eHaus Tamahere Waikato

   House Profile

Project Team

Architecture  eHaus - The architecture people - ehaus.co.nz

Passive House Design eHaus - Maria Rei - ehaus.co.nz
Builder eHaus Waikato -  ehaus.co.nz
Certifier Sustainable Engineering Ltd – sustainableengineering.co.nz

Passive House Metrics

  • Heating Demand24.3 kWh/m2/year
  • Heating Load14.9 W/m2 
  • TFA270.4m2
  • Form Factor3.8
  • Air leakage @ 50Pa0.4 ACH/hour
  • PER demand53.1kWh/m2/year

Passive House Database - TBA

Construction Details Average Values

  • U-value External Walls 0.22 W/(m2K)(R4.57)
  • 140mm timber framed wall with R4.1 Knauf wall batts, ply air control layer, 50mm service cavity with R1.5 Knauf batts.
  • U-value Floor0.24W/(m2K)(R4.09)
  • Concrete slab on grade with 150mm Expol Thermal Slab S
  • U-value Roof 0.13W/(m2K)(R7.64)
  • Truss roofs with one layer of R3.2 Knauf batts and a second layer of R5.2 Knauff batts, air control layer and uninsulated service cavity.
  • U-value Glass1.05 W/(m2K)(R0.95)
  • Low solar heat gain double glazing
  • U-Windows1.4 W/(m2K)(R0.7)
  • Dopfner Premium IV68 Wood/Aluminium window frames
  • Ventilation Efficiency 85%
  • Zehnder - ComfoAir Q450 HRV