"Blower Door Test" Build Show Build: Boston - Bonus Episode
Posted on: 2023-10-07
Insulation is done and Sam from Retrotec is here to help Steve get a first update on the Boston project's blower door score. Learn all about the process of running a blower door test and input from Steve on why you need these numbers on your projects.
Building The Future HVAC Workforce
Posted on: 2026-03-19
Ben Walker and Sam Myers sit down with Xavier Walter of the Building Performance Association to talk about the workforce gap, why HVAC contractors need building science partners, and where the
Indoor Air Quality Is More Than a Number
Posted on: 2026-02-25
Sam Myers and Ben Walker sit down with Joe Medosch to talk about why indoor air quality is personal, and why better HVAC diagnostics matter more than ever. They break down MeasureQuick, direct
What Actually Improves Your Homes Indoor Air Quality
Posted on: 2026-01-13
Most “Indoor Air Quality upgrades” are just gadgets in a box.
And a lot of them can make things worse.
HVAC and building science veteran John Ellis joins Sam Myers and Ben Walker to break down
Why Your House Is Humid (Even With New HVAC SYSTEM)
Posted on: 2025-12-24
Everyone blames the HVAC System. Most of the time, that’s wrong. Nikki Krueger breaks down why modern homes struggle with humidity, even with high-efficiency systems, and why dehumidification has
How student built homes hit 0.9 ACH50
Posted on: 2025-12-11
High school students are building real, high-performance homes… and hitting 0.9 ACH50. Matt Blomquist joins The Flow Lab to unpack how his class builds tighter houses than most pros, why blower-door
Rewiring the Trades Pipeline: Inside Grit’s Hands-On Youth HVAC Camps
Posted on: 2025-11-25
On this episode of Flow Lab, Ben Walker and Sam Myers sit down with Leilani Orr and Ty Branaman from the Grit Foundation to talk about a very practical way to grow the trades pipeline: youth camps
Blower Door 201: Exposing Air Leaks in Building Enclosures
Posted on: 2025-11-25
Sam Myers demonstrates how to uncover hidden air leaks using the Retrotec blower door paired with supportive diagnostic tools. You will see how fog machines reveal airflow patterns, how high
Solar & Heat Pumps: Get the Math Right (feat. Brent Davidson)
Posted on: 2025-11-07
Solar & heat pumps can be a dream team or a challenge when time‑of‑use rates and sloppy sizing collide. Brent Davidson joins Ben Walker and Sam Myers to share a contractor‑first playbook: fix
Technical Tuesdays - Episode 57: Static Pressure Measurements with the Multi Probe
Posted on: 2025-10-28
Learn how to measure static pressure in duct systems with the Retrotec Multi Probe. Easier access with less user
Blower Door 101
Posted on: 2025-07-21
This is a recorded webinar that answers the "what?, why?, and how?" of airtightness testing in building enclosures. Sam Myers spends an hour to talk about the basics of testing both new and existing
Your doors are killing your airflow.
Posted on: 2025-07-17
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Joseph Cheung and John Konstantakopoulos to explore a simple but overlooked fix that can dramatically improve home
It’s just a door-until it’s an airflow solution.
Posted on: 2025-07-15
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Joseph Cheung and John Konstantakopoulos to explore why most Aussie homes fail at airflow-and how a small fix like the Q
Solving small problems created a national mission.
Posted on: 2025-07-09
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Joseph Cheung and John Konstantakopoulos to explore how Australian homes lack ventilation systems-and what to do about it.
How Contractors Can Overcome Air Leakage Problems Without Codes Using DIY Tools – John K & Joseph
Posted on: 2025-07-09
The basics to help you understand homes as a system. Download our FREE ebook and start solving problems like a pro. 👉 https://bit.ly/flowlab-ebook
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In this episode
Comfort is not a luxury-it’s essential.
Posted on: 2025-07-03
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite Sean Maxwell, Scheme Manager at ATTMA Australia & New Zealand, to unpack the realities of life in homes built under “model
When the code’s optional, comfort suffers.
Posted on: 2025-07-01
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite Sean Maxwell, , Scheme Manager at ATTMA Australia & New Zealand, to explore the complexity of building code enforcement in the
The “we’re different” myth is dangerous.
Posted on: 2025-06-25
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite Sean Maxwell, Scheme Manager at ATTMA Australia & New Zealand, to explore the gap between Australia’s current home performance
How Australian Homes Leak Energy for Builders to Improve Airtightness & Ventilation - Sean Maxwell
Posted on: 2025-06-25
The basics to help you understand homes as a system. Download our FREE ebook and start solving problems like a pro. 👉 https://bit.ly/flowlab-ebook
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In this episode
Accurate blower door tests don’t come from shortcuts.
Posted on: 2025-06-19
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers sit down with Denali Jones, Technical Director at the Air Barrier Association of America (ABAA), to talk through some of the most common
You never know what you’ll get with an existing building.
Posted on: 2025-06-17
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers sit down with Denali Jones, Technical Director at the Air Barrier Association of America (ABAA), to dissect the reality of testing older
How Large Buildings Fail Air Tightness Tests for Contractors to Fix with ASTM E3158 – Denali Jones
Posted on: 2025-06-14
The basics to help you understand homes as a system. Download our FREE ebook and start solving problems like a pro. 👉 https://bit.ly/flowlab-ebook
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In this episode
Technical Tuesdays: Episode 56 - Infiltration Volume
Posted on: 2025-06-12
Attention HERS Raters! Here is you guide on what to include in the infiltration volume when performing a blower door test for a HERS Rating. Are encapsulated attics, basements, and crawl spaces
Stop blaming cost-start sealing better.
Posted on: 2025-06-11
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Denali Jones, technical Director at the Air Barrier Association of America (ABAA), to explore large building airtightness
Rising bills makes airtightness sexy.
Posted on: 2025-06-05
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Barry Cope to spotlight the strange psychology behind energy upgrades-from sun-soaked Texas to high-cost UK.
Sunny skies
Mild climates mask real problems.
Posted on: 2025-06-03
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers talk with Barry Cope, Managing Director of ATTMA, about why some countries test rigorously-and others barely bother.
France isn’t
Centralized data saves real lives.
Posted on: 2025-05-28
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Barry Cope, Managing Director of ATTMA, to explore the real-world power of centralized building data, the ripple effects of
How ATTMA Revolutionized Airtightness Testing for Building Experts Using Lodgment Systems Barry Cope
Posted on: 2025-05-28
The basics to help you understand homes as a system. Download our FREE ebook and start solving problems like a pro. 👉 https://bit.ly/flowlab-ebook
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In this episode
Trade work hurts more than muscles.
Posted on: 2025-05-22
In this episode of The Flow Lab, hosts Ben Walker and Sam Myers invite guest Kevin Hart, founder and CEO of HavenIAQ, to unpack the often ignored health costs in the trades.
Decades of exposure to
