Welcome to Clark Trombley Randers

Clark Trombley Randers (CTR) is a mechanical and electrical consulting engineering firm established in 1961 in Lansing, Michigan with offices now in Lansing and Grand Rapids. We offer a host of mechanical and electrical and engineering management services with professional and technical support.

Whether your needs include trouble-shooting existing systems, the design of new facilities, or the development and implementation of a total facility “master plan," we have the experience and commitment to provide you with superior service.

CTR works with business owners to design and document HVAC, mechanical, fire protection, power distribution, lighting, communications, life safety and energy management systems for new and renovated facilities. We emphasize coordination and the interface of architectural and engineering disciplines. Our experience includes projects for educational, retail, industrial, health care, and commercial facilities.


"Church projects happen at infrequent intervals and are important to the congregation as well as the building committee. CTR was great in the explanation of various selections that met our needs and our budget. There was no one-size-fits-all design. They played an active role in the early conceptual design process."
Mark Voss,Judson Memorial Baptist Church