how it works


  • Fresh air intake / underground cooling tubes – number, size and length vary with house design and climate
  • Damper
  • Perimeter insulation – location varies with design and climate
  • Insulated frame walls
  • Glazed openings
  • Fire damper
  • Insulated frame ceiling
  • Insulated frame roof
  • Dampered vents at peak of air envelrope
  • Flat plate solar collector for domestic water behind roof glass
  • Adjustable awning for sun / thermal control
  • Glazed opening
  • Insulated frame walls
  • Glazed openings
  • Insulated frame floor
  • Spaced decking to allow envelope air to circulate
  • Earth