RJ Kuhn is an Oswego-based plumbing, heating, air-conditioning and remodeling contractor that serves homes and businesses in DeKalb, DuPage, LaSalle, Kane, Kendall and Will Counties. Dick Kuhn, a 50-year veteran of the plumbing profession founded the business in 1972. His two sons, Kevin and Rick, worked for the company for many years before taking over in 2012. It is and always will be a business where excellence is expected of us because it is a principle of the family name. We offer 24 hour emergency service. Our office is open Monday Friday 6:30am to 4:30pm.