O. C. McDonald Co. Inc.

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O.C. McDonald Company has been the Bay Areas most respected Mechanical Contractor for over a century, specializing in HVAC, plumbing, process piping, building services, direct digital control systems and building automation systems.We service a wide range of industries including LEED Certified projects, data centers, high tech clean room construction, process tool installation/fit up, heavy industrial piping, commercial, institutional, healthcare and hospitality. In addition, O.C. McDonald leverages its experience to offer the right tools to building owners and managers who want to achieve efficient building management. Mechanical Contractor, Piping Contractor, Plumbing Contractor, HVAC Contractor, Heating Contractor, Leed Certified, Sheet Metal Fabrication, Service and Repair, Maintenance