A Savvy Homeowner’s Guide to Insulated Glass Windows

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When it’s time to replace residential windows, whether a single window broke during roughhousing or it’s time to upgrade all the windows in your home, you have lots of options. For many homeowners, the number of frame, style, and glass types can seem overwhelming.

In this blog, we’ll discuss one of the best window options: insulated glass windows. We’ll cover how these windows work and how you may benefit from installing insulated glass windows in your home.

How Insulated Glass Works

Insulated glass windows consist of two or three panes of glass set in a single frame. Between each pane is an empty space. This space may be filled with dehydrated air or a specialized gaseous substances such as inert argon or krypton gas, both of which are invisible to the naked eye.

The panes themselves are usually composed of a strong heat-treated glass. The panes may be uncoated, or they may be finished with a low emissivity, or Low-E, coating.

Depending on your local climate, a windows and doors expert may recommend a particular insulated glass design to work specifically with weather conditions in your area. For example, some insulated glass contains an extra durable layer, which is specifically designed to better withstand hurricane-force winds and impact from debris.

On the most basic level, insulated glass improves your home environment by preventing both conduction and solar heat transfer.

Conduction through windows occurs when ambient heat travels through the glass, moving toward the colder area. Conduction can make your home colder in the winter and hotter in the summer, which can affect your energy bills as you adjust your heating and cooling systems.

Older windows don’t have many precautions against conduction so heat moves through these panes easily. With insulated windows, the inert gas or dehydrated air between the panes is a poor heat conductor so conduction happens at a dramatically reduced rate.

Solar heat transfer occurs when light passing through a window pane brings heat with it. The Low-E coating on insulated glass reflects away most of the heat in sunlight, helping reduce overall heat transfer and maintain your interior climate control.

How Insulated Glass Benefits You

High-quality insulated windows that suit your climate can provide a number of benefits. Homeowners may observe the following advantages after switching to insulated glass windows:

  • Better energy efficiency. Because insulated windows reduce the amount of heat that transfers both in and out of your windows, your HVAC system doesn’t have to work so hard to achieve and maintain your desired temperature. You may notice smaller energy bills and shorter automatic cycles when you run your HVAC system.
  • Less noise. These windows offer insulation from noise as well as temperature changes. This characteristic makes insulated windows a smart investment for homeowners who live near highways, walkways with heavy foot traffic, or train tracks.
  • More consistent interior temperatures. The way light and air interact with your windows heavily affects the temperature inside your home. For example, a window without a proper seal can let in drafts while a window with no protective coating can create hot spots around it. Insulated glass allows your home to achieve a more even temperature in every room, keeping the space more comfortable overall.

The difference you see with insulated windows depends on a number of factors. For instance, a window that’s in direct sunlight for more daylight hours will still allow in more heat than a window on the shady side of your home. However, overall, insulated glass provides better control of your home environment.


As you discover which window replacements best suit your home, talk to a windows and doors expert to determine whether insulated glass is an option you should consider. Find your insulated glass windows through Glasshopper Schor Glass today.

Glasshopper Schor Glass

116 W New York
Aurora, Illinois 60506
Phone: 630-897-5298

Hours Of Operation

Monday 7:30 AM - 5:00 PM
Tuesday 7:30 AM - 5:00 PM
Wednesday 7:30 AM - 5:00 PM
Thursday 7:30 AM - 5:00 PM
Friday 7:30 AM - 5:00 PM
Saturday 8:00 AM - 12:00 PM
Sunday Closed