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About Us

Leading the Industry Since 1939

We serve nearly every type of commercial, industrial and institutional building with the best mechanical contractor services in the Twin Cities metro and across the Midwest.


mechanical contractor tools

24/7 Service

Not Just 9-to-5

With the largest, most skilled HVAC service fleet in the Twin Cities, our expert technicians are always ready to keep your building up and running day or night.


Yale Mechanical HVAC service van
Orbital Welding


Celebrating 75 Years of Making Buildings Work Better

Since 1939 we’ve built a reputation for upfront pricing, greater accountability, timely completion and unsurpassed quality.


Yale Mechanical Never Leaves You Out in the Cold

We always put our clients first with fast 24-hour emergency service and flexible service agreements.

HVAC rooftop Units


Trust Yale to Get it Done and Done Right

Our team of experienced mechanical contractors, design-build engineers, HVAC technicians and Millwrights handles the most complex projects on time and on budget.

Pioneer Press
“With the age of our building we need servicemen that can think outside the box. Our Yale servicemen have bailed us out more than once with their excellent trouble shooting skills, money saving ideas, and of course great follow through. They are a joy to work with! ” Bruce Jentink, St. Paul Pioneer Press
“Our Yale technicians do an excellent job of communicating our HVAC issues to us and keep us informed of the overall condition of our equipment. ” Daniel Tkach, Kraus Anderson Realty

Ron Gundershaug

Vice President, Service Operations

I oversee a veteran service team committed to superior HVAC service and energy management solutions.

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Chris Siedow

Vice President, Industrial Division

I lead a millwright team that solves Minnesota’s leading manufacturers’ most challenging industrial needs.

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Chris Young

Executive Vice President

I manage project design and construction to ensure cost, quality and scheduling expectations are met.

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