Sustainability is incredibly important to Andersen. The company is committed to creating products that meet rigorous certification standards, like those of the National Fenestration Rating Council (NFRC). NFRC is a nonprofit organization that administers the only uniform, independent rating and labeling system for window and door products.
Formed in response to the energy crisis in the 1970s, NFRC recognizes the innovative ways the window and door industry addresses concerns about energy consumption, and serves as a way to compare the performances of different products accurately and reliably. Products are rated on their thermal transmittance (or U-factor). The U-factor is determined by simulating and testing the product’s solar heat gain, visible light transmittance, air leakage and condensation resistance. Today, more than 500 manufacturers, including Andersen, rate and label more 1.67 million products with data provided by NFRC.
