Parade aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. When you’re comparing energy-efficient windows, the NFRC label can look ...

The National Fenestration Rating Council (NFRC) operates a voluntary program that tests, certifies, and labels windows, doors, and skylights based on their energy performance ratings. The NFRC label ...

Energy-efficient windows often feature multiple glass panes, gas fills, low-e coatings, and well-insulated frames. Proper installation is crucial to ensure a window's energy efficiency benefits are ...