Mcdonald O C Co Inc

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O.C. McDonald Company has been the Bay Area's 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.

O.C. McDonald at work
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