What Is Window SHGC (and Why Should I Care)?

While many homeowners may not be familiar with their window’s solar heat gain coefficient (SHGC) rating, it’s essential to understand what it means and why it should matter to you. Read on as Ganser Company, your trusted exterior remodeling contractor, explores the importance of the SHGC rating to help you make the right decisions for your home’s energy efficiency and comfort.

What Is Window SHGC?

The SHGC rating represents the amount of solar heat transmitted through a window. This value ranges from 0 to 1, with a lower number indicating less heat gain and a higher number indicating more heat gain. SHGC is measured by considering the direct solar radiation admitted through the window and the absorbed heat subsequently released into the indoor space.

Various factors affect a window’s SHGC, including the type of glazing, the presence of low-emissivity (low-E) coatings, and the window’s frame material. All these elements contribute to the window’s overall performance regarding heat gain and energy efficiency.

Why Should I Care About Window SHGC?

Understanding and considering SHGC in your window selection can significantly impact your home’s energy efficiency and cost savings. Windows with a suitable SHGC can help maintain a comfortable indoor temperature, reducing the need for heating or cooling and lowering your energy bills. Additionally, improved energy efficiency reduces your home’s carbon footprint and lessens its environmental impact.

How to Choose the Right Window SHGC for Your Home

As you evaluate your window options, keep in mind that the optimal SHGC depends on various factors:

Climate considerations. In colder climates, windows with a higher SHGC can capture more solar heat, reducing heating costs. Conversely, windows with a lower SHGC can help keep your home cooler in hotter climates by admitting less heat.
Building orientation and shading. The direction your home faces can influence the desired SHGC for your windows. South-facing windows can benefit from a higher SHGC in colder climates, while east- and west-facing windows may require a lower SHGC to avoid excessive heat gain. Proper shading can also play a role in determining the appropriate SHGC.
Window size and type. Large windows or those covering a significant portion of your home’s walls may require different SHGC values than smaller ones. Additionally, the window type, such as single-pane, double-pane, or triple-pane, can influence the optimal SHGC.

Get in Touch With Exterior Remodeling Contractors

Selecting the right windows for your home can be daunting, but professional experts have the knowledge and experience to help you navigate the various factors that influence a window’s SHGC. At Ganser Company, we can assist you in choosing the best windows in Madison, WI. Our team offers a range of home services, including roof repair and roof rebuild. For a consultation, call (608) 222-1243 or fill out our online contact form.