Design & Build
Mechanical Engineering
Our Mission
To be an organization that respects, recognizes, and motivates individuals to excel in serving responsible general contractors, owners, architects, and engineers by using a team approach in designing, planning and constructing mechanical HVAC systems in a timely manner, with a commitment to customer service and follow-up.
Founded in 1991 by Helge Theiss-Nyland, Bay City Mechanical is one of the largest and most innovative design & build mechanical engineering firms in California.
Today, Bay City Mechanical Service strives to be the best Mechanical Engineering and HVAC service provider in the industry. We have received numerous industry awards and supplier distinctions from our customers. We believe in our motto, “Because Comfort Matters.” And our goal is to provide the highest quality service to our valued customers every step of the way.
With over 25 years of mechanical engineering and HVAC experience, Bay City Mechanical has the ability to offer a full suite of design & build services to the Bay Area’s leading architects and construction firms. Our expertise includes: HVAC, Commercial Refrigeration, Architectural Sheet Metal, Pipe Fitting, Building Automation, Temperature Controls and Service and maintenance. This allows us to successfully complete many of the largest and most challenging mechanical projects California has to offer. It is our passion, our experience, and our skills that enable Bay City Mechanical construction projects to be completed on time and within budget.