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fax (847) 426-6234
email: steve@tessendorfmechanical.com


Mechanical systems Service, Design, and Installations are our specialties.

Since our establishment in 1945, Tessendorf Mechanical Services has been providing our Commercial, Industrial, and Residential clients with Green Technologies, Heating, Air-Conditioning, Sheet Metal, Process Piping, Controls, Refrigeration, Ventilation, and Energy Systems design, repair, and installation.

“Challenge us with your most difficult mechanical system problem, we are confident in our abilities to solve it”


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Servicing Northern Illinois, Northwest Indiana, and Southern Wisconsin since 1945.