WM. J. Kraus and Son is a fourth generation family owned and operated company that believes honesty, integrity, and reliability are the fundamental principles to customer satisfaction and company success. As a family owned and operated company that has been in business since 1932, we offer you a legacy of quality service that is undeniable. WM. J. Kraus and Son is now operated by Adam Kraus, great-grandson of the company founder. For more than 89 years, Kraus and Son has served the tri-state area around Keokuk, putting customers first with the finest service and highest-quality heating and cooling products. Today, we’re proud to offer geothermal backed by the same timeless quality and cutting-edge technology we’ve built a reputation on.