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Features of an ENERGY STAR® Replacement Window

Fact: ENERGY STAR® appliances use 20% to 30% less energy than their counterparts. These appliances will cut down on your electric bills and make your home much more comfortable. Renewal by Andersen® of St. Louis presents the features of ENERGY STAR windows and patio doors.

Features of an ENERGY STAR® Replacement Window

U-Factor

This indicates how well heat flows through a window. The lower the U-factor, the more insulation the window will have. In northern climates, a low U-factor and higher Solar Heat Gain Coefficient (SGHC) will lead to an ENERGY STAR rating. This ensures that homes will be well-insulated and enjoy passive solar heat from the windows.

SHGC 

SGHC measures the solar heat that enters through the window. Lower numbers signify less solar heat entering a home. In southern climates, the smallest U-factor rating is a bit higher, but the SGHC is lower. This reduces the amount of solar heat in the home. That’s why it’s so important to get ENERGY STAR-rated windows for your location. You can get quality windows and sliding patio doors from Renewal by Andersen of St. Louis.

AL

The Air Leakage (AL) rating measures the amount of air entering the frame and joints. A lower AL rating means less air flows through the window. After regional energy efficiency ratings, windows also need a rating for air leakage. It’s necessary for an ENERGY STAR-certification. All windows must have an AL rating of less than 0.3 cubic feet of air for each square foot of window space.

Don’t rely on ENERGY STAR labels alone. Some doors and windows are more efficient, durable and worth the investment than others. Work with a window professional like Renewal by Andersen of St. Louis. We will help you get the best windows that will be a long-term investment for your home.

From premier-quality windows to beautiful French doors, Renewal by Andersen of St. Louis offers high-quality products for your comfort. Call us today at (314) 332-2364 for a free estimate. We serve homeowners in and around St Louis, MO.

Reviews

"The installation crew was very professional and answered what questions I had. And they cleaned up when they were finished. We're very pleased with our windows & patio doors. Highly recommend Renewl by Anderson."

Pamela D
Feb 13, 2023

"Very pleased with installation of six windows and a ProVia entry door. I love the look of the windows and door. I am pleased that my wife is thrilled with the look of the door. She is very pleased that the bronze color fits in well with the color of the brick."

Terry S
Feb 8, 2023

"I just had my Renewal by Andersen windows installed and couldn’t be happier, the entire process went very smoothly. The windows are high quality and look great. But the installers Roy, Zack and Jordan were the stars, they introduced themselves upon arrival walked me thru everything they were going to do and when they finished took me to each window to make sure I was completely satisfied. They were clean and courteous and I would definitely recommend and have them work in my home again."

BOB B
Feb 6, 2023

"Wonderful experience with knowledgeable, competent employees. We had Andersen windows in a previous house & didn’t even consider anything else this time. After replacing our patio door almost two years ago, we replaced all our windows this year. What a difference over builder-grade windows, especially in the really cold temperatures we’ve had this year. Andersen windows may be a little more expensive than other brands, but they are top quality."

Susan S
Jan 31, 2023

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