Design

Airtight building shell ≤ 0.6 ACH @ 50 pascal pressure, measured by blower-door test.

  • Annual heat requirement ≤ 15 kWh/m2/year
  • Primary Energy ≤ 120 kWh/m2/year

In addition, the following are recommendations, varying with climate:
  • Window u-value ≤ 0.8 Watt/m2/K
  • Ventilation system with heat recovery with ≥ 75% efficiency with low electric consumption @ 0.45 Wh/m3
  • Thermal Bridge Free Construction ≤ 0.01 W/mK