O'Fallon, MO 63366
Call Us Now! (314) 399-2001
Schedule a FREE In-Home Estimate
Keller Window & Door
O'Fallon, MO 63366
jkeller@kellerwindow.com
(314) 399-2001
Monday - Friday: 8:30 AM - 4:30 PMSaturday - Sunday: Closed
Your Premier Choice for Window and Door Replacements in St. Louis and Nearby Areas
Quality Window Products and Services Just for You

No matter the scope of your window installation project, you can expect quality products and services from our experts.

Learn More Contact Us
Window and Door Replacement Done Right

Making the most of your window or door project is easy with Keller Window & Door.

Learn More Contact Us
The Andersen® Difference

When it comes to quality, you can’t go wrong with Andersen windows and doors.

Learn More Contact Us
Request A Quote

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
    I provide my express consent to Keller Window & Door to contact me via Phone, Email and/or SMS. I understand that my consent is not a requirement for purchase, and I may withdraw my consent at any time.
    Areas We Serve
    Aside from serving O’Fallon, Keller Window & Door also provides quality window and door services in the surrounding areas..
    Learn More
    Gallery
    See for yourself today what we can do for you when you choose Keller Window & Door.
    Learn More
    Financing
    With financing options from Keller, you can rest easy knowing you can get the window and door solutions you want and need exactly without worrying about your budget.
    Learn More

    Keller Window & Door – Your Trusted Partner for Window and Door Enhancements

    Welcome to Keller Window & Door, your local window company with 29 years of dedicated window and door experience. We pride ourselves on our expert window service, comprehensive home window and door consultation, and our commitment to community support, including sponsoring local high school basketball programs. At Keller Window & Door, we understand the importance of having durable, energy-efficient, and beautiful windows and doors in your home. That’s why we offer a wide range of services, including andersen replacement windows, entry door replacement, patio door replacement, and certified window installation.

    Premium Window Installation and Replacement Services

    Our window replacement service is designed for those looking to upgrade their homes with high-quality replacement windows, featuring energy-efficient glass options and premium window frame insulation. We specialize in both affordable window replacement and premium window installation, ensuring that all of our customers receive expertly executed installations, transparent pricing, and the best contemporary or classic window treatments on the market. Our certified Andersen installer status highlights our partnership with one of the leading window manufacturers in the industry, offering you unparalleled quality and performance.

    Door Replacement and Installation Excellence

    Seeking reliable door replacement services? Look no further. Keller Window & Door provides top-tier entry and patio door solutions, including the installation of secure entry doors, and beautiful patio doors from the Frenchwood, Contemporary, and Sliding Patio Doors series. Our comprehensive door installation service covers everything from door frame replacement to the addition of premium door hardware, ensuring that your new door is not only aesthetically pleasing but also weather-resistant and secure.

    Transform Your Home with Our Window and Door Solutions

    Our window and door solutions are catered to those looking to enhance the comfort and appearance of their homes. From energy-efficient windows that save on heating and cooling costs to durable entry doors that offer increased security and curb appeal, we are ready to transform your home. We also offer conversion kits and tilt-in window conversions for a budget-friendly window upgrade. With our extensive window sales experience and integrity pricing for windows, you can expect no-gimmicks pricing and the option for financing to make your window and door enhancements more affordable.

    Why Choose Keller Window & Door?

    Choosing Keller Window & Door means partnering with a trusted window contractor known for its quality window and door services, transparent and affordable pricing, and a deeply rooted history in serving and supporting the community. Our comprehensive financing options, from long-term to short-term financing for windows and doors, ensure that you can embark on your home improvement journey without financial worry. With a dedicated team of window and door replacement experts, we strive to deliver unparalleled home transformations, making us your go-to choice for all window and door needs.

    Contact Us Today

    Ready to upgrade your home with our high-performance glass windows and modern patio doors? Contact Keller Window & Door today for a free window and door consultation. As a premier window contractor and certified Andersen installer, we’re committed to providing you with the perfect window and door solutions to meet your needs and elevate your home’s aesthetics and functionality. Let’s embark on this transformation journey together!

    Read More
    Our Services
    What We Offer
    Keller Window & Door offers dependable services, complementing the quality that Andersen® windows and doors are well-known for.
    Window 5
    Window Replacement
    Window replacement done right–that’s the Keller Window & Door guarantee.
    Door
    Entry Door Replacement
    Your entry door is a great way to make a statement. Make the most of your replacement project with Keller Window & Door.
    Sliding Doors
    Patio Door Replacement
    Seamlessly blend your indoor and outdoor living spaces with a quality patio door replacement from Keller Window & Door.
    Window 7
    Conversion Kits
    If you have older Andersen® windows and wish to turn them into tilt-in units, Keller Window & Door offers conversion kits for an easy upgrade.
    Our Reviews
    What Our Customers Have to Say
    Interested in what we can do for you? Get it straight from our customers today!
    I ordered new windows for my entire house. This was done extremely professionally and I couldn't be happier with the results. Everything was measured and...
    Brad
    We had our old patio door replaced by Keller Window & Door last month (Oct. ‘22), and Wow! What a difference! We absolutely love it!...
    Sean
    I had an excellent experience hiring John and his team to replace our patio door with a sliding glass door and replace all of our...
    Joel
    John Keller and his team did an AMAZING job installing our new Anderson windows on our Sun porch! They were professional, friendly & courteous. John...
    Ed
    In October 2024, we got Andersen replacement windows through Keller Window & Door for our entire house (13 windows) along with one custom window and...
    Tammy
    Read More
    Schedule A FREE In-Home Estimate
    Call (314) 399-2001

      This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
      I provide my express consent to Keller Window & Door to contact me via Phone, Email and/or SMS. I understand that my consent is not a requirement for purchase, and I may withdraw my consent at any time.
      Our Certifications
      To offer our customers the best, we worked hard to meet the standards set by the best brands in the market today.
      Andersen Certified Contractor
      ProVia
      Premier Andersen Certified Contractor
      Request A Quote

        This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
        I provide my express consent to Keller Window & Door to contact me via Phone, Email and/or SMS. I understand that my consent is not a requirement for purchase, and I may withdraw my consent at any time.
        Request A Quote
        Top