 | Certified Passive House:Projects that are marked as "Quality Approved Passive House" were certified by the Passivhaus Institut (PHI) or through a person authorized by the PHI. The Passive House criteria as specified by the PHI are fulfilled. For more information see Passive House Criteria in the database or visit www.passiv.de or www.passivhaus-info.de. |
| Certified Component:The Passivhaus Institut defines criteria and methods of testing for components being of vital importance in the Passive House. The certificate "Component Suitable for Passive Houses", e.g. for windows, glazing, entry doors, ventilation systems, construction systems, is only assigned by the PHI. On www.passiv.de, the homepage of the PHI, you can find more information about Passive House criteria for components suitable for Passive Houses and their certification. |
 | IG Passivhaus Deutschland:Members of the Information-Gemeinschaft Passivhaus Deutschland (Information-Community Passive House Germany) regularly receive current information regarding energy efficiency. For more information regarding the IG Passivhaus Deutschland – the network for information, quality and training please visit www.ig-passivhaus.de. |
 | Passive House Day:Projects marked with this logo could be attended during the Passive House Day of the respective year. For more information please visit www.ig-passivhaus.de. |
