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PODCAST

The Building Science Podcast

Positive Energy

The Building Science Podcast is a show hosted by MEP engineering firm Positive Energy principal Kristof Irwin. The show covers everything from the basics of building science to adjacent scientific disciplines to more fully understand how the built environment shapes our lives as human beings on planet earth.

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All Episodes

00:59:49

The Insulation Decision

The Building Science Podcast ·

2019/11/09

While insulation and airtightness are critical elements of a high performance building, they also can significantly increase the risk of health and moisture failure issues. In addition, if using high "embodied carbon" impact materials then high performance buildings can have a higher net carbon impact by 2050 than conventional buildings. Come join us to learn how to create truly healthy, durable, comfortable, and low carbon impact buildings. Join Kristof as he interviews Lucas Johnson in a

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00:49:57

The V In HVAC - Part 2

The Building Science Podcast ·

2019/10/05

As houses get tighter, we know they need to be ventilated (hopefully). But many in the building industry don’t understand ventilation well. We know about the less than ideal ways to do it, like raw fresh air intakes. We’ve heard of ERVs. And it seems like everyone thinks they want them, but nobody understands them or cares enough to actually bring them into a project. Well wonder no more friends. This episode is a two part series and a deep dive into the V in HVAC - demystifying the ventilation

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01:01:44

The V In HVAC - Part 1

The Building Science Podcast ·

2019/07/19

As houses get tighter, we know they need to be ventilated (hopefully). But many in the building industry don’t understand ventilation well. We know about the less than ideal ways to do it, like raw fresh air intakes. We’ve heard of ERVs. And it seems like everyone thinks they want them, but nobody understands them or cares enough to actually bring them into a project. Well wonder no more friends. This episode is a two part series and a deep dive into the V in HVAC - demystifying the ventilation

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01:20:48

That's How The Light Gets In

The Building Science Podcast ·

2019/06/14

Architecture that interacts skillfully w/ the sun is needed now more than ever. Beyond just light and heat there are broader implications and deeper relationships between the building skin and aperture that are not always transparent during the design process. It's time to develop a sympathetic understanding of interrelated decision factors. Enter Matt and Dason and their new book that seeks to fill a void in the understanding and practice of designing around the Sun. This is an architects resource

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00:58:27

Fix-A-Flat For Houses?

The Building Science Podcast ·

2019/05/07

Join Kristof as he interviews Amit Gupta, CEO of AeroBarrier and Aeroseal Technologies. The discussion dives into the particulars of a unique and fascinating technology company at the helm of the architectural and construction industry change.

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00:53:06

Don't Just Build A House. Build A Legacy.

The Building Science Podcast ·

2019/04/05

David Escobedo is a fascinating character with a deep connection to his own heritage in the construction industry. Join Kristof as he interviews David for a conversation that outlines not just the path of a builder, but the path of someone who wants to leave behind a legacy.______________________David Escobedo is the active founder of Escobedo Group where he leads a six-division, vertically-integrated luxury home building company that self-performs their work.Escobedo’s focus on solid construction

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00:55:32

Just Don't Tell Them It's Passive House!

The Building Science Podcast ·

2019/03/22

If you’re ever wondered what kind of salt it takes to move the needle for multi-family passive house projects, look no further than the story of architect and developer Hank Keating. We all have under utilized power in our professional roles. Join Kristof for a discussion with Hank about the work he’s done in Massachusetts to make way for passive house buildings - from codes, to renter occupants, to design - this episode’s got it all.__________________________Hank Keating, AIAMr Keating is a

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00:53:06

End Game Refrigerants

The Building Science Podcast ·

2019/03/08

Refrigerants are all around us and we barely ever notice. They are a hidden force in creating the comforts we have grown to think of as normal and yet many of us know little about them. Rethinking refrigerants is considered by many experts to be the #1 way to to combat and draw down climate change given how much carbon they can add to the atmosphere when not created and handled correctly. This episode features John Miles of Sanden Water Heaters in a ranging discussion of the effects and behaviors of

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01:01:48

You Don't Know What You Don't Know, You Know?

The Building Science Podcast ·

2019/02/15

The state of our current housing industry’s understanding and treatment of HVAC systems in in quiet crisis. Systems are routinely installed incorrectly to the detriment of the environment both on a macro scale and on the micro scale of the air quality inside people’s homes. In this episode, Kristof interviews Sean and Ian Harris, the owners of IAQ Texas. You'll hear discussion on why quality duct installation is crucial for good indoor air quality outcomes.Also, we talk about Aerobarrier. It’s a

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01:09:15

Texas Goes Passive

The Building Science Podcast ·

2019/01/31

Is Dallas, Texas ready for the state’s first internationally certified Passive House? Kyle and Connor Fagin think so and they’re betting on it. Join Kristof as the Fagin Partners tell us their unique story of operating in the developer driven construction world to sacrificing profit for the principled push forward in industry transformation.Kyle FaginThe first home Kyle ever built was a tree house for his three awesome kids. Sometime after that he began a major remodel on a mid-century home for his

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There's What In This Building?!

The Building Science Podcast ·

2019/01/14

Modern building materials are generally feats of engineering marvel - we’ve managed to manufacture countless high performing systems, yet it has often been at the cost of human exposure to harmful chemicals. But it’s not a hopeless situation. There are people who are helping the average consumer understand what’s what. Join Kristof in a wide ranging conversation with Gina Ciganik and William Weber from the Healthy Building Network.Gina CiganikChief Executive OfficerGina has been growing and scaling

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01:27:37

Breathe Like You Mean It

The Building Science Podcast ·

2018/12/21

Live from The HIVE Conference held in Austin, TX in 2018, we’re proud to bring you one of the brightest minds in the discipline of indoor air quality research, Dr. Brett Singer from Lawrence Berkley National Labs. Join Kristof as he discusses a broad array of topics that affect every single person who breathes inside a house (so, ya know, most people). It’s our last episode of 2018 and season 4 so we made sure it’s extra long (almost an hour and a half!). Enjoy it and we’ll see you next

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00:11:33

Season 5 Preview

The Building Science Podcast ·

2018/12/17

We just wrapped an unthinkable season 4 of The Building Science Podcast. We hope you'll join us for season 5 in 2019. Hear more about what we'll be discussing.

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01:02:18

Do You Have 2030 Commitment Issues?

The Building Science Podcast ·

2018/12/07

To support the 2030 Challenge, the American Institute of Architects created the 2030 Commitment Program, aimed at transforming the practice of architecture to respond to the climate crisis in a way that is holistic, firm-wide, project-based, and data-driven. Over 400 A/E/P firms have adopted the 2030 Commitment, and firms from all over the country have been tracking and reporting projects since 2010, with over 2.7 billion ft2 of project work reported in 2016 alone. Join Kristof as he interviews

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01:04:40

3 Hot Topics Served Crunchy

The Building Science Podcast ·

2018/11/16

What do heat pump water heaters, ERVs, and low static VRF systems have in common? You’re picturing them and we’re talking about them! Join Kristof in a wide-ranging discussion of building science topics with consultant John Semmelhack of Think Little.John Semmelhack is the owner of Think Little. He is a Certified Passive House Consultant, a member of the Passive House Institute U.S. (PHIUS) Technical Committee, and is a PHIUS Trainer for the Certified Passive House Consultant and PHIUS+ Rater

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00:51:28

What Do Spec Homes Dream Of?

The Building Science Podcast ·

2018/10/26

If your house could go down a highway at 70MPH, would you trust your architect and builder to make sure it’s not going to fall apart?Let’s face it - most people can’t build custom homes just like most people can’t afford a Lamborghini. It’s just not a financial reality for so many of us. But that doesn’t mean that we don’t want a car that doesn’t work well and it doesn’t mean we don’t want a high quality home to live in. It sure as hell doesn’t mean we don’t want a healthy environment for ourselves

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00:55:26

Excuse Me, Your Building Is Leaking

The Building Science Podcast ·

2018/10/05

Healthy, efficient buildings shouldn't leak. Leaky buildings are unfortunately a staple of our industry norm. As you know, making change in the construction industry is like turning a super tanker. It doesn’t happen quickly, but super tankers do turn. They use a trim tab to enable the large rudder to turn the shift. What is needed now is a fresh take on the societal forces resisting change in construction practices and energy code. We need a trim tab to start the process of countering these stuck

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00:42:26

What The Heck Is HOMEChem?

The Building Science Podcast ·

2018/09/20

This week’s episode features an interview with Corbett Lunsford on the HOMEChem experiments that were being conducted alongside the filming of a brand new, building science focused show called Home Diagnosis TV (be on the lookout for that). Of course, we're really excited about the potential of Indoor Air Quality education coming to the masses. It's the future fulcrum point of housing and health care. The HOMEChem experiment (House Observations of Microbial and Environmental Chemistry) took place in

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01:08:59

5 Principles Of A Healthy Home

The Building Science Podcast ·

2018/08/31

Health is the new green - this message is seemingly everywhere these days. It's clear that a shift is underway in the way we think about our homes and buildings. A quality building does more than just use energy efficiently, it needs to provide for the occupants. This means recognizing that our clients will spend their time immersed in the air we create for them and that indoor air is a dominant exposure. Now is the time to get clear onhow our homes and buildings relate to health, comfort and

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01:04:47

The Building Science Podcast Presents: The Edifice...

The Building Science Podcast ·

2018/08/17

We got so much great feedback from listeners who loved the last crossover episode. So much so that we figured why not do it again? This week we're proud to present to you one of our favorite building-centric shows, The Edifice Complex. Hosted by our colleague Robert Bean (who has been on our show before) and our new friend Adam Muggleton, we're thrilled to bring you an episode of their show in which they interviewed our beloved Building Science Podcast host, Kristof.In this episode, topics discussed

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