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Why Windows Shouldn’t Be Left Open During Summer

Windows are a source of natural ventilation. However, keeping them open on a hot summer’s day may not be the best idea. The summer breeze gives the illusion that fresh air is cooling your home when in actuality it’s letting in warm air. During hot days, it’s best to keep your window closed when temperatures are high (provided your home is adequately insulated) and to keep them open in the evening or at night.

Windows Shouldn’t Be Left Open During Summer

When Is It Okay to Open Windows?

As a general rule, you should only open windows when outdoor temperatures are lower than indoor temperatures. During summer, this is mostly applicable at night.

How to Keep Indoor Temperatures at a Comfortable Level

  • Make sure your attic has adequate insulation – Insulation helps keep indoor temperatures at a comfortable level by keeping cool air inside during summer and preventing heat from escaping in winter.

  • Check your windows for drafts – According to the Department of Energy, heat gain and loss through windows account for 25% to 30% of residential heating and cooling costs. This figure is expected to be higher if you have drafty windows. What are the warning signs you have drafty windows? A higher-than-expected energy bill, foggy window glass and rattling sounds are some of the warning signs you need to keep an eye out for in your home.

  • Install energy-efficient windows – While looking for energy-efficient windows, look for the ENERGY STAR® label. Only windows that have met the U.S. Environmental Protection Agency’s stringent performance standards have this label. Installing ENERGY STAR certified windows can lower households’ electricity bills by roughly 12% nationwide.

If you’re planning on replacing your old windows, Renewal by Andersen® offers a wide variety of energy-efficient windows, from casement windows to double-hung replacement windows. Our most energy-efficient windows are made from Fibrex®, an exclusive wood-and-vinyl composite with excellent insulative capabilities, and are equipped with High Performance™Low-E4® glass, our most energy-efficient glass option.

Want to learn more about our energy-efficient windows?

Renewal by Andersen of Southwest Missouri offers the best vinyl replacement windows in the state. To schedule a free consultation, call us at (417) 268-9301, or fill out this form.

Reviews

"Excellent service and product! They checked in with me every few weeks while we were waiting for the order. I was impressed with Sam, who measured my windows and headed the installation crew. He was respectful and patient with his team. They cleaned up after themselves. Before the new windows I had huge windows that didn’t open. Now I feel much safer and get better temperatures in those rooms."

Kimberly Kester
Jul 18, 2022

"My experience with Anderson Renewal was amazing! From the first meeting with Miranda to choose my windows and doors to the installation provided by Tim and his crew was a pleasure! I just bought a home built in the 1960's that needed new windows and a new double front door with sidelights. As everyone knows Anderson Windows are great, but it was the people I interacted with from Anderson that made it such a great experience. It took three days for the windows and door to be installed and they "worked" every minute they were here. My huge front door took most of the day to install because they had to put in a new header and other improvements to make it fit! They even put up new drywall on the inside. Many people in the neighborhood have stopped by to comment on my beautiful front door! I think the crew left my house cleaner than it was before they started! Constantly cleaning up after themselves. I am thrilled with my windows and feel lucky to have met the team at Anderson."

Kimberly Wilson
Jul 17, 2022

"Very professional staff . No pressure sales. The job they do is neat and clean, no cleanup left for the owner. Communication is great. Always informed on the status of of your product, AND the tin of cookies you receive afterwards is a pleasant plus."

Peggy Spivy Morse
Jul 13, 2022

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