How to choose Energy Star windows

For many homeowners, heating costs make up the bulk of their annual energy expenses. If you’re hoping to buck this trend and save on your power bill, one way to do so is to equip your home with Energy Star windows.

According to the U.S. Department of Energy, making the switch could mean saving up to $465 a year on your energy bill. Plus, high-performance Energy Star rated windows are up to 40 percent more effective than standard windows are at preventing heat loss.

Determine your energy efficiency requirements
The United States is divided into four climate zones, each with its own energy efficiency requirements. To know which zone your property is in, visit energystar.gov and then find out which product is appropriate for that zone.

For instance, windows used in the northern zone (the largest one) should have a U-factor no higher than 0.30. The lower the U-factor, the more energy efficient a window or door is.

Take your needs into account
If you home is older or exposed to extreme weather conditions, you may be better off choosing specialized products. For instance, high-solar gain glazing may allow some people to save money on their annual power bill, while others might benefit from high-performance window seals. Make sure to speak to a professional to make the right choice.

Energy efficient windows are pricy but a good investment, if they’re installed properly. In addition, don’t forget that replacing your old windows with Energy Star ones could entitle you to a tax credit.