get a whole
Andersen® Replacement Windows & Doors
SAVE up to 40%
We Install for up to 40% Less Than Our Leading Competitor!
GET A FREE ESTIMATE!
Company for window and door replacements in St. Louis, Kansas City, and surrounding areas.
Beauty, Efficiency and Value all backed by over 23 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. Whether it be a simple replacement door or complex design, Keller opens the door to endless possibilities.
Looking for a St. Louis window replacement company that provides one-stop, start-to-finish service for your window replacement project? We offer you an easy and reliable complete replacement process, all in one place.
GET ALL YOUR WINDOWS REPLACED & SAVE. Take advantage of 18 month / 0% financing and no fake discounts! We stand behind our commitment to consistently offer unbeatable prices without the gimmicks.
Check these stunning photos of our latest window and door installations!
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
"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."
Why Should I Replace My Windows? Because Windows Matter.
Windows help protect you and your home from nature’s harmful elements.
Windows can greatly affect energy efficiency and your heating and cooling bills.
Windows are one of the few things that add beauty to both the inside and the outside of your home.
Replacing your windows with Andersen® can raise the value of your home.
Some REcent Installations
TAKE ADVANTAGE OF OUR NO B.S. PRICING
Our Everyday Prices
Beat Their “Sale” Prices by 20-40% or MORE!
ON NEW WINDOWS
+ ENERGY SAVINGS
GET A FREE ESTIMATE!
1407 Garnet Dr.
O’Fallon, MO. 63366
Areas Served - St. Louis, Chesterfield, Town & Country, Clayton, St. Charles, Wildwood. University City, O'Fallon, and Metro KAnsas City