In-house Capabilities

Our in-house capabilities are value-added services that we provide to our clients, and they include:

Pipe fabrication facilities – We have two complete fab shops: one in Livonia, Michigan and one in Chattanooga, Tennessee. We can produce offsite fabrication of any piping components our customers need. This saves time, guarantees high quality standards, and ensures that demanding schedules can be met.

Sheet Metal – Our in-house group enables us to effectively support the sheet metal needs of our construction and service divisions. We offer our clients a fully operational sheet metal shop, complete with metal fabrication capabilities.

Controls – Our in-house Controls division is an integral piece of our full-service mechanical contractor capabilities. They are a solutions provider to our customers, design support to our construction group, and a technical partner to our service division.

Building Information Modeling (BIM) – Our 3D CAD Design and layout capabilities allow us to identify and eliminate problems before the work begins on the job site.

W.J. O’Neil offers additional expertise in the following areas:

  • Systems Analysis
  • Survey, Testing and Solutions
  • Sheet Metal Duct and Exhaust Systems
  • Refrigerants (All types, including Ammonia, Recovery and Recycle)
  • Data Centers (Precision, Environmental and Main Frame Chillers)
  • Indoor Air Quality Clean Air Systems
  • Piping (Refrigeration, Steam, Air, Water and Process)
  • Balancing (Air and Hydronic)
  • Plumbing (Design/Build, Backflow Certification)
  • Chillers (Centrifugal, Absorption, Reciprocating, Screw and Scroll)