Today's awnings offer many benefits and one of the greatest benefits is energy savings. Exterior fabric window awnings can reduce interior heat in homes and businesses during periods of direct sunlight by 77% according to a study by the American Society of Heating and Air Conditioning Engineers. Since awning fabric doesn't trap heat and moisture, an awning can reduce air-conditioning costs by as much as 25%.
reduced mechanical equipment costs. Reduced peak demand may also result in energy cost savings in the future if residential customers are charged higher rates during peak periods. Another outcome of peak demand reduction is the overall savings to utility companies and the public from a decreased need to build new generating capacity.
Awnings have advantages that contribute to more sustainable buildings. First, awnings result in cooling energy savings by reducing direct solar gain through windows. This directly reduces the impact of global warming from greenhouse gas emissions. A second benefit is that peak electricity demand is also reduced by awnings potentially resulting in reduced mechanical equipment costs. Reduced peak demand may also result in energy cost savings in the future if residential customers are charged higher rates during peak periods. Another outcome of peak demand reduction is the overall savings to utility companies and the public from a decreased need to build new generating capacity.
A new energy study funded by The Professional Anwing Manufacturers Association (PAMA), shows that fabric awnings or exterior shades can save homeowners as much as $200 annually by reducing the load of air conditioners (depending on where a home is located). The 2012 study calculates the imapact of awnings in 50 cities across the United States. Click HERE to view the 5 page results specific to Tucson, AZ.
In 2007, a study was conducted of awnings in residential buildings and the impact on energy use and peak demand. This study was done throughout 12 major U.S. cities, including Phoenix. This report was developed with support from the Professional Awning Manufacturers Association (PAMA).
With Phoenix's climate being so similar to Tucson's,
we found this report to be very interesting and informative.
This table shows the impact of awnings on a typical house in Phoenix, Arizona with different orientation conditions.
(click image to enlarge)
In Phoenix, the awnings reduce the cooling energy 14–20 percent compared to a completely unshaded case. As in Boston, because awnings block passive solar gain in winter, heating energy increases if the awnings remain in place 12 months a year. Of course, the relative importance of the heating versus the cooling season impacts varies by climate. In predominantly warm climates like Phoenix or Tucson, the impact of awnings on reducing passive solar gain is less of a concern.
The total cost of heating and cooling is reduced 13–18 percent in Phoenix when awnings are only used in the summer. This table also shows that awnings reduce peak electricity demand by 9–12 percent in Phoenix, potentially contributing to the ability to downsize the mechanical cooling system. The actual savings are greater with the clear glass windows and less with the low solar-gain low-E glass windows.
Considering an addition to your home? Awnings that shade your windows, decks and patios create an environment that allows you to enjoy outdoor activities while avoiding excessive heat and sun exposure. A canopy over your deck or patio offers a long-term solution to needed space at a lower cost. With today's technology you can open and close a retractable awning with no more than the touch of a button using manual, automatic, remote-control and sensor-activated controls. Awnings and canopies will shade your deck from the sun, and provide outdoor protection on rainy days. In addition, canopies and awnings protect inside furnishings such as furniture, drapes and carpet from fading due to UV rays.
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