The Phius Difference

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Phius puts passive building principles into practice in a way that is both cost-optimized and climate-appropriate. This means you will pay less to build it than for other passive certifications and your home/building is quality assured, so you can count on an extremely comfortable, healthy, and resilient building

Learn More About Passive Building Principles

Guaranteed Comfort

Our third-party quality assurance ensures that every Phius building is comfortable and healthy.

Cost-Optimization

The Phius Standard is designed to weigh energy saving measures with the cost of implementation to find the perfect equilibrium for each project.

Climate Specificity

At Phius, we understand that different climate zones call for different design strategies to ensure maximum efficiency and cost-effectiveness.

Tangible Results

Phius certified projects are proven to use 40-60 percent less energy than code-built buildings at minimal to no upfront cost premium.

Iterative Review Process

When a project team submits designs for Phius certification, we work with the submitter to help guide them to certification.

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We were able to deliver these buildings without additional cost, and [that] was a big goal for us.

Chris Benedict , Owner, Chris Benedict, R.A.

We appreciate that Phius plays well with and builds upon HERS and Energy Star and Zero Energy Ready Homes. Not only does the Phius Certification standard provide a lofty and inspiring end goal for each project, but it offers a clear delivery pathway.

Chris Dwyer , CPHC, BEMP, BCxP, Vice President, Energy, Sol Design+Consulting

The robust on-site verification requirements really ensure the buildings are not only designed with efficiency in mind, but also tested and confirmed to provide comfortable, healthy, and efficient living environments for our low carbon future.

James Moriarty , Vice President, Sustainable Comfort, Inc.

Safe

Phius-certified buildings go through a rigorous quality control process, ensuring safety for the environment and the building inhabitants.

Resilient

Phius buildings have been proven to be more resilient in the event of natural disasters, such as wildfires and extreme heat and cold events.

Healthy

Superb indoor air quality is a prerequisite for Phius certification – you can count on a healthy environment.

Durable

The holistic design of Phius buildings make them uniquely built for the long haul.

Comfortable

Superinsulation and efficient mechanical systems help maintain the strict comfort standards required for Phius certification.

Affordable

Phius projects require minimal to no additional upfront costs, while guaranteeing substantial energy cost savings in the future.

Carbon neutrality is one of our prime directives at Phius, and with our climate-appropriate energy targets and electrification requirements, constructing a building to our standards goes a long way in reducing a person or organization’s carbon footprint.

Phius ZERO certification pushes further than the flagship Phius CORE, by achieving all of the same requirements and also netting out energy use on an annual basis with renewable energy. These projects have operational carbon neutrality and are set up for energy independence. More About Zero