Window Awnings 
For Electric & Natural Gas Customers
Window awnings can reduce solar heat gain in the summer by up to 65% on south-facing windows and 77% on west-facing windows.
In the past, most awnings were made of metal or canvas, which required maintenance by recovering every five to seven years. Today, awnings are made from synthetic fabrics - such as acrylic and polyvinyl laminates - that are water-repellent and treated to resist mildew and fading. Whatever the fabric, you should choose one that is opaque and tightly woven. A light-colored awning will reflect more sunlight. Install vents or openings along the top and sides of an awning for ventilation.

Be sure to select the right awning for your particular needs as some awning types are not as effective as others. A small, horizontal awning will completely shade a south-facing window during the summer. An east- or west-facing window needs an awning that extends down to cover a large percentage of the window. Some awnings are retractable to allow the sunlight in during winter months to help warm your home in the winter. 

Visit the DOE website for more on awnings.
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