Phius Window and Door Certification Program
Phius
Phius certifies high-performance windows and doors for passive building.
Key Strengths
- Product-specific thermal performance data at any dimension, not just standard sizes
- No physical testing required — certification accessible with or without existing test data
- Third-party verified performance values increase credibility with practitioners
- Direct product visibility in the Phius Certified Product Database
- Datasheets available in both IP and SI units for modeling software compatibility
- Streamlines energy modeling and project review for passive building professionals
Ideal For
This certification is best suited for window, door, and skylight manufacturers seeking to differentiate their products in the high-performance and passive building market. It is also valuable for building professionals, architects, and energy modelers who need precise, product-specific thermal performance data for Phius or passive house projects.
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