Passivhaus (passive house) buildings maintain comfortable indoor temperatures all year round with extremely low energy demands. This is achieved by careful design, robust detailing of the building fabric and services, and effective quality control of the construction process in passivhaus. Certification is essentially the formal assessment and approval of the quality of the project.
Essentially Passivhaus (passive house) certification is a quality control process that ensures that the building will perform as designed. It is advisable that a building certifier or experienced CEPH designer/consultant has early input into the design pre-planning stage. They will be able to advise on the insulation and glazing choices in relation to the orientation and massing of the design. The other crucial stage is a pre-construction check. The confidence can be given that the design will meet the Passivhaus (passive house) target, ideally before work on site starts.
Excerpt from “How to build a Passivhaus: Rules of thumb”, chapter by Kym Mead, Passivhaus Trust, April 2015.