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Are You Looking for Energy-Efficient Windows?

Today, manufacturers of replacement windows and exterior doors give a lot of emphasis on energy-efficiency. In fact, it’s not uncommon to hear that they will often spend considerable funds on researching and developing new ways to make their products even more environmentally friendly. One of the many modern innovations of window and door makers is the use of low-E coatings on their panes.

Let our energy consultants at Renewal by Andersen® of Des Moines show you some clever ways you can take advantage of low-E window pane glazing as well as the seasonal changes in the position of the sun to further improve your home’s efficiency and save a little bit on your heating and cooling.

What is Low-E Glass?

Low-E coating allows sheets of glass to let natural sunlight into your home, leaving the heat out. You can find its use in many patio doors, replacement windows, and other exterior products. Its main advantage is in the saving you get on your air conditioning bill. Renewal by Andersen® of Des Moines uses our own exclusive High-Performance™ Low-E4® that has even better efficiency ratings than other comparable glazing.

Heat Gain in Winter

Depending on your location, the sun rises and sets on pretty much predictable directions. You can take advantage of this consistency by planning out your window and door placement to direct the sun’s heat and light in places you want to heat up during the day. This can help reduce heating costs during the colder months.

Heat Gain in Summer

The opposite is true for summer months. Use Low-E4 glass French doors and window products on areas of your home that get direct heat from the sun during most hours of the day. Doing so can help take a load off your air conditioner and ease up your expenses by a bit.At Renewal by Andersen of Des Moines, you can get superior and energy efficient replacement windows all year-round. Give us a call at (515) 209-3000 or fill out our contact form to schedule an in-home design consultation and request a free estimate today. We serve Des Moines, IA.


"I received information and estimates from both Pella and Andersen. There was no contest between the two. Dave Steffes and everyone I had contact with were very professional and helpful. The quality and cost exceeded what Pella had to offer. I am very pleased with my choice."

Barb W. - Ames, IA
July 2014

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