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 50 Pa is to be determined. The Passive House standard requires an n50-value of 0.6 h-1 or lower.

The free guide below sets out all the requirements for the testing and measuring the airtightness in NZ to comply with AS/NZS ISO 9972:2015 and the Passive House standard. The guide answers all the commonly asked questions on this subject, however, if you have any further questions please ask in the comments below.

Download the free guide [PDF, 1.5 MB]

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