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Increase Energy Efficiency and Comfort with the Best Replacement Windows

Long Windows is the exclusive provider of the “Quantum2″ window in the Washington, DC, Maryland and Virginia areas. If you’re serious about getting beautiful replacement windows that are also energy-efficient, the “Quantum2″ from Long Windows is the perfect fit for your home.

Long Windows come in a wide variety of styles to enhance the look of your home. Here are some of the top reasons why clients choose Long Windows over the competitors:

When you buy replacement windows from Long Windows you will get the highest quality product and superior workmanship with the installation. When you factor in the quality into replacement window cost you will see that Long Windows are quite a deal. This is why Long Windows are the best replacement windows to buy.

Block 99.7% of Harmful Ultraviolet Light Rays

Ultraviolet light is responsible for sunburn and some kinds of skin cancer, in addition to causing blinds, upholstery and rugs to discolor and fade. When you install replacement windows from Long Windows they block 99.7% of UV rays, to help keep your family and your furniture comfortable and safe.
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Reduce Outside Noise

Standard single- and dual-pane windows have very low Sound Transmission Class (STC) ratings which allow a lot of outside noise to infiltrate your home. The best replacement windows from Long Windows block most of the outside noise – providing a much more peaceful home environment.
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Residential Replacement Windows Enhance Your Family’s Safety and Security

Keep your family safe. Long Windows feature steel locks that are recessed into the window sash making them extremely break-in resistant – unlike many competitors’ vinyl locks, which are screwed in from the top and are easy to break into.
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Home Replacement Windows Improve Your Home’s Appearance

Long Windows come in a wide variety of classic and modern styles to complement your home. Our consultants will measure your windows and discuss design options with you. Then we’ll custom-order and install home replacement windows specifically for you.
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The Best Replacement Windows Virtually Eliminate Maintenance

Long Windows are impervious to rot, rust, corrosion, blistering, flaking and infestation by termites and other insects. They will never need to be scraped, sanded, stained or painted. Ever.

Open and Close Your Windows Easily

Instead of springs, strings, wires or residential grade balancers that require ongoing service or maintenance, Long Windows employ a Commercial Grade Constant Force Balance System. This allows you to open or shut them with minimal effort.

Clean Your New Windows with Ease

When you buy replacement windows from Long Windows they are as practical as they are beautiful; our “tilt in” system is unique in that it securely positions each replacement window for easy cleaning.

Take Advantage of One of the 100 Greatest Inventions of the Last Millennium

Popular Science magazine’s Millennium Year Special Edition included the technology in Long Windows as one of their top 100 inventions of the past 1,000 years. This advancement allows ultimate in-home comfort.

Enjoy a Lifetime Warranty

The Long Windows Lifetime No-Nonsense Warranty covers parts and labor on every aspect of the replacement window cost including glass, moisture seal, frame and balance system. If you ever need a service for your windows, just call us; we’ll repair or replace them at no cost to you.

Request a free, no obligation in-home estimate for replacement windows in Maryland, Virginia or Washington DC today or call us at 1-800-417-LONG (5664).

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Take a look at these testimonials about Long replacement windows from your neighbors
  • What does the Kursch family of Washington DC like about their replacement windows from Long Windows?
  • Listen to the Blooms talk about getting replacement windows in Fairfax Station, VA
  • Let the Johnsons of Annapolis, MD tell you about their replacement windows.
  • The Whitcrafts would recommend Long Windows replacement windows for their Beltsville, MD home.
  • Why did the McDermots turn to Long Windows for replacement windows in their Landsdowne, MD home? Listen to their recommendation.