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Energy Efficient Windows for Tacoma Homeowners
The Department of Energy (DOE) and the environment Protection Agency (EPA) have developed an Energy Star® designation for products meeting certain energy performance criteria.
Since energy efficient performance of windows, doors, and skylights varies by climate, product recommendations are given for three U.S. climate zones. For making comparisons among Energy Star® products, use the NFRC Label or the NFRC Certified Products Directory.
About NFRC
The National Fenestration Rating Council (NFRC) is a non-profit organization created by the window, door, and skylight industry. It consists of representatives from fenestration product manufacturers, major trade organizations, state energy officials, research organizations, utilities, specifiers, testing laboratories, energy consultants, public interest groups, representatives from the building and code industries, and government agencies.
Its mission is to establish and maintain a fair, accurate, and reliable energy performance rating and labeling system for windows, doors, and skylights.
The NFRC label provides the only reliable way to determine the window energy properties and to compare products. The NFRC label appears on all products certified to the NFRC standards and on all window, door, and skylight products which are part of the Energy Star program. At this time, NFRC labels on window units give ratings for U-Factor, Solar heat Gain Coefficient (SHGC), Visible Light Transmittance (VT), and Air Leakage (AL).