Sherman Window Replacement - Home Window Installation in Sherman TX, Denison, TX, and Grayson County TX.

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Window Efficiency Knowledge-Base

Energy Efficient Window Design

11/2/2015

 
Before selecting new windows for your home, determine what types of windows will work best and where to improve your home's energy efficiency. It's a good idea to understand the energy performance ratings of windows so you’ll know what energy performance ratings you need for your windows based on your climate and the home's design.
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For labeling energy-efficient windows, ENERGY STAR® has established minimum energy performance rating criteria by climate. However, these criteria don't account for a home's design, such as window orientation.

Windows are an important element in passive solar home design, which uses solar energy at the site to provide heating, cooling, and lighting for a house. Passive solar design strategies vary by building location and regional climate, but the basic window guidelines remain the same—select, orient, and size glass to maximize solar heat gain in winter and minimize it in summer.
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In heating-dominated climates, major glazing areas should generally face south to collect solar heat during the winter when the sun is low in the sky. In the summer, when the sun is high overhead, overhangs or other shading devices prevent excessive heat gain.

To be effective, south-facing windows should have a solar heat gain coefficient (SHGC) of greater than 0.6 to maximize solar heat gain during the winter, a U-factor of 0.35 or less to reduce conductive heat transfer, and a high visible transmittance (VT) for good visible light transfer. See Energy Performance Ratings to learn more about these ratings.

Windows on east-, west-, and north-facing walls should be minimized while still allowing for adequate daylight. It is difficult to control heat and light through east- and west-facing windows when the sun is low in the sky, and these windows should have a low SHGC and/or be shaded. North-facing windows collect little solar heat, so they are used only for lighting. Low-emissivity (low-e) window glazing can help control solar heat gain and loss in heating climates.

In cooling climates, particularly effective strategies include preferential use of north-facing windows and generously shaded south-facing windows. Windows with low SHGCs are more effective at reducing cooling loads.

Some types of glazing help reduce solar heat gain, lowering a window's SHGC. Low-e coatings—microscopically thin, virtually invisible metal or metallic oxide layers deposited directly on the surface of glass—control heat transfer through windows with insulated glazing. Tinted glass absorbs a large fraction of incoming solar radiation through a window, reflective coatings reduce the transmission of solar radiation, and spectrally selective coatings filter out 40% to 70% of the heat normally transmitted through insulated window glass or glazing, while allowing the full amount of light to be transmitted. Except for spectrally selective, these types of glazing also lower a window's VT. See Window Types to learn more about glazing, coatings, tints, and other options when selecting efficient windows.

If you're constructing a new home or doing some major remodeling, you should also take advantage of the opportunity to incorporate your window design and selection as an integral part of your whole-house design—an approach for building an energy-efficient home.
© U.S. Department of Energy - http://energy.gov

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    This is an accumulation of information from SWR's staff and the U.S. Department of Energy.

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Sherman Window Styles

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Bow Windows
Casement Windows​
Single Hung Windows
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Picture Windows
Patio Doors / French Doors
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What Our Customers Are Saying:

"Looks Amazing! We are so happy with everything y'all did to the outside back windows. The arches are beautiful, and the sun brightens the room. Thank you!"
  -  S. Stevenson (Sherman, TX)
"We will certainly recommend you guys to our neighbors. Incredibly pleased with your work!"
 - P. Broughtenwell (Pottsboro, TX - Tanglewood area)

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Serving Sherman, Denison, Tom Bean, Howe, Bells, Whitewright, Luella, Pottsborro, Sadler, Southmayd, Whitesboro, Tanglewood, Gordonville, Collinsville, Tioga,
​and all surrounding areas in Grayson County TX with Affordable Window Replacement Services.