Long Windows is the exclusive provider of the "Quantum2" window from SeriousWindows™ in the Washington, DC, Maryland and Virginia areas. Replacement window ratings from Long Windows outperform other major brands in terms of R Value and U-Factor, two key scientific measures of energy-efficiency. In fact, they exceed ENERGY STAR® requirements.
Add in the Long Windows Lifetime Warranty, commitment to superior service and legacy of satisfied clients and there's no comparison to other window providers.
When you see how replacement windows compare you can see that Long Windows are your best choice when you live in Maryland, Virginia and Washington DC. Contact us today for a quote. 1-800-417-LONG (5664).