How To Manage Your Home's Windows To Help Its Energy Efficiency During Summer

Your home's windows are one of the most poorly insulated areas on your home and can let energy escape your home. In fact, up to 30 percent of unwanted heat enters your home via its windows during the summer. By installing curtains, window blinds, and exterior awnings on your home's windows, and using your windows for optimal air circulation, you can help keep it cool during summer. Here are some tips to help you use your home's windows and keep your home comfortable during summer while reducing your energy bill.

Install Curtains and Blinds

To keep out the heat during summer from the sun's solar heat gain, install curtains or window blinds on windows facing east, south, southwest, and west. This allows you to block the sun from entering inside your home while the sun is directly shining on these windows and prevents it from heating your home's interior and pushing your air conditioner to work harder. As the sun travels through the sky, close the curtains or window blinds to the sun, then reopen them again when the sun is not directly shining into your home.

Installing curtains that are lined with a white or cream-colored lining can help reflect sunlight and its associated heat gain back to the outside. Darker-colored lined curtains will absorb the heat and distribute it into your home. Window blinds are helpful during summer, as they can be adjusted to block out direct sunlight from entering your home, but they can allow in some light into the room so you don't need to turn on lighting to see. Reflective window blinds can reduce solar heat gain in a room by up to 45 percent.

Open Windows for Circulation

During summer, the days may be hot, but depending on the climate you live in the temperature can cool off at night to a comfortable range. This allows you to open your home's windows at night to take advantage of the cooler temperatures and cool off your home's interior. Using box fans to circulate the outside air into your home can cool your home's interior to the same temperature, or close to the outside temperature. As soon as the temperature outside begins to cool down to at least the temperature inside your home, open your windows and use window fans to cool your home down. This can be helpful when you don't have an air conditioner or cannot use it to cool your home.

Open windows on opposite sides of your home and place a box or window fan in each window. If you have multiple box window fans, you can place them in more than one window to maximize the cooler air being pulled into your home. On the side of your home that is first shaded in the evening, direct the box fan or fans to blow into your home and pull outside air to its interior. Then, on the opposite side of your home, direct the second window fan or fans to blow air to the outside. This will create a current through your home, pulling cooler outside air into your home and expelling the warmer air to the outside.

Use Outdoor Window Awnings

Installing exterior window awnings on your home's south and west side can help block the sun from entering your home and heating it up. Window awnings can reduce summer solar heat gain by 65 percent on south-facing windows and 77 percent on west-facing windows.

As the sun sits higher in the sky during summer, the angle of the awnings blocks it from entering directly into your home. Then, in winter when you want to benefit from the warming effects of solar heat gain, the sun sits lower in the sun and the angle of the awnings allow the sunlight to and its heat gain to enter your home.

Use these tips to help keep your home cooler in summer and your home more energy efficient. For more information, visit a website such as