Since its founding in 1949, Whelan Security has remained a family-owned business that provides some of the most innovative programs in the security industry. The company s services are highlighted by its warranty program, which offers a complete money-back guarantee on its services. Whelan Security is ranked in the top one percent of all security companies in North America, based on annual revenue. Its technology includes a personnel-scheduling system and a post-alert confirmation system. In addition to other offices throughout the continental United States, Whelan Security maintains offices in Houston.