Passive House & the NZ Building Code

With the recent coverage of health and energy-related issues with NZ housing, we thought it was pertinent to make our Position Paper more readily available. This version has been updated to be current as of May 2018 and sets out the PHINZ position in the NZ housing landscape. Of course, the Passive House standard is Read more about Passive House & the NZ Building Code[…]

Christchurch Passive House Meet Up

It’s time for a catch-up and to see what’s going on on the Christchurch Passive House world. There has certainly been some activity recently, so come along and keep the momentum and enthusiasm up.

designPH 1.5 PRO updated for the Southern Hemisphere

Good news for all designPH users in New Zealand, designPH 1.5 has been released as a free update and it now automatically takes account of the orientation of Southern Hemisphere designs! (No need to flip the model.) For full information on the update visit Existing customers can update for free at after login. Read more about designPH 1.5 PRO updated for the Southern Hemisphere[…]

Measuring Airtightness in New Zealand Passive Houses

A blower door test to measure the airtightness in a New Zealand Passive House building needs to be performed in accordance with AS/NZS ISO 9972:2015. The only exception to this is the calculation of the internal reference volume outlined in section 6.1.1 of the standard. The air change rate (ach) at a pressure difference of Read more about Measuring Airtightness in New Zealand Passive Houses[…]


First for NZ: Certified Passive House Component made in NZ

Exciting news to start 2017: there is now a Passive House certified component being made in Aotearoa NZ for the first time! Congratulations to Thermadura for achieving certification for the NatureLine PASSIVE range of timber windows. In the international Passive House Component Database: Download the certificate PDF here. We expect to see the certification Read more about First for NZ: Certified Passive House Component made in NZ[…]

How to account for thermal bridges

R or U-values do not tell the whole story about transmission heat loss through the building envelope. In fact, the better you insulate your building, the more you need to pay attention to rat-runs to get the full benefit of the thermal separation. The following instructions are a refresher for people who did thermal bridge Read more about How to account for thermal bridges[…]

All models are wrong – but some are useful

The right tools are needed to do a proper energy modelling job. For Certified Passive Houses, using the Passive House Planning Package (PHPP) is mandatory. It is the only energy modelling tool in the world that has successfully been tested against real-world results on a large number of projects (see here for some examples). Thousands of Certified Passive Houses deliver results very close to the modelling expectations. Other modelling tools are clearly not performing that well, or have never been tested. […]

Taramea Passive House

The Housing Trifecta. Can we have homes that are affordable, healthy and resilient?

This important article by PHINZ member Glenn Murdoch was published today on the Pure Advantage website. Affordability, Health and Comfort, Climate Change Resilience Our homes are important to us. Be it owned or rented our home is where we live, love, laugh, play, share and rejoice. It’s where we raise our kids, have dinner with Read more about The Housing Trifecta. Can we have homes that are affordable, healthy and resilient?[…]

Passive House Certifier and Passive House Designer

NZ’s First Passive House Certifier Confirmed


Certifying a Passive House Building in New Zealand and the South Pacific just got easier with confirmation that New Zealand has our first Passive House Certifier.

Jason Quinn, of Whanganui, has just completed the requirements to become a Certifier at the International Passive House Conference in Darmstadt. […]