How to Tell if a Replacement Window Meets the Energy Efficiency Tax Guidelines

A replacement window is one of the eligible building components that can qualify for the Energy Efficiency Tax Credit under the American Recovery and Reinvestment Act of 2009. The tax credit allows a homeowner who installs eligible new windows in their home between January 1, 2009 and December 31, 2010, to take a tax credit of 30 percent of the cost of the windows (without installation) up to a maximum of $1,500.

But not all Energy Star products will qualify for the credit. In order to qualify, the windows must also have a U-Factor equal to or less than 0.30 and a Solar Heat Gain Coefficient (SHGC) equal to or less than 0.30.

The National Fenestration Rating Council, a nonprofit agency created by the window, door and skylight industries, developed a window energy rating system. Homeowners can easily see all of a window’s energy performance ratings on the NFRC label that is attached to all products certified to meet the NFRC standards. The label is also attached to all products which are Energy Star certified.

U-Factor measures the rate of heat loss in a window. The lower the U-Factor, the greater a window's resistance to heat flow and the better its insulating value. Look for a rating of 0.30 or less.

The SHGC is stated as a fraction of a number between 0 and 1 and measures the amount of solar radiation allowed through a window. Solar radiation can directly enter a house through the glass and can also be absorbed by the glass and then released inward. The lower a window's solar heat gain coefficient, the less solar heat it transmits. Look for a rating of 0.30 or less.

For more information and details on the credit, visit the government's Energy Star website and consult your own tax advisor.

With today’s NFRC labeling system, it is easy to tell whether or not a new window will qualify for the Energy Efficiency Tax Credit.

To read more about replacement windows and saving energy, check out the article Window Replacement Saves Energy and the Environment.

And if you live in or near Manassas, Virginia, feel free to contact Greco Remodelers, Inc., for a free no cost, no pressure estimate for your Manassas replacement window project or call us at 703-369-4446.

P.S. For more ideas about replacement windows for your home, check out our new video, Manassas Window Replacement.