Althoff Industries Email Format

ConstructionIllinois, United States51-200 Employees

Althoff Industries is a mid-sized construction services company based in Crystal Lake, Illinois. Founded in 1961 by James Althoff to serve residential heating and air-conditioning customers in the Northwest Chicago suburbs, it soon expanded to include plumbing, piping, and electrical services to meet growing demand. As the business grew, it began serving small businesses and light commercial clients, building long-term relationships with some of the region's largest institutions and manufacturing companies.

In the 1990s, the company formed a Building Automation Group to design and install HVAC control systems, reflecting an emphasis on integrating advancing technologies. The organization continues to adapt to new technologies to deliver value to customers, maintaining a focus on quality service across its diversified client base.

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