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Solar heat gain coefficient (SHGC) is the fraction of solar radiation admitted through a window, door, or skylight -- either transmitted directly and/or absorbed, and subsequently released as heat inside a home.
When purchasing ENERGY STAR qualified windows, look for the U-Factor and the Solar Heat Gain Coeficient (SGHC). The U-Factor measures how well the window in-sulates. While the U-Factor can take any value, in general for windows it ranges from 0.20 to 1.20. The lower.
The amount of solar radiation that can pass through a window or skylight can be measured in terms of its solar heat-gain coefficient, or SHGC. SHGC ratings are used to help in quantifying the energy efficiency of windows and skylights.
Solar heat gain coefficient (SHGC) ratings help to measure how energy efficient a home is and detail how much of the sun’s heat can get through windows and other see-through parts of a building. Understanding SHGC can help you pick the windows that will maximize your comfort and lead to lower energy bills.
In the top right corner of the label under Energy Performance Ratings, you’ll see a number between 0-1. That’s the Solar Heat Gain Coefficient (or SHGC Factor). This number measures the amount of solar heat that reaches a window against the amount of heat that filters through to the inside.
What Is Solar Heat Gain Coefficient? The SHGC rating represents the fraction of solar radiation that can be transmitted through or is absorbed by the window. This gives you an idea of the window’s performance in terms of how much solar heat and sunlight will be released inside your home.
At a minimum, install windows that are ENERGY STAR rated or that meet or exceed the ENERGY STAR program requirements for windows, doors, and skylights. Consider triple-pane and/or ENERGY STAR “Most Efficient” windows.
The Solar Heat Gain Coefficient (SHGC) measures how much solar radiation passes through a window or other glass surface and enters your building. It’s a crucial factor in determining how much heat gain occurs.
Solar Heat Gain Coefficient (SHGC) The SHGC number signifies how much solar radiation the window lets into a home. A window with a low SHGC number allows relatively little heat from sunlight...
Solar Heat Gain Coefficient (SHGC) tells you how well the product blocks heat caused by sunlight. The lower the SHGC, the less solar heat the window transmits.