In this episode of The Flow Lab, hosts Ben Walker and Sam Myers sit down with Colin Genge, founder of RetroTec and a pioneer in building science and HVAC innovation. They take a look at the origins of blower doors, the evolution of air tightness testing, and the future of energy conservation.

Collin shares fascinating observations of the early days of RetroTech, the challenges of breaking into the market, and how the industry has changed over the years. He also investigates renewable energy, AI, and the future of building performance.

This episode is packed with wisdom for HVAC professionals, building scientists, and anyone interested in energy efficiency and technological advancements.

Collin Genge is a pioneer in building science, best known for founding RetroTech, a leader in air tightness and HVAC testing equipment. With decades of experience, Collin has played a crucial role in shaping energy efficiency standards worldwide. Now retired and living in New Zealand, he continues to analyze renewable energy and disruptive technology.

• The garage startup story of RetroTech and the origins of blower doors.
• How energy conservation and air tightness testing have evolved since the 1980s.
• The impact of government programs and regulations on building performance.
• Why renewable energy and AI are shaping the future of the industry.
• Lessons from decades in business, including the challenges of entrepreneurship.

[00:42] – Introduction [02:04] – How the industry began [02:36] – Collin’s experience with media and industry recognition

[03:22] – Collin’s Life After Retirement ...

Welcome to the very first and special episode of The Flow Lab, where hosts Ben Walker and Sam Myers sit down with Harold Orr, a pioneering figure in building science and energy efficiency. Harold shares the fascinating story behind the invention of the blower door, the groundbreaking Saskatchewan Conservation House, and how these innovations shaped modern air-tightness standards.

With decades of experience, Harold explains the evolution of air leakage testing, the challenges of energy-efficient construction, and the importance of sealing techniques for sustainable buildings. This episode is packed with historical insights and practical knowledge for anyone interested in building science, HVAC, and home energy efficiency.

• How Harold Orr pioneered the development of the blower door and air-tightness testing
• The origins of the Saskatchewan Conservation House and its impact on the Passive House movement
• The evolution of building insulation and air barriers for energy-efficient construction
• Common misconceptions about air-tightness and the myth that "houses need to breathe"
• The "chainsaw retrofit" method for improving insulation in older homes

[00:01:51] – Welcome to The Flow Lab

[00:02:07] – The purpose of The Flow Lab

[00:02:50] – Introduction to Harold Orr

[00:04:40] – How Harold started working in air-tightness and building efficiency

[00:16:30] – The birth of the blower door

[00:22:18] – The Saskatchewan Conservation House

[00:25:34] – How the Passive House movement was influenced by Harold’s work

[00:33:57] – Vapor barriers, air sealing, and insulation techniques for modern construction

[00:38:40] – The "Chainsaw Retrofit" method

[00:46:35] – Do houses really need to "breathe"?

[00:50:17] – Why air-tightness should be a building code requirement

[00:55:37] – Harold’s lasting impact on building science

LinkedIn: https://www.linkedin.com/in/harold-orr-6858a3/

Ben Walker (Co-CEO, Retrotec) LinkedIn: https://www.linkedin.com/in/ben-walker-4a05901/

Sam Myers (Building Science Specialist & Trainer) LinkedIn: https://www.linkedin.com/in/sam-myers-ms-a9a4a546/

Website: https://retrotec.com/

Facebook: https://www.facebook.com/retrotec/

Instagram: https://www.instagram.com/retrotec/

YouTube: https://www.youtube.com/@RetrotecEnergy/

Join the conversation! Share your thoughts, experiences, and questions about air-tightness and energy-efficient construction in the comments or on social media.

Welcome to The Flow Lab Podcast by Retrotec!

This is a project that Ben and Sam have been working on for a while. The goal is to provide education and news on technology advancements in the industry through a new platform.

In each episode, we interview industry leaders and innovators whether they have been in the industry for a while or are up-and-coming pros.

Our first episode drops next week with special guest Harold Orr: Inventor of the blower door.