About Us

Bahnson is a large, national specialty engineering, manufacturing, and mechanical systems contracting firm specializing in ultra-low freezers and environmental chambers.

We provide infrastructure and construction management services to a variety of clients requiring the highest level of guaranteed mechanical system quality, performance, and reliability. Read More.


Bahnson, through its Environmental Specialties (ES) business unit, designs and manufactures a diverse product line of controlled environmental chambers, ultra-low freezers, and modular clean rooms.

Through our Bahnson Mechanical Systems and Intermech business units, we provide complex specialty air and mechanical and HVAC systems for virtually every market segment within the U.S. Read more.



Andy Backus, CEO, is just one of the many people that deliver projects that meet our clients most exacting standards. Meet the rest of the team.