Windows Can Make or Break Summer Energy Bills, Here’s Why

July 25, 2019

This type of air purifier can cut down on summer allergies

We’ll get straight to the point: your windows can make a pretty big impact on your energy bills. If you implement the right window solutions, you could save quite a bit of money on cooling costs. On the flip side, if you ignore the impact windows make on your AC bill, you could see the cost of your cooling bills spike during the summer. 

But exactly how do windows affect your summer energy bills? We’ll explain below. In addition, we’ll provide tips on how to reduce energy loss through windows, so you can stay cool without breaking the bank this summer. 

How windows can affect your summer energy bill

According to, heat gain through windows is responsible for 25%–30% of residential cooling energy use. 

Think about how much your AC bill is during the summer months… now think of what 25–30% of that bill is. 

That’s a lot of money! 

If you think about it, windows are essentially a huge hole in your home’s insulated infrastructure. Unless you have quality, double-pane windows that are well-sealed and insulated, it’s fairly easy for heat to enter your home and conditioned air to leave it via your windows.

Now that you know how windows can impact your cooling costs, let’s talk about how you can utilize your windows to save you money on cooling costs. 

Ways to reduce energy loss through windows

There are 2 main ways to reduce energy loss through your windows:

  • Replace/update your existing windows 

  • Install window coverings

Tip #1: Replace/update your existing windows

Replacing your existing windows can be a big investment up front, but can definitely pay off in the long run. If you have old or poorly-insulated windows, you could be losing a lot of conditioned air via these windows and bringing in quite a bit of heat as well. 

You can reduce energy loss through windows by...

  • Installing high-quality window insulation

  • Investing in double-pane windows

  • Making sure that your windows are properly sealed

  • Sealing any cracks or holes around your windows

The best way to determine what you should update/replace is to have a professional come and take a look. A professional should be able to quickly tell you whether your best option is to replace your windows or if you simply need new insulation or weatherstripping installed.

Tip #2: Install window coverings

Another way to reduce cool air loss via windows is to install window coverings. There are a variety of window coverings that can help reduce heat intake and cooling loss, including:

  • Awnings

  • Blinds

  • Tinting 

  • Drapes/curtains

According to, installing medium-colored drapes with white-plastic backings can reduce heat gain by 33%. 

Installing awnings can also make a big impact, reducing solar heat gain by up to 65% on south-facing windows and 77% on west-facing windows

Want help minimizing your summer energy bills?

Although windows play a large part in how much energy your AC expends during the summer, your AC system itself plays an even larger role. If you think your AC bills are too high or simply want to lower them…

Schedule an appointment with us! 

We have a great AC maintenance plan that could help your AC run more efficiently, saving you money in the long run.