Serving Traverse City, MI


D & W Mechanical  logo

The spirit of the American entrepreneur and the heart of the humble tradesman

Frank Addis



Plumbing Service Manager, Barry Crabtree, has been in the business since 1978. He oversees services and repairs of residential, commercial, and industrial plumbing and piping applications. He is a licensed Master Plumber and Boiler Installer.


Commercial Design/Build Project Manager, Daniel Hintz, P.E., has more than 20 years of experience in the industry. He does commercial estimation and oversees the company’s design and build projects. Dan holds a B.S. in Mechanical Engineering from Michigan Technological University and is a member of the National Society of Professional Engineers and the American Society of Heating, Refrigeration & Air-Conditioning Engineers.


Commercial/Residential Designer, Jeff Aiken, has more than 20 years of experience in the mechanical contracting business. Jeff’s primary responsibilities are commercial and residential new constructions and renovation designs and sales. Jeff holds a B.S. in Business Administration from Central Michigan University and is a state-licensed Mechanical Contractor.


Residential/Commercial Sales/Designer, Frank Addis, has over 25 years of experience in the plumbing and HVAC industries. Frank’s experience includes service, installation, design, sales, and management of both plumbing and HVAC. Frank is a State of Michigan-licensed Master Plumber and has received numerous certificates of achievement for HVAC design and installation. Frank is a lifetime resident of Northern Michigan and enjoys camping, boating, hunting, and other hands-on projects with his family and friends.


Owner/Principal, Terry Dudley, oversees all divisions and is responsible for the development, marketing, and employee relations. He designs plumbing and HVAC systems, and estimates and manages many of the company’s residential, commercial, and design-build projects. He holds Michigan licenses as a Master Plumber, Mechanical Contractor, and Boiler installer. Terry began his career in mechanical contracting as a Journeyman and later, as a Master Plumber in his family’s plumbing and heating business. He is a past president of the Builders Exchange of Northwest Michigan.


Owner/President, Maurice White, is a chief estimator for commercial and industrial projects, and also acts as a purchaser and manager for the projects he develops. He holds a degree in Banking and Finance from the Northwood Institute in Midland, Michigan. Maurice is also a past president of the Builders Exchange of Northwest Michigan.


Estimator/Project Manager, Jack Ocobock, has been in the contracting business since 1985 and has experience from both sides of the permit. Not only does Jack have experience

working in the field as a licensed plumber, but he also spends his free time serving as a

board member for the Northern Michigan Code Official's Association.


Mr. Ocobock also keeps himself busy working as an inspector and plan reviewer for Grand Traverse County as well as working with D & W Mechanical. He is a licensed Master Plumber and is certified in backflow testing and medical gas brazing.

"Copper Ridge considers D & W more of a “partner” in our development than a subcontractor. They understand that the satisfaction of our tenants and owners is critical to the overall success of Copper Ridge. We value their opinion and experience by including them in the overall design of the building and mechanical systems. They understand that our goal is to make each new building as efficient and cost effective as possible. Their staff exceeds our high level of professionalism when dealing with our tenants and owners."

- Rick Deneweth, Deneweth & Cornillie LLC, Copper Ridge Realty & Grayhawk Development


Call us to speak with our staff