What is Passive Building?

Passive building puts passive house principles into practice to create safe, resilient, comfortable and – most importantly – energy efficient structures, from commercial to residential to multifamily. Phius sets the standard for passive house in North America and has certified 3,000+ professionals.

The Smartest Way to Zero

Buildings designed according to Phius passive house standards provide energy savings of 40-60%, compared to regular buildings. In the quest for net zero in the building industry, passive is truly the only answer — and Phius sets the standard.
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How it Works: Principles of Passive Building

  • Employs continuous insulation throughout its entire envelope without any thermal bridging.
  • Creates an extremely airtight building envelope, preventing infiltration of outside air and loss of conditioned air.
  • Employs high-performance windows (double or triple-paned) and doors - solar gain is managed to exploit the sun's energy for heating purposes in the heating season and to minimize overheating during the cooling season.
  • Uses some form of balanced heat- and moisture-recovery ventilation.
  • Uses a minimal space conditioning system.

A Better Way Forward: The Advantages of Passive Building

Safe

Safe

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

Resilient

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

Healthy

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

Durable

Durable

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

Comfortable

Comfortable

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

Affordable

Affordable

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

Engaging a Community of Professionals

About Phius

Phius founded the passive house movement in North America. We certify buildings, products and professionals on the cutting edge of the passive building industry. We are the only passive standard that includes a third-party quality assurance process.