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In this episode of The Flow Lab Podcast, hosts Ben Walker, Co-CEO of RetroTec, and Sam Myers, building science specialist and RetroTec trainer, sit down with Niek-Jan Bink, Director/co-owner at ACIN instrumenten and mastermind behind innovative tools like the Flow Finder Mk2+ and the ADT.

Niek shares his fascinating journey from climate research to engineering HVAC solutions, while uncovering the evolving needs of ventilation systems around the globe. This is a must-listen for HVAC pros, energy auditors, and building scientists curious about the tools shaping better indoor air quality and airtight construction.

• From a handmade aluminum box to a smart, Wi-Fi powered airflow measurement device.
• A new tool that simplifies testing on large-scale housing projects without replacing the blower door.
• Discover how ultrasonic tools are transforming on-site diagnostics, no construction delays required.
• Why do the U.S. and Europe approach airflow, ventilation, and ductwork so differently.
• What Niek learned from experts like Bill Spohn and Colin Genge, and why curiosity is key in HVAC.

[00:00] - How it works with or without the blower door

[01:13] - Meet Niek-Jan Bink and his work with ACIN Instrumenten in the Netherlands

[03:54] - From climate researcher to co-owner of a cutting-edge HVAC company

[06:30] - ACIN’s diverse innovations: from naval valves to plant research

[08:52] - The origin story of the Flow Finder and 1980s ventilation failures

[12:40] - Flow Finder Mk2+ development & challenges

[18:00] - Ultrasonic leak detection tools: what's coming next

[21:37] - Using Flow Finder and ultra graphics in prefab & commercial projects

[28:32] - Breaking down the ADT’s functionality, limitations, and value

[35:56] - Practical ADT case study in a Dutch apartment complex

[44:11] - Achieving ISO 17025 accreditation & improving calibration uncertainty

[47:22] - Flow Finder Mk2+ updates: new motor controller, better efficiency

[52:56] - Extending the flow capacity up to 700 CFM

[55:00] - Future software for hood-specific calibration

[58:44] - U.S. use cases: whole-house ventilation, duct testing, and balancing

[01:03:00] - Advice for young HVAC professionals: stay curious, listen, collaborate

LinkedIn: https://www.linkedin.com/in/niek-jan-bink-18b6203/

Instagram: https://www.instagram.com/niekjanbink?igsh=MXIyNGFudGVzNWwwNw==

Facebook: https://www.facebook.com/share/1BDDSRAX8W/

Website: https://acin.nl/en/

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In this episode of The Flow Lab, hosts Ben Walker, Co-CEO of RetroTec, and Sam Myers, building science specialist and RetroTec trainer, are joined by Amit Gupta, the CEO of Aeroseal. Together, they explain the innovative world of air sealing technology, focusing on ductwork and building envelope sealing. The conversation examines into the challenges and breakthroughs in building performance, energy efficiency, and the future of sealing technologies, offering valuable knowledge for professionals in the HVAC and building science sectors.

• The evolution of Aeroseal’s technology from duct sealing to building envelope solutions.
• How the Aeroseal technology works, including its ability to fill air leaks in ducts and buildings.
• Insights into the challenges faced by builders and HVAC professionals in sealing air leaks.
• The environmental and financial benefits of improving air tightness in buildings.
• The potential of the Aeroseal technology to become standard practice in HVAC installations and home construction.

[00:00] - Amit’s Journey to Aeroseal

[00:59] - Introduction

[04:03] - The Technology Behind Aeroseal

[05:15] - How Aeroseal Works

[07:22] - Expanding into Building Envelopes

[10:41] - Challenges in Sealing and Pressure Dynamics

[12:58] - Sealing Commercial Ductwork

[16:01] - Sealing Process for Residential Systems

[19:28] - Tax Incentives for Homeowners

[26:00] - Growth of Aeroseal Worldwide

[21:07] - Advice for Entrepreneurs

[33:00] - Future of Building Technology

Connect with the Guest:

LinkedIn:https://www.linkedin.com/in/amit-gupta-36abb0/

Website: https://aeroseal.com/

Aeroseal Social media:

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

Twitter: https://x.com/Aeroseal_llc

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

LinkedIn: https://www.linkedin.com/company/aeroseal-llc/

Follow Hosts:

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:

In this episode of The Flow Lab Podcast, hosts Ben Walker and Sam Myers continue their conversation with Brendan Reid, a pioneer in home performance and HVAC sales. Brendan shares expert knowledge into ductwork efficiency, sales strategies, and the science of customer communication. He explains why smaller HVAC systems often perform better, the role of air sealing, and how to educate homeowners without overwhelming them with technical jargon. Whether you’re an HVAC professional or a building science enthusiast, this episode is packed with valuable takeaways to elevate your skills.

• The Power of Proper Duct Sealing, Why fixing duct leakage before upgrading HVAC systems leads to better efficiency and comfort.
• How to Communicate HVAC Benefits to Homeowners Using relatable analogies to explain airflow, ductwork, and energy efficiency.
• Mastering the Sales Process, Why sales objections should be seen as opportunities and how to use psychology to guide customer decisions.
• Behavioral Science in Sales, How asking the right questions keeps customers engaged and makes technical concepts easier to understand.
• The Future of HVAC Training Brendan’s insights into modern home performance solutions and upcoming sales education initiatives.

[01:14] - Welcome Back to The Flow Lab Podcast

[03:45] - The Importance of Clean Air and Ductwork Efficiency

[06:12] - Using Analogies to Simplify HVAC Concepts

[08:16] - The Psychology of Sales in HVAC

[14:21] - Overcoming Sales Objections in Home Performance

[20:30] - The Evolution of HVAC Testing & Airflow Science

[26:15] - Moving Beyond “Energy Audits” to Customer Comfort

[30:00] - The Power of Customer Education in HVAC Sales

[35:50] - Final Advice for HVAC Professionals

Connect with Brendan Reid:

LinkedIn: https://www.linkedin.com/in/brendan-reid-5255bbb/

Website Aeroseal: https://aeroseal.com/

Website SellMoreSeals: https://sellmoreseals.com/

Follow Hosts:

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: