The W.J. O’Neil Company is a team of specialists united by a singular purpose: to exceed the expectations of our clients. We are Project Estimators, Journeymen Pipefitters, Service Technicians, Project Foremen, Safety Engineers and more, bound together by principles of integrity, quality, and excellence.

From the smallest service job to the largest construction project, we deliver quality work each and every time. We are a multi-faceted mechanical contractor specializing in industrial and commercial installations and service, and achieving 100% customer satisfaction is why we have an excellent reputation in the Mechanical Contracting Industry.