Windows are an essential part of any home. Not only do they look nice, but they also keep us safe from the weather and keep our homes at a comfortable temperature. U-value and Solar Heat Gain Coefficient (SHGC) are two measurements used to evaluate how effective windows are at insulating your home and keeping it cool in the summer while still allowing light into it.
Understanding the difference between these two measurement methods can help homeowners determine what type of windows in the Harrisburg, PA, area work best for their needs.
SHGC measures the amount of solar radiation that can pass through a window and into a home as light or heat. Regardless of the temperature outside, windows can still absorb heat through solar radiation. On the other hand, the U-value measures how well-insulated a window prevents outdoor temperatures from entering your home. It explains both the heat that enters and exits the glass. The lower the U-value, the greater the resistance of a window to heat transfer and the larger its insulating value.
SHGC is a rating between zero and one, with one indicating that all solar radiation entering the home will be absorbed as heat. By contrast, U-value ranks replacement windows in terms of how much heat passes through them, measured in British thermal units per hour, with lower numbers implying better insulation capabilities.
When planning for windows, it is important to consider both SHGC and U-value. While each type of measurement has unique benefits, understanding the difference between them can help you make an informed decision that meets your home’s individual needs.
If you want to learn more about window replacement, whether single or double-hung windows, contact Renewal by Andersen® of Central Pennsylvania by calling us today at (717) 591-4900 or filling out our online form to schedule a free in-home consultation! We serve customers in Harrisburg, PA and the surrounding areas.
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