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Limited Warranty


Since the beginning in 1995, Renewal by Andersen has stood behind every product it makes with comprehensive warranties that deliver the peace of mind you expect and deserve. No gimmicks. Instead we provide a realistic warranty that’s based on research and scientific tests on our products.

Limited Warranty

Every Renewal by Andersen replacement window and patio door we install is covered by a fully transferable limited warranty that includes parts, labor and installation services. This includes a 20-year limited warranty for the Fibrex material components of your window, including the frame and sash, warranted to not flake, rust, blister, peel, crack or corrode. The glass is warranted for 20 years to be free from defects from manufacturing, materials and workmanship. Also included, a 10-year limited warranty for parts, hardware and installation. No gimmicks, no tricks. Our locally owned and operated company offers an honest and trustworthy warranty that’s realistic on a product that’s been tested and scientifically proven to last over 20 years.

20 Year Durability Study

How do we know our windows will last over 20 years? We hear about it all the time and have tested them. In 2016, The Andersen Corporation pulled 10 double hung windows out that were originally installed in a Minnesota home 20 years ago and tested them. Their findings? They were just as stable and easy to open as they were 20 years ago. We encourage you to watch the video on their findings.


If you want the comfort of knowing your new windows and doors are protected by a great product warranty and the promise of America’s top window and door manufacturer, the choice is clear: The Steffes Corporation dba/ Renewal by Andersen of Des Moines. We’re locally owned and operated in Valley Junction, West Des Moines. Our small company is growing and expanding… which means all signs are pointing to us being here should you need anything years to come.

Our team is second to none. We encourage you to check out our reviews on Google, Facebook and Angie’s List. You’ll have peace of mind knowing our trusted employee-installers are doing the work. We hope the decision to give our company an opportunity to earn your business is easy.

Contact (515) 274-9700 today for an estimate on Fibrex composite windows, Andersen patio doors and fiberglass entry doors that are built to last.

For a full warranty description please call or stop by our showroom, at 517 Railroad Ave, West Des Moines.


"On 1/30/2014, Ben, Eli, and Nate put in our new Renewal by Andersen of Des Moines picture window in our living room. We love it! It has made an amazing difference in sound, warmth, and BEAUTY! A lot more light too. They were so efficient and neat. Thanks guys! We couldn’t be any more pleased! Mark from Zepher Aluminum recommended your company when he was working on a project where I work."

Julie J. - Menlo, IA
February 2014

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