Passive House: Principles, Performance and Practical Application

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1. 

   S1 · E13 · 10 Mar 2026 · 44 min

   Ventilation Explained: Heat Recovery Systems & Airtight Homes

   This is Part 2 of Dean’s conversation with Tom Stephenson from Stiebel Eltron. If you haven’t listened to Part 1, start there first. In this episode the conversation moves beyond heat pumps to the broader systems that make high-performance homes work — ventilation, airtightness, building fabric and energy management. Tom walks through the design of his own all-electric home, explaining how geothermal heating, ventilation with heat recovery, thermal storage and solar generation work together to reduce energy demand while improving comfort. The discussion also explores the practical realities…

2. 

   S1 · E12 · 3 Mar 2026 · 49 min

   Heat Pumps Explained: Efficient Hot Water, Heating & the All-Electric Home (Part 1)

   Dean sits down with Tom Stephenson from Stiebel Eltron to unpack heat pump technology and the role it plays in electrifying modern homes. Tom explains how heat pumps work, why they’re significantly more efficient than gas systems, and how pairing them with solar PV changes the way homes consume and store energy. They explore why improving building fabric should come before adding mechanical systems, and how architects, builders and developers are starting to rethink energy systems in residential construction. The conversation explores: How heat pumps work What Coefficient of Performance…

3. 

   S1 · E11 · 23 Feb 2026 · 1 hr 15 min

   Embodied Carbon & Timber: The Case for Plantation Forestry

   Dean sits down with Daniel Gudsell from Abodo to unpack timber, forestry and embodied carbon, and how material choices shape the long term impact of what we build. Daniel shares the origin story of Abodo, from exporting timber into the Pacific Islands to developing thermally modified radiata pine as an alternative to old growth hardwoods. Daniel also breaks down how fast growing plantation timber can store carbon more rapidly than slow growing species, and why the discussion needs to move beyond single issue sustainability This episode is all about understanding forestry, carbon accounting,…

4. 

   S1 · E10 · 16 Feb 2026 · 1 hr 6 min

   Cross Laminated Timber Explained: Carbon, Cost & Construction

   Dean sits down with Sean Bull from Xlam to unpack cross laminated timber (CLT) — how it’s made, how it performs, and whether it can play a meaningful role in reducing embodied carbon across Australian construction. Sean shares his journey from structural engineering and post-tension concrete into the mass timber space, and explains how CLT panels are manufactured, pressed and machined in Australia using radiata pine sourced from PEFC-certified forests. The conversation explores: What CLT actually is and how it’s manufactured Fire resistance levels (FRLs) and performance pathways Acoustic…

5. 

   S1 · E9 · 9 Feb 2026 · 1 hr 47 min

   Mould, Moisture Control & Airtightness in Modern Construction

   Dean sits down with former builder and Passive House tradesman now working with Pro Clima, Stewart Scholten from Scholton Group, to talk about membranes, moisture management, airtightness and the shift happening in Australian construction. Stu shares his journey from carpentry apprenticeship through high-end residential construction, working with Bellavarde, delivering the first certified Passive House in the Northern Rivers, and transitioning into building science and product education. This episode is about understanding how better detailing, better science and better collaboration can…

6. 

   S1 · E7 · 15 Dec 2025 · 1 hr 3 min

   The Home Warranty Mess: Caps, Claims & Confusion

   In Part Two of this massive conversation, Dean Bowen returns to unpack the most confusing, frustrating and misunderstood part of the building industry: Home Warranty Insurance in New South Wales.. why it exists, how it works, and why the system is failing both builders and homeowners. They get brutally honest about the bureaucratic mismanagement behind the scheme, the insolvency crisis driving record claims, the unrealistic $340,000 cap, and the growing gap between what homeowners think they’re protected against and what the insurance actually covers. If you’re a builder trying to navigate…

7. 

   S1 · E6 · 8 Dec 2025 · 54 min

   The Truth About Builders Insurance: Costs, Claims & Cover You Actually Need

   Insurance is one of the biggest blind spots in the construction industry and often the most expensive. In this episode, Dean sits down with Dean Bowen, founder of DLB Insurance & Risk Solutions, to unpack what builders actually need to know about contract works, liability, claims, premiums, and the risks most policies never explain. From why premiums have skyrocketed, to the truth about subbie injuries, internal labour-hire structures, and the massive gaps caused by facility broking, this conversation is a rare behind-the-scenes look at how insurance really works in construction.. Whether…

8. 

   S1 · E5 · 1 Dec 2025 · 1 hr 22 min

   Electrification Explained: The 5 Key Pathways to Decarbonising Australian Homes with Saul Griffith

   Electrification seems to be the most practical, cost-effective pathway for Australian homes to cut emissions and save money. In this episode, Dean sits down with author, engineer and electrification advocate Saul Griffith to break down the real opportunities in front of us, and what we know is already working. They dig into the practical realities behind the headlines: Why rooftop solar is now so cheap in Australia and what that unlocks The five big household decisions that determine nearly all your emissions “Machine turnover”: how simply replacing things as they fail gets us most of the…

9. 

   S1 · E4 · 24 Nov 2025 · 1 hr 7 min

   Low Carbon Concrete & Building Biology

   We’re back with Zara D'cotta from The Healthy Home to continue our chat about designing and building healthier homes. This time, the conversation takes an unexpected turn, when Zara raises some concerns about low-carbon concrete. As a builder who’s used Holcim’s EcoPact mixes on site, he digs deeper to separate myth from material fact. After Zara’s segment, you’ll hear directly from Holcim in response to the claims, bringing real world data and onsite context to the discussion. In this episode: Picking up from Part 1: where health and sustainability intersect (and sometimes collide) Zara’s…

10. 

    S1 · E3 · 17 Nov 2025 · 57 min

    Building Healthier Homes: What the Industry’s Getting Wrong

    Concrete and carbon get all the airtime, but over the next two weeks, we zoom in on the indoor environment. In part one of this chat, Dean talks with building biologist Zara D'Cotta about the five pillars of a healthy home (air, light, water, low-EMF, low-tox), what NCC 2022 condensation changes really mean on site, and the simple design choices that stop you building a mould pit. We'll be back with part two, next week. We cover: Zara’s backstory: cancer, mystery symptoms, and finding building biology The 5 pillars of a healthy home NCC 2022 condensation management: why “minimums” won’t save…