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 you most difficult mechanical system problem, we are confident in our abilities to solve them”

  

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