keller window door anderson header 4 - St. Louis Window and Door Company | Replacement Window and Doors by Andersen

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Your Premier St. Louis
Window & Door Company.

Beauty, Efficiency and Value all backed by over 15 years of experience & premier Andersen® Certified Installation, Service and Warranty.

Your Premier
St. Louis
Window & Door Company.

Beauty, Efficiency and Value all backed by over 15 years of experience & premier Andersen® Certified Installation, Service and Warranty.

As a premier St. Louis patio door company, Keller Window & Door is your best choice. Choose from our huge selection of Andersen® patio doors and find the perfect style and function that’s right for you at lower costs than other providers while still getting that same Andersen® quality, durability and Certified Andersen® Installation and warranty you can trust. Whether it be a simple replacement door or complex design, Keller opens the door to endless possibilities.

Keller Window Door013 - St. Louis Window and Door Company | Replacement Window and Doors by Andersen

Windows

Looking for a St. Louis window replacement company that provides one-stop, start-to-finish service for your window replacement project? At up to 40% less than other leading competitors, Keller Window & Door offers you an easy and reliable complete replacement process, all in one place. Choose from a wide selection of sizes, styles, colors, options, and features, all backed by Andersen’s® quality, style, affordability and Certified Andersen® installation and warranty.

Window Installation

Keller Window Door041 1 300x214 - St. Louis Window and Door Company | Replacement Window and Doors by Andersen There are two installation methods for replacing the windows in your home. The comparison below shows the major difference between the two methods. Each installation is different so the information is meant as a general guideline. The style and materials your current windows are made of may dictate the proper installation method as well.

Insert Installation

A good choice if the exterior frame is in good condition
Most common type of replacement
Interior trim remains intact. No paint line concerns
Most appropriate if you have custom window treatments
Slight loss of glass due to “window within a window” concept

Full Frame Installation

Usually necessary when the frame of the old windows is rotted
All interior trim is new
Maximizes the amount of light through a new window
More expensive than insert method due to increased labor and materials.
More insulation between the new frame and the rough opening

Robert- St. Louis, MO

“Keller Window & Door is a fantastic company to do business with. The service I had done was completed quickly and at a fair price. I would definitely recommend this company for window and doors.”

Vern & Steve- St. Louis, MO

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"John Keller gave us exceptional service. He didn't pressure us to buy replacements but gave us a good price to replace 2 rotten sash. Why buy whole windows when the remainder is good? He fulfilled all time estimates and his installation was quick and immaculate! We highly recommend him!"

Audrey- St. Louis, MO

"Keller Windows delivered an excellent product on time. Representatives and workers were courteous and professional. I will definitely use Keller Windows in the future."