Welcome to the Phius training site! 

Phius has been certifying passive building professionals since 2008, and we’re happy to have you here. Once you complete the your registered training you’ll join a network of over 3,000 Phius-trained professionals working to make passive building the mainstream market standard.

Here in this online training site you’ll find recommended readings and online training modules divided up by topic for Phius Certified Consultants (CPHC®), Phius Certified Builders, Phius Certified Raters, Phius Certified Verifiers, and more.  Please proceed through the available materials as required by your specific training.

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    Register to preview a portion of the new building science course.