A full-service mechanical contracting firm, R.J. O’Neil specializes in process piping, plumbing, heating, air conditioning, and refrigeration. Offering complete mechanical services including systems design and layout, installation, maintenance and emergency repair. We also offer comprehensive maintenance programs for our commercial and industrial customers.

A review of our completed projects will testify to our working familiarity with many types of mechanical systems. We have provided systems layout, installation, and repair for a broad range of mechanical process. Past installations include new construction, renovations, and exacting historical renovations. The large number of public projects we undertake stands in testament to our competitiveness in the negotiated or bid arena.

Our extensive inventory of tools, equipment, and components has been selected for greater productivity in both routine and specialized projects. We maintain a complete sheet metal and welding fabrication shop featuring high-speed plasma cutting equipment for the custom fabrication of carbon, galvanized, and stainless steel sheet metal, piping, steel, and other specialized items. Specialized equipment further includes: crane, backhoe, jet rodding machine, hot-tapping tools, computerized backflow test gauges, combustion gas analyzers, electronic carbon monoxide detectors, confined space equipment.

Established in 1926, R.J. O’Neil is now entering its 4th generation of family ownership. A strong sense of pride characterizes our company. We have built a solid reputation as a high quality service oriented firm with a can do team orientated attitude and we work diligently everyday to improve our products, processes and services.