HVAC School - For Techs, By Techs
10 Things I've Learned In the Last 10 Years
· Summarized
Key takeaways
- Understanding wire sizing versus breaker sizing is essential for complying with the National Electrical Code and navigating inspector requirements.
- Practical solutions for vent sweating and duct leakage include sealing boots and understanding attic moisture sources.
- Distinct types of coil corrosion, such as formicary and galvanic, require awareness and research to mitigate.
- Evaporator temperature behavior can be complex in high-latent markets, affecting humidity control.
- Control layers in ducts and walls significantly impact HVAC design and efficiency.
- Filtration is crucial for maintaining system performance and longevity; larger filters often yield better results.
- Work-life balance is about mutual sacrifices made within families, fostering joy and consistency in both personal and professional life.
Summary
Introduction to the Talk
The podcast features Bryan's session from the HVAC School Symposium, titled '10 Things I've Learned in the Last 10 Years.' The presentation emphasizes Bryan's journey in HVAC as he reflects on lessons learned throughout nearly a decade of interactions with the community and ongoing education.
Wire Sizing vs. Breaker Sizing
Bryan discusses the importance of understanding the relationship between wire sizing and circuit breaker sizing as per National Electrical Code (NEC). He highlights common misconceptions and shares insights on how this knowledge can better equip technicians to handle inspector challenges.
Vent Sweating and Duct Leakage Solutions
The presentation outlines practical solutions to common issues like vent sweating and duct leakage, educating technicians on identifying and fixing problems, such as sealing around ducts and finding and addressing sources of moisture.
Understanding Coil Corrosion
Bryan explains the difference between formicary and galvanic corrosion affecting HVAC coils. He stresses the need for field-driven research to better understand these issues, moving beyond manufacturer narratives.
Evaporator Temperature in High-Latent Markets
In this section, Bryan addresses the unexpected behavior of evaporator temperatures in regions with high latent heat loads, aiming to shed light on the nuances of HVAC operations related to humidity and temperature control.
Control Layers in Ducts and Walls
Bryan discusses the roles of different control layers—vapor barriers, air barriers, and thermal barriers—in ductwork and building science, emphasizing the significance of understanding these layers for effective HVAC design and installation.
Filtration Importance
He outlines the critical role that properly designed filtration plays in the efficiency and cleanliness of HVAC systems, advocating for larger, sealed filters over inadequate factory options.
Work-Life Balance and Personal Growth
Bryan concludes with reflections on work-life balance, sharing personal anecdotes regarding his journey as a father of ten and business owner. He emphasizes the importance of mutual sacrifice within families and community bonds, enhancing professional growth.
Sponsors
- Carrier · Carrier has been a long-term sponsor of the podcast. They've made it possible very early on for us to do what we do and they are the products that we sell day in and day out, everything from single-stage equipment all the way up to the green speed extreme, one of the most efficient products on the market today.
- Esco Institute · With over 200 HVACR training solutions, courses, webinars, and simulators.
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Show notes
This 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 sparring with inspectors over code-compliant innovations. On vent sweating and duct leakage, he provides actionable fixes—like sealing boots and tackling attic moisture—while urging techs to look beyond bandaids. Bryan also dives into coil corrosion, distinguishing formicary from galvanic causes and advocating for field-driven research over manufacturer spin. His interactive style shines as he pauses for audience questions, fostering a dynamic exchange where attendees refine his insights.
The talk balances technical depth with human wisdom, spotlighting patience, joy, and consistency as cornerstones of his journey. Bryan recounts Eureka moments—like unraveling why high-latent markets defy evaporator temperature expectations—and credits mentors like Jim Bergmann and peers like Jordan Cummings for sharpening his perspective. He wraps up with a personal touch, addressing work-life balance as a father of 10 and business owner, advocating for mutual sacrifice with family over unilateral trade-offs.
Topics Covered:- Wire Sizing vs. Breaker Sizing: Debunks NEC myths and shares strategies for navigating inspector challenges.
- Vent Sweating Solutions: Offers practical fixes like sealing boots and managing attic moisture sources.
- Evaporator Temperature in High-Latent Markets: Explains unexpected suction pressure behavior with lower airflow.
- Control Layers in Ducts and Walls: Clarifies roles of vapor, air, and thermal barriers in system design.
- Formicary vs. Galvanic Corrosion: Differentiates coil leak causes, highlighting VOCs and flux issues.
- Low-Level CO Monitoring: Stresses its importance for safety in homes with combustion appliances.
- Duct Leakage: Links leaks to moisture and pressure woes, with visual diagnostic tips.
- Filtration Importance: Pushes for larger, sealed filters over inadequate factory setups.
- Compression Ratio and Dehumidification: Explores why ductless/inverter systems falter at moisture removal.
- Personal Growth and Joy: Ties patience, consistency, and community to a rewarding career.
- Work-Life Balance: Shares lessons on balancing family and work through shared sacrifice.
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