History & Philosophy

C&R was founded in 1950 by two St. Louis area brothers, Clarence & Ralph Siekmann. After a quarter century of success as a residential heating and air conditioning business, the company changed its focus to commercial mechanical engineering and design, and its name to C&R Mechanical Company. Today, C&R Mechanical Company – including independently managed C&R Healthcare Planning – is recognized throughout America’s Heartland as a premier mechanical contractor and engineering firm; and for providing superior services in commercial, medical, industrial and institutional HVAC design and installation.

George R. Edinger, President

Because we take a fresh look at every project, using only proven and applied technologies, the long term “health” of every facility is built-in from the first day we start working together. And our service commitment is guaranteed for every project.

Creating Environments for Life™ … at C&R Mechanical Company, it’s not only what we do, it’s what we do best.

Memberships & Affiliations

C&R Mechanical Company
Mechanical Contractors Association of America
Sheet Metal and Air-Conditioning Contractors National Association
Associated General Contractors
American Society of Heating/Refrigerating/Air-Conditioning Engineers
United States Green Building Council
Building Owners & Managers Association of St. Louis
American Society of Professional Engineers

C&R Healthcare Planning
American Society of Hospital Engineers
Missouri Hospital Association



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