Why does NFRC exist?
Back in the early 1980s, window, door and skylight manufacturers introduced new technologies designed to improve the energy performance of their products. Unfortunately, consumers had no good way to judge the effectiveness of these technologies, or to compare the performance of different products accurately and reliably. With the federal government beginning to think about establishing an independent agency to rate fenestration energy performance, the industry decided to take the initiative and formed NFRC in 1989.
