National Fenestration Rating Council (NFRC)
The National Fenestration Rating Council (NFRC) is a nonprofit organization that administers the only uniform, independent rating and labeling system for the energy performance of windows, doors, skylights and attachment products. Its goal is to provide fair, accurate and reliable energy performance ratings so that:Architects, builders, code officials, contractors, homeowners and others can compare different products and make informed product choicesBuilding officials, state government employees and others involved in code development and enforcement can determine if products meet local codesGovernment- and utility-run energy efficiency programs can establish performance requirements and standardsManufacturers have a fair and level playing field to compare products and an accurate method of showing the energy benefits of new designs or technology