Energy Efficient Windows

How to Choose Energy Efficient Windows that Save Money

According to the U.S. Department of Energy, windows can account for 10% to 25% of a heating bill by letting heat out. Windows that are not energy efficient mean increased costs, especially in Connecticut, Massachusetts and the states in New England with months of cold weather. When shopping for new windows, it is wise to know what to look for beforehand to achieve ultimate cost savings. Here are a few tips on what to look for:


Energy Star Logo

The U.S. Department of Energy and the U.S. Environmental Protection Agency worked together to implement a program that helps Americans save money and protect the environment. According to their website, in 2010 with the help of Energy Star, nearly 18 billion dollars was saved. Products with the Energy Star logo meet strict criteria set by the EPA and the U.S. Department of Energy. There are recommendations for 4 different climate zones.


One of the most important qualities to look for when choosing an energy efficient window is the U-Factor, or thermal transmission. In essence, this factor measures the rate of heat lost through a product. The lower the U-Factor, the lower the amount of heat lost. For areas with cooler climates like Connecticut for example, it is best to choose a window with a low U-Factor to reduce the amount of heat lost and lower energy bills at the same time.

Solar Heat Gain Coefficient Rating (SHGC)

Solar heat can be highly beneficial when it comes to heating our homes and reducing energy costs. Windows with low SHGC ratings mean they are better at blocking heat from the sun and are more effective in lowering cooling costs. The climate you live in will ultimately determine what type of rating is better for your home. A home in Connecticut or Massachusetts should choose a window with a higher SHGC rating because the window will be able to collect more solar heat, reducing heating costs in the winter.

Air Infiltration

This measures the amount of air that leaks into a house from outside. The lower the air leakage rating, the less air is exchanged between indoors and outside. Choosing a product with a low air leakage rating will lower energy costs and keep your home warm during the cold weather. Guides are available in order to determine which windows have the lowest air leakage ratings.

Vinyl Frame

Aside from requiring little to no maintenance and no painting, vinyl windows are superior to wood and aluminum in thermal insulation, effectively reducing heating costs. Vinyl windows are easily customizable coming in a wide assortment of styles and prices.

Ideal U-Factors and Solar Heat Gain based on Climate
Ideal U-Factors, & Solar Heat Gain based on Climate

Advanced Window Systems LLC offers you energy-efficient products that will lower your bills and keep your home feeling the way you want it to all year round. Contact us now for a FREE in-home estimate and for more information on how we can help 1-800-CALL-AWS


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