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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

"This was one of the best experiences I've ever had with a company. I ordered the windows in November and was told they wouldn't be here until July. That kind of delay the new norm so I wasn't a bit upset with the timeline. I was given an early present when they called to say the windows would be in at the beginning of May. We agreed on the week of May 16th to do the installation, there were 30 windows and a sliding door to install. They arrived promptly on their scheduled install date, and got straight to work. By the end of day one, they had all the upstairs windows complete and their work was incredible. Day two came with more of the same, the crew showed up promptly, got straight to work, and when they left they had every window downstairs installed. The third day they again arrived on-time, and got to work installing the door. The door and windows are perfectly installed. The two lads that did the installation did a phenomenal job, and were friendly to boot. I would give them more business if I had any :) The service I received from the company was great. They kept me abreast of anything that was going on with my order. I appreciate my concierge, Christina, she was good at communicating timelines and getting everything scheduled."

Lane Maxwell
Jun 28, 2022

"The two installers were great! They were polite and hard working and they cleaned up all the outside and inside. It was like they were never here. As for the windows, I love them, not only looks great, they are efficient. Now every window in my home has Renewal by Anderson."

Mark Palsgrove
Jun 23, 2022

"We had the pleasure recently of having Andersen replace all of our windows. From the very first interaction with the office personnel through the completion of the project, they have been nothing but professional. From Brian our sales rep to Christina the appointment scheduler, they were a pleasure to interact with. Installers Keith, John, and Evan were fantastic to work with. They went above and beyond to repair an area which was slightly damaged during the removal of a window...caulked and painted it. They took extra precaution to ensure the floors were covered while working inside and cleaned up each day inside and out. We love the look of our new windows and can't wait to enjoy the savings in utilities they'll provide. Thanks so much Renewal by Andersen!!"

Kevin Corrigan
Jun 15, 2022

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