1125 S Lake St
Montgomery, IL, 60538
(630) 906-1300
www.rjoneil.com/
Established in 1926, R.J. O'Neil Mechanic Contractors provides HVAC-R, plumbing, and mechanical construction.
Established in 1926, R.J. O’Neil has a strong sense of pride that characterizes our company. We have built a solid reputation as a high-quality service-oriented firm with a can-do team-oriented attitude. We work diligently to improve our products, processes, and services every day. We provide quality HVAC-R, plumbing, and mechanical services to the municipal, industrial, commercial, and residential markets. Our can-do attitude, long history of service, and proven process for customer satisfaction build lasting relationships with our clients, making R.J. O’Neil an unparalleled choice for all of your mechanical service needs.