Expert Window Replacement in Charleston SC

Why US?

Whether you are searching for an upgrade to your home’s curb appeal or hoping to reduce your energy bills, vinyl windows from East Coast Windows are the answer for your Charleston Charleston window replacement needs. They are longer lasting, visually appealing, and are excellent temperature insulators, meaning your home stays comfortable regardless of how the weather is behaving outside.

Energy Star
Lifetime Warranty
Energy Star Partner


Replacing the windows in your home is one of the most rewarding home remodeling projects your can undertake. New windows in your home or business saves money and improves curb appeal.

Lowcountry homeowners and business owners in Charleston, SC know how important their windows are to their homes and businesses. There are many reasons your may decide to replace the windows. You may have old, inefficient windows that are drafty and difficult to operate. Perhaps you want windows that are easier to clean or require little to no maintenance. Perhaps it's time to update the look of your home with a new style of window.

You may be flipping a house and want to modernize the look and efficiency of the home to wow homebuyers. Whatever your reason for getting new windows, East Coast Windows can boost your home’s curb appeal, and significantly decrease your energy bills as well as boost your property value.

Our Services

Home Window Replacement


Window Replacement

Window Replacement

Windows Installation

Hurricane Impact Windows

Window Brands

Residential Window Installation

Mezzo Alside

It's the ultimate energy-efficient window. Elegant, sleek style mixed with take-charge strength that meets future ENERGY STAR® window compliance today. The aesthetics are everything you want in a replacement window, and the performance power is cutting-edge. Strong, durable and weather tight, with custom beauty, easy upkeep and excellent value. Mezzo vinyl windows are made for you.

Atrium Windows

Atrium high-quality new construction and replacement windows are exceptionally crafted to be durable, easy to maintain and enhance the beauty of your home.

Atrium Windows and Doors
Simonton Windows and Doors

Simonton Windows

Recognized by Consumer Reports as one of the most leading and innovative products in the industry, and also a long-standing ENERGY STAR® partner, Simonton windows will transform your home from the inside, out. Shop our vinyl replacement window styles, grid style and color options or find a pro for an in-home consultation.


Contact us to schedule your free window replacement estimate. We look forward to serving you!

    Areas we serve

    No matter what the reason, upgrading your windows with East Coast Windows is always a smart decision. Call the experts in Charleston window replacement and schedule your free in-home consultation today.

    We're based in Charleston, SC and serve the following areas:

    • Downtown
    • Kiawah Island
    • Seabrook Island
    • Isle of Palms
    • Johns Island
    • James Island
    • Charleston
    • West Ashley
    • Moncks Corner
    • Mount Pleasant
    • Goose Creek
    • Summerville
    • Hanahan
    • North Charleston and beyond.