Liam Wallis, is the founder of HIP V HYPE, a design agency in Melbourne that helped design, fund and build the first Nightingale project apartments in Melbourne’s Brunswick. These apartments are designed from the start to be carbon neutral, healthier, and cheaper places to heat. He talks to Bernard Hickey about the number of times the air changes every hour in a normal house (20), and how often the air changes in a home like the ones built in the Nightingale projects. Liam is in Auckland, Christchurch and Wellington this week delivering the annual Sir Ian Athfield Memorial Lecture for the New Zealand Institute of Architects in Auckland.

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