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Long Windows: Find the perfect windows for your home

We are the Mid-Atlantic’s window replacement and window installation experts. Long Windows is the exclusive provider of Quantum2 Heat Mirror® windows for your Washington, D.C., Maryland, Northern Virginia or West Virginia home. Now serving Boston, Mass. and the New England region.

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    Long Windows® Options and Showcase

    What should every homeowner researching new windows know?

    Long Windows - Options

    The basics of window style. Your replacement windows should provide outstanding energy efficiency, beauty and durability. Quantum2 Heat Mirror windows from Long Windows check all of these boxes — but what kind of window style should you consider?

    The ABCs of new window energy efficiency.

    Quantum2 Heat Mirror windows from Long Windows are among the most energy-efficient windows on the market today. How, you may wonder, is energy efficiency measured?

    R Value: Measures a window’s thermal insulation. R value tells you if a window will keep your home cool in the summer and warm in the winter. Higher R values are preferred. Long Windows’ Heat Mirror windows have industry-leading R values between 5.6 and 7.1.

    U Factor: Measures how well your windows trap heat inside your home. Lower U factor values are preferred. Long Windows’ Heat Mirror windows have an industry-leading U Factor of .13.

    Solar Heat Gain Coefficient (SHGC): Measures how well your windows block solar heat. Lower SHGC values are preferred. Long Windows’ Heat Mirror windows have an industry-leading SHGC of .27.

    UV Transmission: Measures the window’s ability to block UV light. Long Windows’ Heat Mirror windows have an industry-leading .46 rating.

    The importance of home security.

    Windows are an attractive entry point for burglars. Quantum2 Heat Mirror windows and Long Windows’ powerful window installation materials help prevent unwelcome guests.

    Long Windows

    We build Trust and Peace of Mind into every Long Window.

    New windows are a big investment — trust your window replacement project to the Mid-Atlantic region’s home improvement experts.

    Long Windows, a member of the Long Home Products® family of brands, is the exclusive provider of Quantum2 Heat Mirror windows in the Washington, D.C. metro area. We are also proud to offer our high-quality windows in the Boston, Mass. and New England metro regions.

    We offer the highest-quality vinyl replacement window installation materials because we believe you should have an affordable, long-lasting return on your investment. We treat you like a member of our family because we believe that’s what you deserve.

    A no-nonsense warranty on your new windows.

    All Long Windows customers also get our no-nonsense lifetime warranty on labor and materials. If you ever have a problem with your new windows or the window installation, we will make the situation right because we believe in 100% customer satisfaction. Contact us today.

    Need help paying for your beautiful new windows? We also offer worry-free financing — we’re happy to work with you to find an affordable solution. Learn more now.

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      Get educated: Learning more about new window replacement and window installation.

      Ready for new windows? Here’s what Long Windows has to offer.

      • Window Options and Showcase
        Long Windows offers double hung windows, casement windows, awning windows, hopper windows, slider windows, bow and bay windows, picture windows, garden windows and specialty windows in a variety of interior and exterior color options and grille designs. See what Long Windows can do for your home.

      • Window Benefits and Specifications
        Protection from harmful UV rays, noise pollution and potential intruders — Long Windows can make your home safer and more comfortable. Learn more about energy-efficient windows from a family business with over 7 decades of home improvement experience.

      • Window Testimonials
        Homeowners throughout the Washington, D.C., Maryland, Northern Virginia and West Virginia regions enjoy the unique benefits provided by Long Windows. We are proud to now serve Boston, Mass. and the New England area, as well. See some of our recent window work and learn how people just like you enjoy the view provided by Long Windows.

      Let's talk about windows.

      If it's time to replace your windows, we should talk today. We look forward to protecting your family and your home.

      *Subject to credit approval. Interest is billed during the promotional period but all interest is waived if the purchase amount is paid in full within 12 months. There are no required minimum monthly payments during the promotional period.  Financing for GreenSky® consumer loan programs is provided by federally insured, equal opportunity lender banks. NMLS #1416362

      By submitting a form, I authorize Long Home Products to contact me with information about its products and services via, mail, email, phone, and/or text at the contact information provided, even if I am on the national or local do not call list. Long Home products may use automated telephone technology to initiate calls to its customers.