NFRC Certification: Your Gateway to the North American Market

In the North American construction industry, the NFRC (National Fenestration Rating Council) label is more than just a sticker—it is the universal language of energy efficiency. For architects, builders, and homeowners in the U.S. and Canada, this certification is the definitive proof of a window or door's performance.

Why NFRC Matters

Compliance is key. Most U.S. states enforce strict energy codes (such as California Title 24) that mandate NFRC data for building permits. Furthermore, obtaining the ENERGY STAR label and qualifying for LEED green building credits are impossible without NFRC certification. It ensures that the products installed meet rigorous standards for sustainability and comfort.

Understanding the 4 Key Metrics

Our NFRC-certified products provide transparent, independently verified data on four critical performance areas:

• U-Factor: Measures insulation. The lower the number, the better the product prevents heat loss.

• Solar Heat Gain Coefficient (SHGC): Measures solar heat blocking. A lower rating reduces cooling costs in hot climates.

• Visible Transmittance (VT): Measures daylight. Higher values mean more natural light enters the building.

• Air Leakage (AL): Measures airtightness. Lower values indicate a tighter, more weather-resistant seal.

Certified Performance for Sliding & Single-Hung Windows

Our NFRC certification specifically covers our core Sliding Windows and Single-Hung (Tilt) Windows. These classic American styles are engineered to deliver the thermal efficiency and airtightness required by the modern built environment. We submit full-scale samples—including frames, glass, and hardware—to accredited laboratories for simulation and physical testing. This process guarantees that every unit we manufacture matches the performance data on the label.

By choosing our NFRC-certified solutions, partners ensure their projects meet local regulations, achieve energy savings, and deliver lasting value to end-users.