Energy Efficiency

Window glass, its enhancements and the process by which it is placed into the frame is called "glazing." Energy-efficient windows use insulated or insulating glass -- meaning it has two or three panes of glass. The airspace in between the panes acts as a buffer, reducing the transference of heat or cold. Manufacturers further increase this insulating ability by filling the airspace with a dense, harmless gas such argon or krypton.

When you're trying to determine windows' energy efficiency, look for R- and U-values. The higher the R-value, the better the window reduces heating and cooling bills. The lower the U-value, the better the window insulates against heat transference. EnergyStar certifications and ratings from the National Fenestration Ratings Council also indicate energy efficiency.

Many manufacturers offer products of varied prices and options to meet broad preferences. Price will vary by style, by manufacturer and by material. Single hung and gliding windows tend to be less expensive than double hung or casements. Aluminum and vinyl, which vary widely in price and quality, are often the least expensive.

Windows, like shoes, are available in a wide variety of styles and materials. Finding one that fits takes some research. Because windows can be a major investment, it pays to see through sales language and product attributes for a clear understanding.

For more information, contact Crestline Windows & Doors at 800-552-4111 or www.crestlinewindows.com, or contact Golden Eagle Log Homes.