YOUR County Chamber


    Hydro-Thermal is the global leader in the development and manufacturing of Hydroheaters.  Our more than 80 years of steam heating expertise and innovation have earned us a world class reputation in the wide range of industries we serve. We are committed to delivering high value, superior products and exceptional customer service with a performance guarantee that is unsurpassed in the industry.


    Through our headquarters and vast global channel partner network, Hydro-Thermal is represented in six continents and all industrialized areas. Our technology is used in facilities in more than 80 countries around the world to heat water and process fluids, precisely and efficiently.




    Hydro-Thermal is proud of our rich history of innovation, engineering expertise and rapid expansion. From recognition as a local family business to honors from the Commander in Chief, our commitment to constantly evolving our products and processes is evident. Here are some of the awards we have recently received for our efforts:


    • 2015 Future 50 Company
    • 2014 President’s E Award for Exports
    • 2014 IQ (Innovation Quotient) Award
    • 2014 Top 10 Business of the Year Award      
    • 2012 Wisconsin Family Business of the Year-Grand Award
    • Seven Seals Award and Certificate of Recognition
    • 2011 Governor’s Export Achievement Award
    • 2010 Wisconsin Manufacturer of the Year




    Hydro-Thermal traces its roots back to 1927, when inventors John White and Roy Miller patented heating equipment using steam to precisely control water temperature. In 1964 the Zaiser family purchased the business and renamed it Hydro-Thermal Corporation. Through the years Hydro-Thermal has drastically expanded its product offerings and the industries it serves. Today, Jim Zaiser represents the third generation, leading the company’s product diversification, advanced two-phase flow realization, international expansion, and system integration.


    The company has more than a dozen active patents and registration in numerous foreign countries. It manages business processes though an integrated ISO 9001 quality procedure. An on-site test lab allows engineers, researchers and academia to completely understand and develop new innovative and value-added processes. The company continues to invest in people, hiring the best and the brightest, and investing in the health and wellness of all employees.


    Fueling our innovation is our strategic research partnerships with people outside our building, our customers. Leading Midwestern universities, research associations and independent R&D engineering firms all play a role in challenging our fluid heating specialists. The Hydro-Thermal Partners in Technology program facilitates improvements and enhancements to current products, as well as, and inspires new product development.



    Aside from our own awards, Hydro-Thermal’s revolutionary approaches have also played a role in our customers being recognized for innovation. In 2010 Creekstone Farms was awarded the Smart Sourcing Award by Food Manufacturing Magazine for their use of Hydroheaters™ in their central hot water system. In 2011 a Hydro-Thermal customer who uses our heaters for an immersion cooking process, received a Quality Award as a supplier to McDonald’s USA.


    A harbinger of innovation, Hydro-Thermal currently holds more than a dozen active patents which are registered in multiple foreign countries. We also have four patents pending on new heater technologies, are also named in over 40 process patents. Our products are specified in systems developed by leading system integrators and are tied to over 60 of these off-shoot product patents.

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