A measure of how well a window or door prevents heat transfer. Lower U-factors indicate better insulating performance.
U-factor is essentially the inverse of R-value, commonly used for windows and doors. California's Title 24 specifies maximum U-factors for different climate zones. Look for U-factors of 0.30 or lower for energy-efficient windows.
Related searches: U factor, window U factor, energy efficient windows
Looking for contractors who specialize in u-factor? Buildda connects you with vetted professionals in your area.
Discover how new windows can lower your energy bills, increase home comfort, and boost property value. Plus, learn about California rebates.
You don’t need a major renovation to elevate your home’s curb appeal. Even the simplest upgrades can breathe new life into your exterior, boost your property value, and make a lasting impression on visitors.
A measure of thermal resistance—how well a material prevents heat transfer. Higher R-values indicate better insulation.
Glass with a thin metallic coating that reflects heat while allowing visible light through, improving window energy efficiency.
A measure of how much solar radiation passes through a window—expressed as a number between 0 and 1.