Certification Support

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PHIUS is here to support project teams during certification every step of the way. Click the links below, visit our FAQs page, or email us at the specific email addresses below. 


Project Certification

Email PHIUS at certification@passivehouse.us for queries such as:

  • How to request and submit a PHIUS+ Contract

  • How to request a custom certification quote

  • How to request a Feasibility Study

  • Learn more about the Quick Review Service

  • Learn more about the PHIUS Certified Window Program

  • Questions on energy modeling support and protocol

  • General questions on project certification


Quality Assurance and Quality Control (QA/QC)

If you have questions about the Quality Assurance and Quality Control aspect of the PHIUS+ program, please email PHIUS at qa@passivehouse.us. We will be happy to assist you with queries on topics such as:


General Inquiries

If you have a question that does not fit into any of the categories listed above, please email PHIUS at info@passivehouse.us.


Find PHIUS-Certified Building Professionals

PHIUS Certified Passive House Consultants (CPHC®), Builders, and Raters are here to support project teams in the certification of their PHIUS+ projects every step of the way.

Search the  PHIUS Certified Professionals Directory to find qualified professionals in your area.


A Certified Passive House Consultant (CPHC) typically is an architect, engineer, or energy consultant who will help design the project. CPHCs do the WUFI passive energy model, and they are the primary point of contact for the pre-certification process. Find a PHIUS Certified Passive House Consultant (CPHC®)


A PHIUS Certified Builder has taken the PHIUS certified building course and passed the exam. They build the pre-certified projects, execute air-tightness, and many other in-the-field requirements.  FInd a PHIUS Certified Builder


A PHIUS+ Rater goes on site and completes the quality assurance and quality control checks for the project. They are an integral part of the design team. They make sure that the designs get built correctly. Find a PHIUS+ Rater


PHIUS+ Verifiers do mainly the same thing as raters—on-site field inspection to make sure the designs are appropriately built—but in larger buildings. Find a PHIUS+ Verifier.

Contact PHIUS for support certifying your next passive building project.

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