AAMA Gold Certified Windows Are Also Tested for Energy Performance
For a window and door to receive an AAMA Gold Label they also need to be tested to the energy-efficient specifications of the National Fenestration Rating Council (NFRC). Thermal tests include U-Factor (measures heat transfer and insulation), Solar Heat Gain Coefficient (resistance to heat gain from the sun) and Visible Transmittance (the natural light that enters your home) and appear on the NFRC window label. The label also includes AAMA testing standards and ENERGY STAR® qualified regions.
Learn About The Simonton NFRC Label