEVs in the aftermarket element of the HVAC business. Like the TXV, the EEV is a metering device. Metering devices create a pressure drop as refrigerant moves from the liquid line to the evaporator. Traditional refrigerators typically use capillary tube metering devices because they require a constant temperature and...
2017-09-271h 00
HVAC School - For Techs, By Techs(Bonus) HVAC/R Industry State of the Union In today's podcast episode, trade school student Chris Caldwell interviews Bryan about trends in the HVAC industry, his business, and the future. Chris works in the HVAC business as a service tech and attends trade school in Alabama. New trends include spending more money on testing instrumentation. Nowadays, there is a greater reliance on test instrumentation to produce accurate measurements. Diagnostics have certainly improved over time. On top of that, Bryan sees the industry's potential to improve other practices like evacuations. Customers have paid more attention to indoor air quality recently, and that trend is...
2017-09-2253 min
HVAC School - For Techs, By TechsIntroduction to CO2 w/ Andre PatenaudeIn this episode of the podcast, Bryan talks with Andre Patenaude from Emerson about CO2 refrigeration, and transcritical booster systems. Modern CO2 systems are efficient and effective due to their electrical controls and components, including case and high-pressure controls. Carbon dioxide (CO2) is a good refrigerant to address global climate change. From a sustainability standpoint, carbon dioxide is a superior refrigerant to HCFCs and HFCs. Carbon dioxide is also an A1 refrigerant, meaning that it is non-toxic and non-flammable. It is also inexpensive and compares to HFCs in cost. Unfortunately, it can rapidly change pressures and is...
2017-05-2541 min
HVAC School - For Techs, By TechsShould I Start My Own Business? w/ Tersh BlissetteTersh and Bryan were both techs working for other companies when they started their own businesses. This episode is a look back at what they got right, what they got wrong, and the top things that have worked over the years. In general, there are two types of HVAC business owners: the sales/business type and the technical type. Bryan and Tersh are both of the technical variety. These types of owners may be less familiar with the ownership and business organization side. Many current technicians will find themselves in a similar position if they decide to...
2017-03-0648 min
HVAC School - For Techs, By TechsHard Start Kits, Staybrite #8, Motor Ratings, AHR and Much MoreIn this episode of the HVAC School Podcast, we talk about some cool technologies and controversial tools. Joe Shearer joins us to talk about hard start kits. Some people believe that hard start kits are only suitable for one-time use, but Joe and Bryan believe that there's a lot more to it than that. If hard start kits are high-quality, then you could leave it on. However, if a unit has a hard-shutoff TXV, then it absolutely needs a hard start kit. Many techs are still hesitant about using hard start kits because they can damage the...
2017-02-0839 minHVAC School - For Techs, By TechsWhy a TXV instead of a TEV?.. or a CSV?In this episode of HVAC School, Bryan talks to Leslie about the deceptive TXV. Thermostatic expansion valves, also known as TXVs or TEVs, are metering devices that maintain superheat. They contain an external equalizer. External equalizers give the pressure reading that you would normally take with a suction gauge at the end of the evaporator coil. They supply the closing force to the TXV. TXVs also contain a sensing bulb. The sensing bulb picks up the superheat on the suction line. When a vapor is superheated, its temperature exceeds its saturation temperature. The superheat value...
2016-09-1645 min