International Union of Operating Engineers Local 835 is dynamic, multi-trade union representing more than 2,000 skilled stationary engineers who power, protect, and maintain critical infrastructures across commercial buildings, industrial buildings, and service sectors in the greater Philadelphia region.

Local 835 invests in the future of the trade through a comprehensive, four-year Apprenticeship Program featuring structured fall and spring semesters that pair hands-on experience with technical classroom instruction in industrial maintenance, electrical systems, high and low pressure boilers, HVAC, refrigeration, and more.