162: Introducing the LUNOS, a through-the-wall heat recovery ventilation system

When I first saw the LUNOS, I was skeptical. How could this be a ventilation solution with true heat recovery, when it’s so small? I particularly weary of systems claiming to be ‘heat recovery ventilation’, because so much of what’s typically sold and installed as such in New Zealand, simply is not. Worse than that, Read More …

141: Are Passive House and Green Building Relevant in a Temperate Climate?

I love Rich Williams’ enthusiasm for what he does. Even if you don’t live in the temperate climate of San Diego, you can learn a lot about the relevance of concepts like Passive House for a better performing home. Alliance Green Builders are dedicated to ‘building tomorrow’s homes for today’. As well as being Passive Read More …

138 Dr. Allison Bailes Energy Vanguard

Dr Allison Bailes III uses his PhD in physics and his background in teaching, to educate the world about better buildings. Through his company Energy Vanguard, Dr Bailes has been recognised as a great communicator, turning complex ideas like relative humidity and psychrometrics, into understandable fundamentals for better home performance. The Phsyics of Good Buildings Read More …

115: What’s the Difference between HRV and ERV?

What’s the difference between HRV and ERV? Grant Anderson is the National MVHR Manager at Fantech. (What’s MVHR? Listen in to find out!) More detailed shownotes to come. For now, please feel free to contact me if you’d any help with choosing a ventilation system. You can also find Grant and his team at Fantech. Read More …

105: What is a Blower Door?

What is a blower door and why would you want to use one? Thomas van Raamsdonk is a home performance expert. He’s also an expert educator and can often be found touring New Zealand and Australia talking with design professionals, builders and clients about the virtues and techniques of better building. During his career of Read More …

101: Vernacular Construction

Episode Foundations (the bottom line at the top) Invest up front in a good designer and you’ll save during construction. Vernacular construction is about designing and building appropriately for the local conditions. For a sustainable home, focus on insulation and ventilation.

How 475 can help you achieve a high performance home

So, you’ve decided you’d like a really good home. One that’s comfortable, healthy and energy efficient. That’s great, but unfortunately it’s not (yet) standard practice. Hopefully you can find a good designer to help (try this list if you like). But you’ll also need some good, non-standard products. This week I spoke with Ken Levenson Read More …

Q & A

Something a little different this week. I’ve had some excellent questions sitting in my inbox for a while and I thought that many could benefit from them. Here’s just a sample. Got similar questions? Please get in touch and if I can’t help, we’ll put the word out to find someone who can. Got a Read More …