Award Winning Window Replacement Contractor Specialist

Lifetime Glass Breakage Warranty and Extended Manufacturer Warranty

Financing and Special Savings Available for Your Replacement Windows

Hammer is a window replacement contractor that takes pride in protecting your family and home with the best in replacement window products.

We cut no corners in delivering the last energy efficient windows you will ever need. Each of our product consultants and installation teams are professionally trained and credentialed by our partner window manufacturer. We carry all necessary comprehensive general liability insurance and workman’s compensation insurance to give you the peace of mind that you deserve. Ask also about our industry leading workmanship and glass breakage warrantybecause if your window installer only believes their workmanship is good for 1 to 5 years, why would you trust your entire home to them!

Our teams proudly installs Earthwise Group Slocomb vinyl replacement windows in Washington DC, Maryland, and Virginia, including Arlington County, Fairfax County, Loudoun County, Alexandria, Fairfax, Falls Church, Montgomery County, Howard County, Frederick County, and Prince George’s County.

Ask your consultant about which Energy Star rated replacement windows would be the best for your home.

Best replacement windows are made in the USA, choose the right window contractor
Limited Lifetime warranty for the best replacement window in Maryland, DC, VA
Energy Star certified best energy efficient replacement windows
Keystone Certified best energy star rated replacement windows

Unbeatable Workmanship Warranty

Multiple Customer Service Awards

Professional and Certified Installers

Good Housekeeping Seal Warranty

Schedule Your Free Quote Today!

Completely Free, No Obligation Quote

Your professional certified product specialist will guide you through the best options for your home remodeling project. At Hammer, we honor our price for a full year with no obligation to buy.

Accurate Turn-Key Pricing

We use the latest technology and expert training to get your project’s price right the first time. Within a short consultation, your Hammer product specialist will be able to provide you a complete and guaranteed price.

Integrity & Respect

With over 7 local and national customer services excellence awards, we truly care about every one of our clients. Have confidence that you are working with a company that stands treating our.
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We Proudly Serve Homes in DC Metro

NW Washington DC

Potomac, Bethesda, & Chevy Chase

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Kitchens

American University Park, Washington, DC
Cathedral Heights, Washington, DC
Chevy Chase, Washington, DC
Cleveland Park, Washington, DC
Forest Hills, Washington, DC
Foxhall, Washington, DC
Friendship Heights, Washington, DC
Georgetown, Washington, DC
Glover Park, Washington, DC
Kent, Washington, DC
Palisades, Washington, DC
Woodley Park, Washington, DC
Washington, DC 20007
Washington, DC 20008
Washington, DC 20015
Washington, DC 20016
Bethesda, MD 20814
Bethesda, MD 20816
Bethesda, MD 20817
Bethesda, MD 20889
Bethesda, MD 20892
Bethesda, MD 20894
Cabin John, MD 20818
Chevy Chase, MD 20815
Garrett Park, MD 20896
Glen Echo, MD 20812
Kensington, MD 20895
North Bethesda, MD 20852
North Potomac, MD 20878
Potomac, MD 20854

Bathrooms

American University Park, Washington, DC
Cathedral Heights, Washington, DC
Chevy Chase, Washington, DC
Cleveland Park, Washington, DC
Forest Hills, Washington, DC
Foxhall, Washington, DC
Friendship Heights, Washington, DC
Georgetown, Washington, DC
Glover Park, Washington, DC
Kent, Washington, DC
Palisades, Washington, DC
Woodley Park, Washington, DC
Washington, DC 20007
Washington, DC 20008
Washington, DC 20015
Washington, DC 20016
Bethesda, MD 20814
Bethesda, MD 20816
Bethesda, MD 20817
Bethesda, MD 20889
Bethesda, MD 20892
Bethesda, MD 20894
Cabin John, MD 20818
Chevy Chase, MD 20815
Garrett Park, MD 20896
Glen Echo, MD 20812
Kensington, MD 20895
North Bethesda, MD 20852
North Potomac, MD 20878
Potomac, MD 20854

Additions

American University Park, Washington, DC
Cathedral Heights, Washington, DC
Chevy Chase, Washington, DC
Cleveland Park, Washington, DC
Forest Hills, Washington, DC
Foxhall, Washington, DC
Friendship Heights, Washington, DC
Georgetown, Washington, DC
Glover Park, Washington, DC
Kent, Washington, DC
Palisades, Washington, DC
Woodley Park, Washington, DC
Washington, DC 20007
Washington, DC 20008
Washington, DC 20015
Washington, DC 20016
Bethesda, MD 20814
Bethesda, MD 20816
Bethesda, MD 20817
Bethesda, MD 20889
Bethesda, MD 20892
Bethesda, MD 20894
Cabin John, MD 20818
Chevy Chase, MD 20815
Garrett Park, MD 20896
Glen Echo, MD 20812
Kensington, MD 20895
North Bethesda, MD 20852
North Potomac, MD 20878
Potomac, MD 20854

Remodeling

American University Park, Washington, DC
Cathedral Heights, Washington, DC
Chevy Chase, Washington, DC
Cleveland Park, Washington, DC
Forest Hills, Washington, DC
Foxhall, Washington, DC
Friendship Heights, Washington, DC
Georgetown, Washington, DC
Glover Park, Washington, DC
Kent, Washington, DC
Palisades, Washington, DC
Woodley Park, Washington, DC
Washington, DC 20007
Washington, DC 20008
Washington, DC 20015
Washington, DC 20016
Bethesda, MD 20814
Bethesda, MD 20816
Bethesda, MD 20817
Bethesda, MD 20889
Bethesda, MD 20892
Bethesda, MD 20894
Cabin John, MD 20818
Chevy Chase, MD 20815
Garrett Park, MD 20896
Glen Echo, MD 20812
Kensington, MD 20895
North Bethesda, MD 20852
North Potomac, MD 20878
Potomac, MD 20854

Basements

American University Park, Washington, DC
Cathedral Heights, Washington, DC
Chevy Chase, Washington, DC
Cleveland Park, Washington, DC
Forest Hills, Washington, DC
Foxhall, Washington, DC
Friendship Heights, Washington, DC
Georgetown, Washington, DC
Glover Park, Washington, DC
Kent, Washington, DC
Palisades, Washington, DC
Woodley Park, Washington, DC
Washington, DC 20007
Washington, DC 20008
Washington, DC 20015
Washington, DC 20016
Bethesda, MD 20814
Bethesda, MD 20816
Bethesda, MD 20817
Bethesda, MD 20889
Bethesda, MD 20892
Bethesda, MD 20894
Cabin John, MD 20818
Chevy Chase, MD 20815
Garrett Park, MD 20896
Glen Echo, MD 20812
Kensington, MD 20895
North Bethesda, MD 20852
North Potomac, MD 20878
Potomac, MD 20854