Replacing the windows on your home is an important decision. It requires careful consideration and understanding of factors such as climate, existing window technology, building orientation, and budget. One aspect often overlooked when replacing windows is the Solar Heat Gain Coefficient (SHGC). Knowing how to assess this rating properly can help you choose a window that offers comfort and energy efficiency. Twin Cities Siding and Roofing, a locally trusted siding and window replacement contractor, explains what you need to know.
What Is SHGC?
SHGC refers to the amount of solar radiation admitted through a window or skylight, either transmitted directly or absorbed and then released indoors.
This coefficient ranges from 0 to 1, with higher values indicating greater heat gain from direct sunlight entering your home through the window glass. The lower number, generally speaking, means less heat enters your home during warmer months and more heat escapes during colder months – leading to improved energy efficiency for your home overall.
Professional siding and window replacement contractors understand how the SHGC rating helps determine which type of windows will be best suited for specific climate conditions. It also provides insight into potential savings due to reduced cooling costs in summer months and increased heating costs during the winter months.
Common SHGC Ratings
When looking at replacement windows, you’ll notice three categories with different performance levels – low-rating (0-0.30), medium-rating (0-0.50), and high-rating (>0.60).
Low Rating
Windows with low SHGC ratings provide better insulation properties than those with higher ratings. This allows for less infiltration meaning less outside air coming inside, thus reducing energy consumption associated with heating and cooling systems.
Medium Rating
These are typically the most popular choice among homeowners as they offer a good balance between heat absorption and energy savings while allowing some natural light to come into your home.
High Rating
If you live in an area with scorching summers or cold winters, these windows may be best suited for you as their SHGC rating will help keep the indoor temperature consistent throughout the year.
If you’re considering replacing the windows on your home, be sure to take the SHGC into account. This rating will help you determine which window best suits your specific climate conditions. For help choosing the right windows for your home, contact an Angie’s List Certified company, Twin Cities Siding and Roofing. We also offer siding installation for homeowners in St. Paul and Minnesota. Call (651) 967-0873 for a consultation today, or you can complete our convenient online form to get started.
