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    Window Replacement in O Fallon, MO

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    Window Replacement Projects in O Fallon, MO

    48 Window Replacement projects completed with The Home Depot in the last 3 years

    Cost EstimateBrand
    Number of Windows
    Lowest Cost
    $659
    Average Cost$1,340
    Highest Cost
    $5,593
    Home Depot Pros Delivering Windows
    What factors will affect your price?
    • Features designed to boost energy efficiency and reduce heat transfer and noise
    • The durability and performance of the window frame material (vinyl, fiberglass, wood, etc.)
    • Window assortment and features offered by different brands
    • The level of customization of window style, size, color and grid pattern

    Customer Reviews in O Fallon

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    79%
    Of customers recommend Window Replacement
    1-5 of 53 verified reviews
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    May 14, 2026

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    Couldn?t be more satisfied. It was excellent service from the measuring, ordering and install. I would definitely use them again and recommend them to my friends.

    - Jp

    O Fallon, MOundefined, 63366

    Recommend this service

    May 14, 2026

    O Fallon, MOundefined, 63366

    April 9, 2026

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    I had problems with Patrick who came and installed the blinds. He explained everything, he was efficient, thoughtful. What we found after installing is the blinds in our bathroom I believe was not measured correctly and there is a little gap. Also bows out on the one side.

    - DJ

    O Fallon, MO, 63366

    Recommend this service

    April 9, 2026

    O Fallon, MO, 63366

    August 21, 2025

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    Very good

    - HomeDepotCustomer

    O Fallon, MO, 63366

    Recommend this service

    August 21, 2025

    O Fallon, MO, 63366

    June 8, 2025

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    Great experience and I love the blinds! They are perfect!!

    - HomeDepotCustomer

    O Fallon, MO, 63366

    Recommend this service

    June 8, 2025

    O Fallon, MO, 63366

    April 4, 2025

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    Mr Patrick was extremely nice. He did an awesome job with the install of my shutters. I?m am extremely satisfied with him and his work. He completed the install as promise and in a timely manner. I would highly recommend! Thank you!

    - Cynt

    O Fallon, MO, 63366

    Recommend this service

    April 4, 2025

    O Fallon, MO, 63366

    Projects Completed In O Fallon

    48 Window Replacement projects completed with The Home Depot.

    • Date: 9/6/2026
    • Project Cost: $15,617
    • Zip Code: 63366
    • City: O Fallon
    • Brands: Andersen Windows
    • Product Description: Andersen 100 Windows
    • Number of Windows: 18
    • Window Sizes: 32"w x 39"h, 24"w x 61"h, 67"w x 61"h, 58"w x 61"h, 76"w x 65"h, 40"w x 37"h, 28"w x 61"h, 36"w x 64"h
    • Color & Finishes: White
    • Rooms: Kitchen, Office, Attic, Bedroom, Basement, Family
    • Date: 9/6/2026
    • Project Cost: $14,731
    • Zip Code: 63366
    • City: O Fallon
    • Brands: Simonton
    • Product Description: 6500/6100 Series Windows
    • Number of Windows: 15
    • Window Sizes: 28"w x 47"h, 34"w x 38"h, 24"w x 36"h, 32"w x 48"h, 34"w x 58"h
    • Color & Finishes: White
    • Rooms: Office, Kitchen, Bathroom, Bed2, Living, Bed1, Family
    • Date: 9/6/2026
    • Project Cost: $3,310
    • Zip Code: 63366
    • City: O Fallon
    • Brands: Simonton
    • Product Description: 6500/6100 Series Windows
    • Number of Windows: 4
    • Window Sizes: 30"w x 17"h
    • Color & Finishes: White
    • Rooms: Basement
    • Window Attributes: Argon
    • Date: 9/6/2026
    • Project Cost: $7,059
    • Zip Code: 63366
    • City: O Fallon
    • Brands: Simonton
    • Product Description: 6500/6100 Series Windows
    • Number of Windows: 2
    • Window Sizes: 71"w x 60"h, 71.25"w x 79.25"h
    • Color & Finishes: White
    • Rooms: Kitchen, Living
    • Window Attributes: Argon
    • Date: 9/6/2026
    • Project Cost: $3,890
    • Zip Code: 63366
    • City: O Fallon
    • Brands: Andersen Windows
    • Product Description: Andersen 100 Windows
    • Number of Windows: 2
    • Window Sizes: 34"w x 20"h, 65"w x 49"h
    • Color & Finishes: White
    • Rooms: Entry
    • Date: 10/9/2024
    • Project Cost: $1,704
    • Zip Code: 63366
    • City: O Fallon
    • Brands: Andersen Windows
    • Product Description: Andersen 100 Windows
    • Number of Windows: 1
    • Window Sizes: 22"w x 64"h
    • Color & Finishes: White
    • Rooms: Kitchen
    More Projects

    Frequently Asked Questions

    Which window and door brands do you install?
    We install high-quality and energy-efficient windows and doors throughout Missorui from industry-leading brands, including Andersen, Jeld-Wen, and Simonton.
    What happens during my free in-home consultation with The Home Depot?
    During your free window replacement in-home consultation, a window installation specialist from The Home Depot will take professional measurements, show you window samples from industry-leading brands, and quote your individual project. We'll be able to calculate your potential energy savings and the increased home value you can expect from your new windows. The specialist will also help you envision different window options in your home with our innovative 3D digital design tool.
    How can I prepare for an in-home consultation for window replacement?
    Before your in-home window installation consultation, please secure your pets while making the area around your windows clean and accessible so we can take accurate measurements.
    How do I know if I need new windows?
    Windows typically last for 20–25 years. Check for everything from a cracked or peeling window exterior to drafts and frequent condensation. Our licensed O Fallon contractors can inspect your windows for signs of wear and tear.
    If I replace my windows, will my heating and cooling costs go down?
    Replacing your windows will lower heating and cooling costs. The Home Depot team is here to help you maximize energy savings with modern, high-quality window options, including low-E4, dual-pane glass, and triple-pane glass with gas insulation.
    How do I maintain my new windows?
    Use a soft cloth to wipe the window frame and remove loose debris. Clean the windowpane with a household glass cleaner, wiping thoroughly to prevent streaks. Use a damp cloth to remove dust and dirt from the window screens. You can also remove the screens and wash them in warm, soapy water.
    How long does it take to replace my windows?
    The timing of a window replacement job depends on the number of windows you want to install.

    Window Replacement in O Fallon, MO

    Trust Home Services at The Home Depot for expert window replacement in O Fallon, Missorui. Our local experts have been upgrading your neighbors' homes and can help you complete your window project. The Home Depot has two window installation experts who tackle projects in your town. Our contractors are certified and experienced in window installation in the St. Charles area. On average, our contractors have over 17 years of experience and have some of the highest ratings in the business. Trust the dedicated and knowledgeable team at The Home Depot to arrive on time and keep you informed every step of the way.

    two shaped windows with white frames in a living room


    Window Replacement Steps


    We make it simple to start your project!
    • Step 1: During your free in-home or virtual window replacement consultation, one of our local specialists will inspect your existing windows, gather measurements of the area, and learn more about your unique needs, wants, and budget.
    • Step 2: A contractor from The Home Depot will give you a custom estimate for your project, complete with financing options.
    • Step 3: When you're ready to move forward with your project, we'll order your new windows, bill you for the cost, and schedule your installation.
    • Step 4: After we replace your windows, our contractors will inspect them, review product and service warranties, and remove your old windows, including any debris.


    You might wonder if your current windows can be repaired or if it's time to replace them. The certified pros at The Home Depot can help you make the best decision for your unique project and home. Our knowledgeable and reliable contractors are experts in window screen repair, glass replacement, and more. Plus, our Home Services team specializes in home window replacement.

    Window Replacement Benefits


    Replacing your windows can benefit your home in many ways, such as insulating your house from outside heat and cold, and improving your curb appeal. We install windows with high Energy Star ratings that meet rigid standards for energy efficiency. This may help reduce your energy costs, improve your home's comfort, and reduce your carbon footprint. With materials such as aluminum, vinyl, and wood, we've got just the right look and feel for your unique home.

    Window Types


    We're proud to offer many window options that match the local architecture in O Fallon and conform to the latest trends in window styles. If you're ready for new windows, consider picture window replacement. Picture windows do not open but allow natural light to enter. We also specialize in bay windows featuring a large picture window in the middle with two narrow windows on each side. With 8 other window styles to choose from, The Home Depot is here to help you make the best selection for your home.

    partially open awning windowbay window in front of a kitchen tablebow windows from the exterior of homeopen casement window with trees outsideopen double hung windowa garden window holding vases and plantspicture window on a gray modern housesliding window in a laundry room


    Schedule Your Window Consultation


    When you're ready to begin, let us do the work! Reach out to our window installation pros and make your dream home a reality. Request a free in-home or virtual consultation, and our team will guide you through the process from start to finish. See you soon, O Fallon!



    Warranty Offerings


    At The Home Depot, we back every window replacement project with a lifetime craftsmanship warranty. We also offer a double-lifetime warranty on window hardware and screens, and a lifetime warranty on accidental glass breakage. With warranties backed by The Home Depot, you always have peace of mind. Ask your contractor or store associate for details.

    Window Finance Options


    Are you ready to complete a home improvement project within your budget? The Home Depot is here to help. We're proud to offer a wide range of affordable financing options, including The Home Depot Consumer Credit Card and The Home Depot Project Loan.

    replacement window installation vinyl window replacement a white stucco home with wooden black framed windows

    Stores Near O Fallon

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