What is a passive house?
In New Zealand, a Passive House is built following the principles of the Passive House Institute (PHI) in Germany, which aims to create buildings that are highly energy-efficient and comfortable to live in. To meet the Passive House standard in New Zealand, a building must meet the following performance metrics:
- Maximum space heating and cooling demand of 15 kWh/m2 per year
- Maximum total primary energy demand of 120 kWh/m2 per year
- Maximum air leakage rate of 0.6 air changes per hour at 50 Pascals pressure
To achieve these performance metrics, our architectural designs for passive homes focus on airtight construction, high insulation levels and an efficient mechanical ventilation system for internalising fresh air while recovering heat from the outgoing air. The result is a comfortable, healthy, and energy-efficient home with significantly reduced heating and cooling costs compared to a conventional home.