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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

"Their workers who installed the windows were excellent. Our experience with the sales rep was pleasant. He did not pressure us. He made suggestions that saved us money."

Kristin Palmer
Oct 20, 2022

"I would give everyone involved in the whole process a 10 out of 10. With the exception of the window installation crew. They get an 11 out of 10. I can't express in words what an excellent job they did. They went above and beyond."

Don Smith
Oct 25, 2022

"Although it is a process and doesn't happen overnight the wait is worth the end results. A Representative will come to your home and walk you through the entire process. It does take a few weeks from the time they send someone to your home to personally measure your windows to the time the factory specifically custom cuts your windows and ships them out. However, the end result is overwhelmingly satisfactory. The crew sent to install them were professional, cleaned up after the job was completed and did the job in half the time they thought it would take. Highly recommend!"

Kimberly Baugh
Oct 27, 2022

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