Established in 1958 and headquartered in Huntingdon Valley, PA with a satellite office in Philadelphia, PA – Carr & Duff, Inc ... is a leader in the tri-state area for full-service electrical construction. Carr & Duff, Inc is a multi-faceted electrical construction company that can handle any size or type of project with its readily available manpower, equipment and material. Services provided include but are not limited to: Commercial, Industrial, Pharmaceutical, Educational and Healthcare Facilities; Distribution and Transmission; Highway and Traffic Construction; Cable Testing, Splicing and Termination, Low Voltage Specialty Systems; Transit Signal and Communications; Transit Systems; Lighting Systems; Security, Voice, Data and Video Communications Construction; Intelligent Traffic Systems; Transit Traction Power Systems; Preventative Maintenance, Power Quality and Thermal Imaging; and Civil Construction Additionally Carr & Duff, Inc provides 24-hour emergency service, with generators, transformers, switchgear and substations in stock. read more