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How Low-E Glass Can Keep You Comfortable All Year Long

Glass windows that are poorly insulated are a leading cause of energy loss in a typical home. When it is cold outside, the heated air inside your home can radiate through the glass to the outside, making your furnace or boiler “kick in” more often. At the same time, chilly outside air can “leak” into your home through an ordinary glass pane – even if they are dual pane windows. During the hot, humid summer months, cool, conditioned air can escape while warm air infiltrates.

That’s what makes Renewal by Andersen’s High Performance™ Low-E4 glass such an important part of your new windows’ energy efficiency. With our High Performance™ Low-E4 installed, your windows become an effective barrier against thermal conductivity and energy loss.

Renewal by Andersen’s High Performance™ Low-E4 glass is 45% more energy efficient in summer and 56% more energy efficient in winter as compared to ordinary dual panel glass.* Sounds good, right? Well those numbers weren’t high enough for Renewal by Andersen, so they started to produce High Performance™ Low-E4 SmartSun™ glass, which is 70% more energy efficient in summer and 45% more energy efficient in winter as compared to ordinary dual panel glass.*

What Makes Glass Low-E?

Low-E glass is a way to control the heat being allowed into and out of your home. Low-E is a specially coated glass that allows light to pass through, but controls the “emissivity” of heat energy. Emissivity is a measurement of how readily a material radiates absorbed energy. The lower the emissivity value, the more energy efficient the material.

By blocking heat-generating ultraviolet light and reflecting heat back to its source, the High Performance™ Low-E4 glass in our Renewal by Andersen windows mean you’ll need less heating or air conditioning to keep your home at a comfortable temperature. High Performance™ Low-E4 makes our windows some of the most energy efficient windows in St. Louis homes.

FREE Estimate on Replacement Windows in St. Louis

Draw inspiration for your window replacement project from a leading local expert on replacement windows and doors – Renewal by Andersen of St. Louis. Call us today at (314) 208-3911 to schedule a FREE in-home estimate.

*Values are based on comparison of Renewal by Andersen double-hung inserted window SHGC to the SHGC for clear dual pane glass non-metal frame default values from the 2006 and 2009 International Energy Conservation Code.

Reviews

"We had a large picture window and two side windows replaced. Everyone from the person who took our order to the installers were top notch. We got exactly what we wanted. Granted, we had to wait a few months, just like you do for everything these days, but we were told that up front. The windows were well worth the wait. We've replaced windows before by going to home maintenance stores. Don't waste your money on those. Our Renewal by Andersen windows look great, they operate like a dream, and are worth every penny. Quality through and through."

C. Roberts Owens | RbA of St. Louis, MO - Maryland Heights

"My new windows look great!! I can feel the difference in my house and my furnace is no longer staying on constantly. My installation crew was polite, tidy and speedy. It couldn't have went better"

D. Holland Schneider | RBA OF ST. LOUIS, MO - MARYLAND HEIGHTS

"The workmen were very professional and did a great job. Cleaned up everything. I am very pleased with the new windows. Beautiful!"

B. Young | RBA OF ST. LOUIS, MO - MARYLAND HEIGHTS

"From start to finish everyone we dealt with were total professionals.. The project process was well communicated, the installers did an excellent job and the windows - I’m so excited about our new windows! They look great. I can’t believe I’m saying this but I am looking forward to cleaning them. And it was obvious immediately that the insulation is vastly better than the old windows. Also, I am just a customer who gets nothing for this endorsement. I just appreciate good service and an excellent product. This company knows how to do it right."

B Stewart | RBA OF ST. LOUIS, MO - MARYLAND HEIGHTS

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