In business since 1994, GSW Electric offers professional service, repair and installation for Residential and Commercial customers throughout central Maryland, the Baltimore and Washington D.C. metro areas. As a full-service electrical contractor we offer a wide range of services to homeowners, business owners and property managers. Based in Mount Airy, Maryland, on the border of Carroll, Frederick, Howard and Montgomery counties, we are ideally situated to be your "local electrician" no matter where you are located.