Phius Certified Verifier

Phius Certified Verifiers deliver on-site quality assurance and oversight for large-scale residential and non-residential passive building projects.

Verifier Training Program Overview

The Role of a Verifier

Phius Certified Verifier training is geared toward professionals with experience testing and commissioning multifamily and non-residential buildings.

For a project pursuing Phius Certification, the Verifier is the 3rd party quality assurance professional responsible for on-site inspections and performance testing throughout the construction process and at final construction.

These professionals are critical to ensure that the building is built and operating to the plans and specifications that are design certified by Phius.

Phius Certified Verifier Program Overview

View the Phius Certified Verifier Training Schedule

Learn about the Phius Certified Verifier Exam

Meet the Phius Certified Verifier Instructors

View the Phius Certified Verifier Manual

Key Competencies of Phius Certified Verifiers

Building Science

Phius professionals learn how controlling moisture, heat, and airflow in buildings define best practices in building design for comfort, efficiency, durability, and air quality.

High Performance Building Enclosures

From moisture control strategies to thermal-bridge-free design strategies, passive building places emphasis on getting the enclosure right. Phius Certified Verifiers inspect the enclosure and quality of insulation installed.

High Performance Mechanical Systems

Balanced ventilation and high-performance heating, cooling, and domestic hot water systems are critical elements of passive building design. Verifiers must understand how to commission and test high performance equipment.

Large Building Airtightness Testing Strategies

An airtight enclosure is cornerstone to passive building. Phius Certified Verifiers understand large building testing protocols and how to inspect and troubleshoot an air control layer in the building enclosure.

Phius Certification Requirements

Verifiers are responsible for ensuring the project meets all inspectable, mandatory requirements and have a deep understanding of the Phius Certification program requirements.

Co-Requisite Program Requirements

The third party co-requisite programs build the foundation for Phius' set of quality assurance requirements. Verifiers hold the knowledge of these foundational programs for non-residential and multifamily construction projects.

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I became a Phius Certified Rater in 2012 and a Verifier 3 years later. The Phius team is continuously updating the program and guidance to help ensure we have the tools and resources to be successful.

Karla Butterfield , Sustainability Director, Steven Winter Associates, Inc.

I work on passive house multifamily affordable housing projects in New England designing sustainably for social justice. I highly recommend becoming a Phius Certified Verifier and being part of a group of people who share similar values and interests.

Nicole Burger , MaGrann Associates