Windows are one of the most significant means by which warmth leaves your home during the cold months and enters your home during the warm months. Without proper insulation, your windows may as well be large holes to the elements. Low Emissivity (“Low E”) glass or glazing is key to having proper insulation in your windows.
Low-E Glass lets natural light through the window but helps block solar radiation. This insulates your home against undesired heat gain. Low-E glass also helps keep warmth in your home in the Winter.
The climate you live in will help you assess what degree of Low-E coating you need for your windows. In cold climates, you want a lower degree of Low-E coating because you do not want to reflect away solar energy that could be used to heat your home. Where it is warmer, you want greater Low-E glazing.
If you buy new double pane or triple pane energy efficient windows, they will most likely already come with quality Low-E glazing on them. But if you have older windows that do not have Low-E glass, and you do not want to replace the windows entirely, you can have the glass coated with Low-E. This is less costly than replacing your windows although for maximum energy efficiency new windows would be a wiser choice.
Purchasing new windows that come with Low-E glass or having Low-E glazing applied to your existing windows is not without cost. But your energy bills will go down and over time these savings will more than pay for the windows. Moreover, qualifying energy efficient home improvements are entitled to a federal tax credit of up to $1,500. Finally, you local utility company may offer you additional credits or rebates if you invest in Low-E glass windows.
Given all of the benefits of Low-E glass windows, you should seriously consider installing them in your home. You will not only save yourself bundles of money, but you will also be doing something good for the environment.
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