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Replacement Window Energy Savings
Editor In Chief, United Home Improvement
Replacing old windows is one of the easiest and most apparent forms
of energy savings. Old drafty single pane windows are very common in
older homes. Having a single pane window is like having a leaky
faucet. Air is constantly escaping your house. Replacing ineffective
windows can give your house a refreshing new look while also saving
energy and money in the future.
The name of the game is double pane. Double pane windows will save
you money on your heating and cooling bills. They significantly
reduce heat loss in the winter and can very easily reduce heat gain
during the summer. It is suggested that a double pane window be
covered with a special low-e coating (low emissivity). Where to
apply this coating depends on your geographic location. A
professional window contractor in your area can assist you in
performing such a task.
Let us not forget about how important it is to glaze your windows.
Multiple layers of glaze on your windows can insulate your house and
keep heat inside. However, new technologies have developed and
people are now focusing not only on the glaze, but on the thickness
of airspace in between the windows. Thicker space creates better
insulation. However, too much space is a waste as well. Anything
beyond 1” will have no effect on your energy saving performance.
Multiple paned windows can be filled with argon or krypton gas to
reduce heat loses and increases R-values. The higher the R-value
(resistance to heat loss) the better insulation you have. The
U-Value is another important thing to consider when replacing old
windows. The U-Value is a measurement of heat transfer. The lower
the U-Value, the less heat transfers. With low U-value window
replacements, managing your homes heat lose and gain will become
very easy. Make sure when comparing new windows that you are
checking U and R values calculated for the entire window. Some
manufactures only provide values for the center of the glass.
Last but least, make sure to look for a National Fenestration Rating
Council (NFRC) label on your windows (the NFRC has created
industry-wide standards). The NFRC guarantees credible information
on energy performance of windows. It is also recommended that your
windows have low solar heat gain co-efficient (SHGC) to maximize
energy benefits. The ENERGY STAR® logo will be a definite sign that
your window is equipped with all of these energy saving aspects.