Hokowhitu Passivhaus Palmerston North

   House Profile

Read a Q&A about this project with its Passive House designer Elrond Burrell.

Project Team

Architecture E3Architects - archipro.co.nz/professional/e3-architects

Passive House Design VIA architecture Ltd - via-architecture.net
Builder Optimum Build - optimumbuild.co.nz

Window Joinery Optimal Windows Ltd - optimalwindows.co.nz
Certifier Sustainable Engineering Ltd – sustainableengineering.co.nz

Passive House Metrics

  • Heating Demand12.4 kWh/m2/year
  • Heating Load11.1 W/m2 
  • TFA106m2
  • Form Factor3.9
  • Air leakage @ 50Pa0.4 ACH/hour
  • PER demand45.8kWh/m2/year

Construction Details Average Values

  • U-value External Walls 0.27 W/(m2K)(R3.66)
  • 90mm framing with 50mm insulation in 50mm services cavity
  • U-value Floor0.15W/(m2K)(R6.76)
  • MAXslab 350
  • U-value Roof 0.12W/(m2K)(R8.22)
  • Truss roof with R5.2 + R2.8
  • U-value Glass0.54 W/(m2K)(R1.85)
  • Triple glazing
  • U-Windows1.0 W/(m2K)(R1.0)
  • Optimal 90mm timber
  • Ventilation Efficiency 86%
  • Wolf GmbH - CWL-2-225