About O.C. McDonald Co., Inc.
O.C. McDonald Co., Inc., a distinguished mechanical contractor based in San Jose, California, has been a cornerstone of the Silicon Valley's construction and building services landscape since its inception in 1906. With over a century of dedicated service, the company prides itself on blending "innovative technology with old-fashioned values." Their mission is to provide comprehensive, single-source solutions for both commercial and residential clients, ensuring a streamlined process that minimizes complications and optimizes costs. Serving the greater Silicon Valley, O.C. McDonald offers a wide array of expertise, specializing in HVAC, plumbing, process piping, and advanced building automation and direct digital control systems. Their enduring commitment to quality and customer satisfaction has cemented their reputation as a trusted partner for a diverse clientele, including prominent organizations within the technology, healthcare, and government sectors.
Key Services
- Commercial HVAC Design and Installation
- Residential Heating and Cooling Services
- Plumbing Services
- Process Piping Installation
- Direct Digital Control (DDC) Systems
- Building Automation Systems (BAS)
- Commercial New Construction
- Commercial Retrofit Projects
- 24/7 Emergency Service
- Preventative Maintenance Programs
Why Choose O.C. McDonald Co., Inc.?
With an impressive legacy spanning over 115 years, O.C. McDonald Co., Inc. stands out in the San Jose market for its deep-rooted experience and unwavering commitment to excellence. The company's philosophy of "innovative technology + old-fashioned values" is evident in their approach to every project, whether it's a complex commercial build or a residential comfort system. Their "single-source" management for commercial construction projects ensures seamless execution from design through installation and service, offering clients peace of mind and cost efficiencies. O.C. McDonald’s dedication to client needs is further underscored by their offering of 24-hour emergency service, ensuring that critical issues are addressed promptly by experienced technicians, day or night. This commitment to responsiveness, combined with their extensive technical capabilities in HVAC, plumbing, and advanced control systems, makes them a reliable and preferred choice for a broad spectrum of clients throughout the greater Silicon Valley.
Services Offered
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Reviews
Showing 8 of 20
I have been an OC McDonald customer for a while and have consistently had great, professional service. Most recently, Pablo ...
If you are looking for an incredibly reliable company! Call OC! Debbie and the team have been our family plumbers for 20 plus...
Choosing O.C. McDonald Co for our plumbing and HVAC needs was, without doubt, one of the best decisions we have made for our ...
They are professional and know what they are doing. You might think a union plumber would cost more, but you'd be wrong. Dani...
OCM worker just opened the ceiling box and I showed him the problem where it is (Not he found it). He gave the solution and h...
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At a Glance
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Service Areas
Serves San Jose and surrounding areas
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San Jose HVAC Market Insights
Typical Price Ranges
Seasonal Demand
AC demand peaks during summer months with temperatures regularly exceeding 90°F.
Peak Season: May - September
Tip: Schedule AC maintenance in spring to avoid peak season delays.
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