When it’s time to replace the windows and doors in your Austin home, one of the most important features you should prioritize is energy ratings. Energy-efficient ratings on windows and doors signify how much heat and sunlight they will let into your home. Installing energy-efficient window replacements and door replacements can help insulate your home, resulting in greater comfort and reduced heating/cooling bills. Here are some of the key elements of energy efficiency ratings you need to know before investing in new windows and doors.

Why do Energy-Efficiency Ratings Matter?

With so many windows and doors on the market, it can be difficult to find a product you feel confident in. The National Fenestration Rating Council (NFRC) conducts thorough testing to determine how well a product performs at insulating your home. A certified high energy rating means that a product is durable and minimizes energy use.

U-Factor

The U-factor determines how good a product is at preventing heat loss. Look for windows/doors with a low U-factor because they’re better at keeping heat inside and making a room energy efficient. Based on the local climate, Austin homeowners should select materials with a U-factor of .40 or below for optimal energy savings.

Solar Heat Gain Coefficient (SHGC)

The Solar Heat Gain Coefficient (SHGC) will tell you how much sunlight will enter a home and warm a room. Homes in Austin would benefit from lower SHGC ratings because they’ll block out more heat and keep rooms cooler, especially during the summer months. The best SHGC rating for Texas homes is .25 or lower.

Visible Transmittance (VT)

The Visible Transmittance (VT) rating is based on how much visible sunlight comes through a window pane. A high VT rating means that more natural light will enter a room, reducing the need for artificial lighting. Many window manufacturers treat their products with low-E coatings to allow plenty of sunlight in without unwanted heat, glare, or UV rays.

Light-to-Solar Gain (LSG)

Light-to-Solar Gain (LSG) refers to how much light versus how much heat passes through a window. A higher LSG means that a window lets in plenty of sunlight without too much heat. Although this number isn’t always included, it’s a helpful way to gauge the balance between interior lighting and excess heat during warmer months.

Learn More About Energy-Efficient Windows and Doors in Austin

Austin homeowners need windows and doors that perform their best during high, humid temperatures. As a local window and door remodeling contractor, Showroom Windows & Doors can guide you in finding the best solutions for your home. 

With over a decade of experience, we also offer high-quality materials that improve the comfort, appearance, and efficiency of your property. Call today to schedule a free, personalized consultation!