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GHI HOME :: About Us :: Energy Efficiency Home

 

WHY ARE WINDOWS IMPORTANT?

Windows bring light, warmth, cooling breezes, and beauty into homes and give a feeling of openness and space to living areas. Although beneficial, windows can negatively impact a home’s energy efficiency, comfort, indoor air quality, and durability if not properly selected and installed. Windows can be major sources of heat loss in the winter and heat gain in the summer. In cold climates, windows can be responsible for 10 to 25 percent of a home’s heat loss during the winter and heat gain in the summer. While energy-efficient windows cost more than standard models, they can cut energy bills significantly and reduce heating and cooling loads enough to permit smaller and cheaper heating and cooling equipment and ductwork. Energy-efficient windows improve comfort in the winter by increasing surface temperatures and by being more airtight, both of which cut drafts. Increased surface temperatures alsoreduce condensation that forms on the inside frame and glazing during the winter, protecting building materials and reducing mold growth.

High-performance, energy-efficient windows usually use multiple glazings and insulated frames, which reduce unwanted noise from the outside. Another window technology —
low-emittance coating — blocks up to 98 percent of the ultraviolet radiation from the sun, reducing fading and wear on curtains, carpeting, and furniture.

Next: Steps to Window Selection


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