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


About Us

Tessendorf Mechanical Services is built on a foundation of quality workmanship and service guided by integrity.  We have continued to provide professional and timely mechanical repairs to the Fox Valley for over 60 years.  Each of our technicians has 20+ years experience in troubleshooting complex mechanical systems and as an organization, we are fully equipped to provide the following services:

Design/Build Engineering, Heating, Air-conditioning,Ventilation, Refrigeration, Automated Building Controls, Custom 24-Hour Service Maintenance Programs, Energy Management Analysis, Indoor Air Quality Analysis, Boiler Install/Service, Certified Air Balancing 

Our approach and capabilities allow us to ensure a complete a life-cycle oversight of all our customers’ mechanical systems.  From design and install to preventative maintenance and repairs, our intimate level of knowledge and continuity of workflow allow us to maintain systems at a low cost and recognize and prevent problems before they occur.  In addition, should an emergency occur, we are local company capable of providing 24 hour emergency service to meet your needs.





Our expertise and technical know-how helps ensure the job is done right the first time providing the best overall value to our many local customers.