Goetz Wunderbar Passive House Auckland

    House Profile

You can read more about the Goetz Family’s building journey on their website: www.wunderbar-passive-house.org.

Project Team

Certifier Sustainable Engineering Ltd – sustainableengineering.co.nz

Passive House Metrics

  • Heating Demand13.0 kWh/m2/year
  • Heating Load10.7 W/m2 
  • TFA163.1m2
  • Form Factor3.87
  • Air leakage @ 50Pa0.6 ACH/hour
  • PER demand54.7kWh/m2/year

Passive House Database - TBA

Construction Details Average Values

  • U-value External Walls0.31 W/(m2K)(R3.2)
  • Insulated concrete formwork to lower levels, timber framed walls to upper level.
  • U-value Floor0.18W/(m2K)(R5.5)
  • Concrete slab on grade with EPS insulation
  • U-value Roof 0.20W/(m2K)(R4.9)
  • Timber skillion roof with batts
  • U-value Glass0.52 W/(m2K)(R1.9)
  • PlaniTherm XN
  • U-Windows 1.2 W/(m2K)(R0.8)
  • Gealan S9000 uPVC windows
  • Ventilation Efficiency 79%
  • Stiebel Eltron  - LWZ 180