In this episode of the HVAC School Podcast, host Bryan welcomes Jeff from Copeland to discuss the critical topic of flooding and slugging in compressors. Jeff, calling in from frigid Minnesota (at negative 19°F), explains the differences between these harmful conditions and how they can damage compressor systems.

The conversation begins by differentiating between flood back and flooded starts. Flood back occurs during system operation when control of the evaporator is lost, often due to airflow issues. Flooded starts happen after the system has been off, when refrigerant migrates to the compressor oil. Both conditions can lead to slugging - when liquid refrigerant enters the compression chamber, causing immediate damage to valves and internal components. While flood back and flooded starts may cause gradual damage over time, slugging can break compressor components instantly.

Jeff emphasizes that proper superheat levels are essential for compressor health, with most Copeland compressors requiring about 20 degrees of superheat at the compressor suction line. The discussion covers various preventative measures, including pump down systems, properly installed crankcase heaters, and the importance of maintaining appropriate refrigerant charge. Jeff notes that many technicians incorrectly assume crankcase heaters are only needed in cold climates, when they're actually crucial for preventing refrigerant migration in any environment.

• The difference between flood back (during operation) and flooded starts (when the system restarts)
• How slugging causes immediate damage to compressors while flooding causes progressive damage
• The importance of maintaining proper superheat (typically 20 degrees at the compressor)
• Common causes of flood back: dirty filters, improper airflow, duct problems, and incomplete defrosting
• How refrigerant is attracted to compressor oil even in vapor form
• Prevention strategies: pump down systems, proper crankcase heater installation and verification
• The impact of line sizing and total refrigerant charge on system reliability
• Why compressors are designed for vapor-in/vapor-out operation, not liquid handling
• The importance of consulting OEM literature and Copeland resources when troubleshooting
• Why it's critical to identify and fix the underlying cause before replacing a failed compressor

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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In 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 in the Central Florida market.

Some manufacturers have excellent base products but weak product lines, and others have weak base products but great specialized equipment. These judgments come from personal experience, and that's especially true of large manufacturers. Bryan recommends taking a measured, slow approach to products you deal with and then choosing the one that works best for your market and customers. You may find yourself gravitating towards equipment with certain components (like Copeland compressors, for example). You may gravitate towards manufacturers that take feedback about their products and have great local support. The "best brand" really depends on your experiences, values, and business needs.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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Join 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 HVAC business owners face with administrative work
• How the average small business owner spends 15.4 hours per week on non-revenue generating tasks
• The impact of private equity consolidation on local HVAC businesses
• How AI and human expertise can work together to support small contractors
• The importance of preserving craftsmanship and technical excellence in local HVAC businesses
• Ways to help small business owners focus on growth while reducing administrative burden

Whether you're a small business owner looking to optimize your operations or simply interested in the future of local HVAC, this conversation offers valuable insights into maintaining the soul of our industry while embracing new technologies and solutions. Learn about Helping Small Owners Succeed with WorkHero!

View results of Industry Pulse Survey at https://hvacrschool.com/industrypulse/ 

Work Hero website: www.workhero.pro 

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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In this livestream MeasureQuick Talks with Bert. This is an impromptu Talk with industry leaders, including Shelby Breger from Conduit and Joe Medosch from MeasureQuick, about how mobile technology is revolutionizing HVAC diagnostics and training. Featuring special guests discussing how modern tools like MeasureQuick and other diagnostic apps are making it easier for technicians of all experience levels to perform advanced diagnostics and build customer trust.

Key Topics:

• How technicians can leverage mobile technology for better diagnostics
• Using tablets and phones for real-time HVAC measurements
• Making technical data accessible and meaningful for customers
• Bridging the gap between experienced techs and new talent
• The future of HVAC diagnostics and training
• How technology can help attract new talent to the trades

Recorded live at AHR Expo 2025 with special guests from MeasureQuick and other industry leaders. Whether you're a seasoned pro or new to the trade, learn how modern diagnostic tools can help take your HVAC business to the next level.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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Join us as we sit down with Nick from Inficon at AHR Expo 2025 to discuss the latest innovations in Leak Detection Tech. We explore the evolution from halide torches to modern infrared sensors, and get an exclusive look at their newest product - the D-TEK Pro.

Key topics covered:

• The transition from heated diode to infrared sensor technology
• Deep dive into the Stratus leak detector's cloud hunting and pinpoint modes
• First look at the new D-TEK Pro with 10x airflow and enhanced sensitivity
• Discussion of forming gas applications in leak detection
• Tips for proper leak detector usage and maintenance
• New accessories for wind protection and insulation penetration

Whether you're a seasoned tech or new to the trade, this conversation covers essential knowledge about modern leak detection tools and techniques. Learn how these advances are making leak detection more reliable and efficient for HVAC/R professionals.

Find out more at www.inficon.com. 

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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Join 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 all-in-one leak detector.

Special guest appearances and impromptu conversations with other industry professionals make this casual livestream a fun peek into the energy and excitement of AHR Expo 2025!

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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In 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 while there are currently no regulations mandating new equipment, the company has proactively developed tools that are safety-certified and compatible with the new refrigerant types. They explore the intricacies of safety certifications like UL and CSA, explaining the differences between UL Listed and UL Verified, and highlighting the importance of intrinsically safe equipment, especially for tools like vacuum pumps and recovery machines.

NAVAC's approach goes beyond mere product promotion, with Jesse positioning himself as an educator first. The podcast delves into the technical details of A2L refrigerants, challenging common misconceptions and providing context about their flammability. Bryan and Jesse draw parallels with previous refrigerant transitions, noting how technicians were initially skeptical about R-410A but eventually adapted. They emphasize the importance of best practices, proper training, and understanding the actual risks associated with these new refrigerants, rather than succumbing to fear-based narratives.

The episode also showcases NAVAC's latest technological innovations, including smart probes, a Bluetooth scale, a smart valve for charging and recovery, and an advanced vacuum pump with a one-touch oil testing feature. These tools represent the company's commitment to improving technician efficiency and safety, with features that address real-world challenges faced by HVAC professionals.

• A2L Refrigerants
  • Myths and misconceptions about flammability
  • Comparison with previous refrigerant transitions
  • Safety considerations and best practices
• Safety Certifications
  • Differences between UL Listed and UL Verified
  • Importance of intrinsically safe equipment
  • CSA and ETL certifications
• NAVAC's New Tools
  • Smart probes with Bluetooth connectivity
  • Advanced vacuum pump with automatic oil testing
  • Flex manifold with digital accuracy and analog feel
  • Battery-operated pumps with improved run times
• Industry Trends
  • Preparation for A2L and future refrigerant transitions
  • Regulatory changes and efficiency standards
  • Importance of technician education and adaptation

• No current regulations require new tools for A2L refrigerants
• Proper training and best practices are crucial
• Technicians should focus on understanding new technologies
• Safety is about awareness and proper procedures, not fear

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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Roman Baugh and Donald Falese from VRF Tech Talk podcast takeover the HVAC School booth at AHR EXPO 2025. Join them as they talk about the new VRF products being unveiled, water cooled VRF up's and down's and why VRF is such a difficult trade work in. You will not want to miss this one!

Highlights include:

• Daikin's innovative modular air handler for residential applications
• Hisense's groundbreaking single-phase VRF system with integrated hot water heating
• New NFC technology for easier system diagnostics and commissioning
• Updates on vapor injection technology and inverter developments
• The emergence of air source heat pump chillers
• Latest innovations from manufacturers like Gree, TCL, Cooper Hunter and more

Whether you're a seasoned VRF technician or just getting started with inverter technology, this discussion covers everything from basic principles to cutting-edge developments in the industry. Roman and Donald break down complex technologies into understandable concepts while sharing their firsthand experience with the latest products at the expo.

Don't miss this opportunity to stay up-to-date with the future of HVAC technology!

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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Join us for a candid conversation with Bill Spohn from TruTech Tools at AHR Expo 2025! Bill shares exciting news about his planned retirement and transition plan for TruTech Tools, plus gives his insights on this year's 6th Annual HVAC/R Training Symposium where TruTech Tools was the title sponsor. We discuss the unique community atmosphere of both the Symposium and AHR Expo, exploring what makes these events special for the HVAC industry.

In this livestream, we dive into:

• Bill's announcement about transitioning TruTech Tools leadership to his son over the next 3 years
• A detailed recap of HVAC School Symposium and what made it successful
• Thoughts on building authentic industry communities and fostering connections
• Leadership insights and maintaining vision while giving team members agency
• Perspectives on AHR Expo 2025 and why it matters for HVAC professionals 

Don't forget to use offer code GETSCHOOLED for a great discount at trutechtools.com!

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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In 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 injury, and mobility issues. Bryan adds historical context by recounting how many Victorian-era "ghost stories" and fainting episodes coincided with the introduction of gas lighting in homes, suggesting these phenomena were likely CO poisoning symptoms. He also shares the little-known story of Walt Disney's parents, who tragically died from carbon monoxide poisoning in a house that Disney built for them.

The discussion shifts to practical applications, with Louise explaining the proper use of combustion analyzers and the importance of regular recertification. They emphasize that visual inspection alone is not sufficient for safety, and proper testing is essential for both client safety and equipment efficiency. The conversation concludes with information about UEI's ServicePlus Guaranteed program, which offers extended warranty coverage, same-day recertification turnaround, transparent pricing, and convenient shipping for analyzers.

• The dangers of carbon monoxide as an odorless, colorless, and tasteless gas
• How low-level CO exposure can cause serious health issues that mimic other conditions
• The limitations of standard home CO alarms, which typically won't trigger until reaching 70 PPM for 1-4 hours
• Proper combustion analyzer startup procedures (starting outside in fresh air)
• The importance of checking all combustion appliances in a home (furnaces, water heaters, ovens, etc.)
• Best practices for comprehensive testing, including "appliance sweep tests"
• Historical context of CO poisoning, including connections to Victorian ghost stories
• UEI's ServicePlus Guaranteed program for analyzer recertification and warranty extension
• The importance of regular recertification to ensure accurate readings and maintain warranty coverage
• Tips for helping clients schedule regular maintenance and safety checks

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

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In this episode of the HVAC School podcast, Bryan sits down with James and Jeff from Copeland to discuss the evolution and capabilities of Copeland's mobile applications, particularly focusing on the Copeland Mobile app and the new Scout feature. James, who has been with Copeland for 28 years, and Jeff, who works as a trainer, share their extensive knowledge about how these tools can benefit HVAC technicians in the field.

The conversation begins with a historical perspective on Copeland's service bulletins, which have been a valuable resource for technicians since the 1980s. The guests explain how these bulletins have evolved from being difficult to access to becoming readily available through the Copeland Mobile app. They discuss how the app has become an essential tool for technicians, allowing them to access critical information about compressors, including operating envelopes, current draw specifications, and troubleshooting guides.

The discussion then moves to the exciting new features in the Copeland Mobile app, including the integration of Fault Finder and the introduction of Scout, an AI-powered search tool that draws exclusively from Copeland's database. Scout not only provides answers to technical questions but also points users to relevant resources and documentation. The guests emphasize how these tools can help reduce unnecessary compressor replacements, noting that 30-40% of returned compressors have nothing wrong with them.

Key Topics Covered:

• Evolution of Copeland service bulletins from paper to digital format
• Features of the Copeland Mobile app, including:
  • Operating envelope visualization
  • Current draw specifications
  • Compressor cross-reference tools
  • Warranty status checking
  • Mechanical specifications and oil charge information
  • Wiring diagrams and troubleshooting guides
• Introduction of Scout AI-powered search feature
• Integration of Fault Finder into the main app
• Using the app for training technicians
• Importance of proper compressor diagnostics
• Accessing technical documentation and AE (Application Engineering) bulletins
• New camera feature for scanning compressor data tags
• Desktop version functionality for service managers
• White Rogers mobile applications
• Warranty tracking and parts availability features

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

Subscribe to our podcast on your iPhone or Android.

Subscribe to our YouTube channel.

Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android