Passivhaus (Passive House) building – with Tim Ross

Here in Dunedin, many families struggle during the winter with cold damp houses. In the last few years thanks to central and local government initiatives we are improving our housing stock with subsidies and rates offsetting for insulation and clean heating installations. This is all to the good!

However overseas especially in Germany and Austria, there is a movement in housing design that takes warm energy efficient housing to a whole new level where houses are capable of maintaining warm stable indoor temperatures down into the minus figures with little extra heating required.

Its called Passivhaus. High energy performance standards are achieved using a combination of super insulation, passive solar design, draught proofing and heat recovery ventilation systems.

Here in NZ the Passivhaus concept is still fairly new and lately seems to be catching on. We have some Passivhaus buildings in New Zealand, and here in Dunedin there are now houses built that incorporate some of the features of Passivhaus.

For this programme, Tim Ross joined me in the studio to chat about Passivhaus design.

Tim has a passion for low energy housing. He is a Registered Architect and a Certified Passivhaus Designer. He leads an architectural practice called Architype Ltd. The practice has expertise in domestic renovations, new houses and community architecture as well as significant experience with institutional and commercial clients both in New Zealand and overseas. With Tim’s expertise in passivhaus design, his business is able to specialize in in low energy housing design.

To find out more about

To listen to the programme Passivhaus Design please click on

This programme was originally broadcast on  the 19th February 2015 with the help of Otago Access Radio 105.4FM. Eco Living in Action is hosted by Maureen Howard and is supported by the Dunedin City Council. To view other programmes go to

Tim joined me in the Otago Access Radio studio.

Tim joined me in the Otago Access Radio studio.


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