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R.J. O'Neil Inc. Employee Directory

ConstructionIllinois, United States11-50 Employees

R.J. O'Neil Inc. is a fourth-generation, family-owned Commercial Mechanical Contractor operating in the construction sector. Based in Montgomery, Illinois, the company focuses on heating, air conditioning, refrigeration, process piping, and plumbing, offering services that span design and layout through installation, maintenance, and emergency repair. Its maintenance programs are designed for commercial, municipal, and industrial clients, addressing ongoing reliability and efficiency needs. The firm serves customers in the Chicagoland area, providing integrated mechanical solutions to support building systems and operations. In early 2026, R.J. O'Neil announced a partnership adding Novo Water systems to its portfolio, reflecting ongoing expansion of home and facility solutions within its regional market.

Find R.J. O'Neil Inc. employees' phone numbers or email addresses

R.J. O'Neil Inc. Global Highlights

Location
Employees

North America
7

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  • United States Of America
    7

R.J. O'Neil Inc.'s Leadership

  • Stylized image of a person
    J. G.
    Mobile Phone
  • Stylized image of a person
    J. M.
    Mobile Phone
  • Stylized image of a person
    R. O.
    Mobile Phone

R.J. O'Neil Inc. Employee Metrics

100%
50%
0%
2026
2025
  • Civil Engineering & Construction
  • Sales
  • Accounting
  • Administrative
  • Analytics
  • Other
  • Arts & Design

Contact profiles from R.J. O'Neil Inc.

Name
Title
Contact
Location
Last Update
  • Stylized image of a person
    J. G.
    Mobile Phone
    UNITED STATES
    Mar 08, 2023
  • Stylized image of a person
    J. M.
    Mobile Phone
    UNITED STATES
    Apr 12, 2024
  • Stylized image of a person
    R. O.
    Mobile Phone
    UNITED STATES
    Mar 08, 2023

Frequently Asked Questions

What is R.J. O'Neil Inc. known for?

Minus sign iconPlus sign iconR.J. O'Neil Inc. operates in the Construction industry; you can contact the main corporate office by phone at
+1-630-906-****
. Explore R.J. O'Neil Inc.'s company overview page for more information.

What is R.J. O'Neil Inc.'s most common email format?

Minus sign iconPlus sign iconR.J. O'Neil Inc. employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more R.J. O'Neil Inc. email formats with LeadIQ.

How many employees does R.J. O'Neil Inc. have currently?

Minus sign iconPlus sign iconR.J. O'Neil Inc. has approximately 11 employees as of July 2026. These team members are located across 1 continents, including North America.

Who are R.J. O'Neil Inc.'s key employees and leadership?

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As of July 2026, R.J. O'Neil Inc.'s key employees include:

  • : J. G.
  • : J. M.
  • : R. O.

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