Update or Replace Windows

Energy efficient windows are an important consideration for both new and existing homes. Heat gain and heat loss through windows are responsible for 25%–30% of residential heating and cooling energy use.

If you are selecting windows for new construction or to replace existing windows, it’s important to choose the most efficient windows you can afford that work best in your climate.

If your existing windows are in good condition, taking steps to reduce the energy loss through windows can make your home more comfortable and save you money on energy bills.

You have two broad options if you hope to reduce the amount of energy lost through your windows and improve the comfort of your home:

1. Update your existing windows to improve efficiency
2. Replace your windows.

Update Existing Windows to Improve Efficiency
If your windows are in good condition, taking steps to improve their efficiency may be the most cost-effective option to increase the comfort of your home and save money on energy costs. There are several things you can do to improve the efficiency of your existing windows:

• Check existing windows for air leaks
• Caulk and weatherstrip. Check out our do-it-yourself project to learn how to weatherstrip double-hung windows.
• Add energy efficient window coverings. Learn more about your window covering options.
• Add storm windows or panels
• Add solar control film
• Add exterior shading, such as awnings, exterior blinds, or overhangs.

With any efficiency improvements, take steps to ensure proper installation and check for air leaks again after making the improvement.

Read more: Update or Replace Windows