Episodes

March 28, 2025

EP211 Data Integrity in HVAC: Why It Matters More Than You Think with Rachel Kaiser (February 2025)

In this episode of Building HVAC Science, Bill and Eric welcome Rachel Kaiser to discuss an often-overlooked yet critical topic: data integrity in HVAC and building performance. Rachel, who has a background in scientific research and data quality,...
March 21, 2025

EP210 Building Better: Why HVAC and Construction Must Work Together with Sophie Ashley (February 2025)

In this episode of Building HVAC Science, hosts Bill Spohn and Eric Kaiser welcome Sophie Ashley of Energy Vanguard, an HVAC designer with a background in carpentry and building science. Sophie shares her journey from hands-on construction work to...
March 14, 2025

EP209 From Safety to Sustainability: Navigating the A2L Revolution with Keith Gifford (January 2025)

In this episode of the Building HVAC Science podcast, host Eric Kaiser is joined by Keith Gifford, Senior Global Product Manager at Penn Controls, for an in-depth discussion about the emerging use of A2L refrigerants in the HVACR industry. A2Ls are a...
March 7, 2025

EP208 Tools, Tech & Community: AHR Expo & HVAC Symposium Debrief with the Team from TruTech (February 2025)

In this episode of Building HVAC Science, Bill Spohn and Eric Kaiser, along with the TruTech Tools team, recap their experiences at the 6th Annual HVACR Training Symposium and AHR Expo in Orlando, Florida. They share insights from meeting industry...
Feb. 28, 2025

EP207 Craig Migliaccio on Bridging Theory and Practice in HVAC Education (January 2025)

In this episode of Building HVAC Science, Eric Kaiser and Bill Spohn welcome Craig Migliaccio, the creator of AC Service Tech, author, educator, and industry influencer. Craig shares his journey from teaching HVAC in high school to becoming a prolific...
Feb. 21, 2025

EP206 Mastering Indoor Air Quality: John Ellis’ 6 Key Principles with John Ellis (January 2025)

In this insightful episode of the Building HVAC Science Podcast, host Eric Kaiser takes a deep dive into the world of indoor air quality (IAQ) with guest expert John Ellis. With over four decades of experience in HVAC and building science, John shares...
Feb. 14, 2025

EP205 Building Integrity in the Trades: A Canadian Contractor’s Journey with Manly Arnason (January 2025)

In this heartfelt episode of the Building HVAC Science Podcast, Eric Kaiser and Bill Spohn welcome Manly Arnason, an HVAC business owner from Brandon, Manitoba, Canada. Manly shares his journey of transformation—from a challenging past to becoming a...
Feb. 7, 2025

EP204 Seitron Americas: Innovating HVAC Tools and Training with Jason Esteves and Dan Kelly (January 2025)

In this engaging episode of the Building HVAC Science Podcast, hosts Eric Kaiser and Bill Spohn welcome Jason Esteves and Dan Kelly from Seitron Americas. The discussion offers an in-depth look at Seitron’s evolution, its role in the HVAC industry,...
Jan. 31, 2025

EP203 Why Energy Isn't the Problem: Exploring Thermal Comfort and IEQ with Robert Bean (January 2025)

In this engaging episode of the Building HVAC Science Podcast, host Eric Kaiser is joined by Robert Bean, an ASHRAE Distinguished Lecturer and a renowned expert on indoor environmental quality (IEQ). Together, they explore the intricate relationship...
Jan. 24, 2025

EP202 Unlocking High-Performance HVAC: Insights with David Richardson (January 2025)

In this episode of the Building HVAC Science Podcast, Eric Kaiser welcomes David Richardson from the National Comfort Institute. David shares his journey from starting as a “gopher” for his father’s HVAC business to becoming a leading advocate...
Jan. 17, 2025

EP201 Evolving HVAC Strategies: Solving Problems for People, Not Just Homes (December 2024)

In this insightful episode of Building HVAC Science, co-hosts Bill Spohn and Eric Kaiser reconnect with Silas Hoeppner for a follow-up discussion that dives deeper into optimizing comfort and efficiency in existing homes. Silas shares his journey of...
Jan. 10, 2025

EP200: 200 Episodes Strong: Reflecting on the Building HVAC Science Journey with Bryan Orr (December 2024)

In this milestone episode, Bill Spohn and co-host Eric Kaiser welcome Bryan Orr, the instigat-ORR behind the creation of the Building HVAC Science podcast. They dive deep into the podcast's origin story, reflecting on how Bryan's love for audio and...
Jan. 3, 2025

EP199 Rebuilding Lives: The Mission of Second Chance University with Danny Huffman (December 2024)

In this powerful episode of the Building HVAC Science Podcast, hosts Bill Spohn and Eric Kaiser bring on a truly inspiring guest, Danny Huffman, founder of Second Chance University. Danny shares the transformative mission behind his organization,...
Dec. 27, 2024

EP198 Unlocking Building Potential: Ross Trethewey on Curiosity, Collaboration, and Innovation (December 2024)

In this episode of Building HVAC Science, Bill Spohn and Eric Kaiser are joined by Ross Trethewey, a mechanical engineer, consultant, and building science advocate who also appears on This Old House. Ross shares his journey from being a...
Dec. 20, 2024

EP197 Asbestos, Air Sealing, and ERVs: Navigating Home Renovations with Science (December 2024)

In this engaging Building HVAC Science Podcast episode, hosts Bill Spohn and Eric Kaiser welcome Dr. Allison Bailes, a renowned building science expert, to discuss his ongoing home remodeling journey. Allison shares his firsthand experiences of...
Dec. 13, 2024

EP196 Bill's review of 2024's podcasts (December 2024)

In this episode, Bill Spohn reviews the 52 episodes of the Building HVAC Science Podcast. published in 2024. EP# Published Topic Guest(s) 147 1-5-24 Building science hiaku with Shawna Henderson Shawna Henderson 148 ...
Dec. 6, 2024

EP195 Farming Ideas vs. Farming The Land: Reflections from Another Continent with Bill Spohn (November 2024)

In this episode of the Building HVAC Science Podcast, Eric dives into Bill's recent two-week trip to Africa, covering his time in Kenya and Tanzania. The discussion is rich with cultural insights, unique experiences, and lessons in building science....
Nov. 29, 2024

EP194 Behind the Scenes at TruTech Tools: Meet Greg Bokan (November 2024)

This episode of the Building HVAC Science podcast features Greg Bokan, Customer Service Manager at TruTech Tools. Greg shares insights from his recent experience (November 13, 2024) attending the IHACI (Institute of Heating and Air Conditioning...
Nov. 22, 2024

EP193 Building Performance with Purpose: Silas Hoeppner’s Journey (November 2024)

In this episode of the Building HVAC Science Podcast, hosts Bill Spohn and Eric Kaiser sit down with Silas Hoeppner, a passionate advocate for building performance and HVAC design, to explore his unconventional career journey in the industry. ...
Nov. 15, 2024

EP192 Building a Legacy: Energy Efficiency and Innovation with Mark Kaiser (October 2024)

In this episode of the Building HVAC Science podcast, co-hosts Bill Spohn and Eric Kaiser are joined by Eric's father, Mark Kaiser, for a special father-son discussion. Mark shares his experiences with building and improving a unique energy-efficient...
Nov. 8, 2024

EP191 From Building Automation to Smart Homes: The Lumen Cache Revolution with Derek Cowburn (October 2024)

In this episode of the Building HVAC Science podcast, Bill Spohn and Eric Kaiser welcome Derek Cowburn, founder of Lumen Cache, to discuss his journey from building automation in pharmaceutical facilities to pioneering smart DC power systems for homes...
Nov. 1, 2024

EP190 Breathing Easy: Tackling Outdoor Contaminants in Indoor Spaces (October 2024)

In this episode of the Building HVAC Science podcast, Eric Kaiser takes the lead in interviewing three guests from the ROCIS (Reducing Outdoor Contaminants in Indoor Spaces) initiative: Linda Wigington, Bill Collinge, and Rhett Major. Linda introduces...
Oct. 25, 2024

EP189 Breaking the Cycle: Huff's Journey to HVAC Excellence and Industry Change (September 2024)

In the Building HVAC Science Podcast episode, hosts Bill and Eric are joined by Thomas "Huff" Hoffmaster, II to discuss his experiences transitioning from a technician to tech support and eventually into training and consulting. Huff shares his...
Oct. 18, 2024

EP188 Young HVAC Prodigy: Elena Day’s Journey to EPA Certification at 12 (September 2024)

In this episode of the Building HVAC Science Podcast, co-hosts Eric Kaiser and Bill Spohn interview Elana Day and her father Jordan Day, creators of the YouTube channel Little Miss Fix It. At just 12 years old, Elana has achieved remarkable feats,...