O.C. McDonald — San Jose CA Mechanical Contractor

O.C. McDonald San Jose CA is a long-running mechanical contractor serving residential and commercial clients across Silicon Valley. They provide plumbing, heating and air conditioning, and water heater services. The company offers 24-hour emergency service and a team of experienced technicians and in-house fabricators ready to work on both homes and large buildings.

Business Overview

O.C. McDonald San Jose CA handles work for small homes, apartment buildings, offices, and major industrial projects. Their staff includes service technicians, HVAC specialists, sheet-metal fabricators, and project managers. Emergency repairs are available any time of day or night, seven days a week.

Key Services

Work is grouped to make it easy to find what is needed:

• Plumbing services: plumbing inspection, plumbing repair, plumbing installation or replacement, toilet installation & repair, faucet installation & repair, bathtub and shower repair, sewer installation & repair, drain repair.
• HVAC: HVAC installation or replacement, HVAC system repair, HVAC system maintenance, building automation and direct digital control systems.
• Gas & fixtures: gas line installation and repair, garbage disposal installation.
• Water heaters: water heater installation and water heater repair for tank and tankless systems.

Areas Served

Primary service areas include Fruitdale CA and many neighborhoods across San Jose. They also take on regional commercial projects across the Bay Area and Silicon Valley. Local work often involves older Mission-style and post-war homes as well as new tech campus buildings.

Company History

Founded in 1906 by Oren Charles McDonald, the firm grew from a small local shop into one of the valley's oldest mechanical contractors. Over time they added process piping, sheet-metal fabrication, and building automation. The company runs its own fabrication facilities and uses 3D modeling and digital controls on larger projects.

Leadership

The business is currently led by Jim McDonald, the founder's great grandson. Under his direction the firm keeps a local focus while handling complex commercial and industrial work. The leadership team stays involved with industry groups and local building managers to keep skills current.

Specialties & Highlights

• Experience with LEED projects and data center piping.
• In-house fabrication shop for custom sheet metal and piping.
• Building automation and direct digital control system installation.
• 24/7 emergency response and long-term service contracts.
• Skilled team that works on both historic homes and modern commercial sites.

Why Locals Choose O.C. McDonald

Locals pick O.C. McDonald for steady workmanship and deep local experience. The company blends old-fashioned trade skills with modern tools. Whether the project is a single water heater in a Fruitdale CA home or a multi-story HVAC job for a tech facility, they aim to deliver clear timelines and reliable service.

Contact O.C. McDonald San Jose CA for service inquiries, emergency repairs, or to discuss planned upgrades for plumbing, HVAC, or water heating systems.