In 1972 Glessner Alarm & Communications began in the basement of the Glessner's home. From the start, the family focused on the grass roots approach of exceeding expectations and personalized accessibility with total commitment to service. As a family-owned business, we take great personal pride in what our company has accomplished. However, we never forget our humble beginnings and the philosophy
that has made Glessner a company that thousands of customers and businesses have come to rely on for their security, communication system and IT needs. Glessner services thousands of households in Maryland, Virginia, West Virginia, Pennsylvania and the District of Columbia, earning it the reputation as one of the most highly respected security and communications companies in the region. We service such clients as the United States Army, United States ATF, United States Coast Guard, National Park Service, United States Department of Energy, Air National Guard, Department of Social Services, MCI/MCTC and Federal Aviation Administration. We are bonded and insured. Glessner provides every customer with piece of mind through our products, service, and our people. We offer everyone complete satisfaction with 100% money back guarantee, total reliability and absolute confidentiality, professionally trained technicians available 24 hours a day, 7 days a week, real people answering telephones 24 hours a day, in house engineers for designing and customizing complex systems, ability to integrate multiple systems, and fully stocked service vehicles and in house inventory.
