Mathisen Co. provides new and retrofit installations of all mechanical systems. As a full service mechanical contracting organization we specialize in heating, ventilation, air conditioning, plumbing, process piping and building automation systems. In our 27 years of service primarily in Southeastern Michigan, we have evolved into a market leader in construction and renovation. Our work is concentrated in the Commercial, Industrial and Institutional markets.

Since our beginning in 1972 our success can be attributed to our innovative approach to providing solutions to our customers, proven by the loyalty in our client base and employee tenure.

The Engineering Department offers computerized engineering design along with state of the art 3D CAD software that is committed to the highest quality standards and attention to details. With this continuing dedication to total project responsibility our customers have confidence in our ability to complete the most difficult projects with quality, within their budgets and on or ahead of schedule.