United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout Northern California. Our clients include the largest general contractors, developers, owners, and property managers within the Bay Area. We consistently rank within the top 5 mechanical contractors within the region in annual revenue, and are proud to have played a key role in some of the area’s most high-profile and technically demanding projects.

Founded in 2003 by Tom Sosine and Jon Gundersen, United Mechanical was built on the philosophy that there is no client more important than you, and no project more important than yours. Therefore, we treat every new project as an important opportunity to build a lasting relationship, as reliable and durable as our work. To that end, United Mechanical is continually investing in and developing the top talent and resources in the industry, in order to deliver best-in-class project management, design/engineering, fabrication, installation, and maintenance services. You can depend on United Mechanical to be your trusted partner for the complete life cycle of your HVAC and Plumbing systems.