Passivhaus certification criteria

What are the criteria for obtaining Passivhaus certification for a building?

Passive buildings maintain a comfortable indoor temperature throughout the year with a very low energy demand. This implies very careful design and execution.

• Heating demand: <15kWh/m2a
• Cooling demand: <15kWh/m2a
• Primary energy demand: <120kWh/m2a (heating, hot water and electricity)
• Tightness: <0.6 air renewals per hour (tightness value 50 Pa).