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A Cooper Power Systems Authorized Service Center

(507) 646-4060 | (855) 321-3873

EIR Testing & Maintenance Co.

About Us

Our History

In 1983, EIR Testing and Maintenance began servicing OCRs for cooperatives in the Midwest.  Dennis Betz and Eric Gagne, of B & B Transformer, purchased EIR Testing and Maintenance in 2004.  In 2017, Eric identified the need to provide increased customer contact and partnered with John Tonsager.  EIR Testing and Maintenance has always been an American owned and operated small business committed to high quality and customer-focused service.  We are proud that we have technicians with over 20 years of experience with EIR Testing and Maintenance.

Today EIR Testing & Maintenance is proud to serve nearly 100 cooperatives throughout the Midwest.  Our controlled growth through the years has allowed us to maintain our rigorous service standards and pay close attention to the details.

Tours & Seminars

We gladly welcome tours for our customers at our facility in Northfield, Minnesota.  We also host OCR seminars in the spring each year to allow cooperatives an opportunity to expand their knowledge with OCR’s.

Please contact us if you’re interested in a tour or our seminars.

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