Ask an Expert: Reducing Window Energy Losses

What are some low-cost ways to reduce energy loss through windows?

Windows can cause up to 25% of your home's heat loss in the winter and heat gain in the summer, depending on where you live. These tips can help you save on energy costs and make your home more comfortable:

• Inspect the outside of your windows each year. If you see cracks or chips in the caulk, remove and replace it.
• Install insulating curtains or shades wherever possible.
• In winter, close window treatments at night to help keep cold air out. During the day, open curtains and shades to allow heat gain, especially on south-facing windows.
• In summer, close window treatments on south- and west-facing windows to reduce heat gain during the day.
• If you live in a warm climate, install awnings to block solar heat gain on south- and west-facing windows.

When it comes time to replace your windows, make sure they are ENERGY STAR®-certified. ENERGY STAR windows are up to 15% more efficient than standard products.

Return to newsletter