Description

Passive House is one of the most misunderstood concepts in residential construction... often dismissed as “too expensive,” “too European,” or “not suited to Australian climates.” In this episode, Dean sits down with Daniel Kress, founder of Smart Plus Academy, to talk about what Passive House is, how it works, and why builders need to understand it.

Drawing on decades of experience across Germany, Ireland, Canada and Australia, Daniel explains the building physics behind comfort, airtightness, moisture control and energy use, and why most Australian homes still get these fundamentals wrong. The conversation also explores cost myths, window performance, the limits of NatHERS, and how better design-build integration can dramatically reduce construction risk.

It’s a practical, builder-level conversation about performance, process, and why understanding Passive House principles can make you a better builder.

In this episode:

1. Daniel’s journey from German carpentry and prefab construction to Passive House education
2. Why Passive House works in all climates, including Australia
3. The science of comfort: temperature, humidity, CO₂ and health outcomes
4. Airtightness explained
5. The difference between Passive House, Passive House principles, and greenwashing
6. Why certification exists
7. Common misconceptions around cost
8. Real numbers: additional cost per m² and where it’s actually absorbed
9. Windows, condensation and why double glazing alone isn’t enough
10. UPVC vs aluminium vs timber
11. Why NatHERS misses critical performance issues in real buildings
12. How builders can take control earlier through site selection and design input
13. Where AI is already reshaping design, costing and performance modelling
14. Why Passive House forces better communication between designers and builders
15. The long-term financial, health and comfort benefits of getting it right

Links & Resources:

1. Smart Plus Academy https://smartplusacademy.com
2. Passive House Institute https://passiv.de
3. Australian Passive House Association https://passivehouseaustralia.org
4. Pro Clima – Building envelope systems https://proclima.com
5. NatHERS energy rating scheme https://www.nathers.gov.au/

Hosted by Dean Ipaviz, builder & director at Verdecon, creating high-performance, low-impact homes across Australia. Follow Dean Ipaviz and @_thebuiltenvironment on Instagram and visit thebuiltenvironment.com.au