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  • Hours:

    Unless we are offsite for events, ribbon cuttings or meetings:

    Monday-Thursday: 9am-5pm

    Friday: 9am-2pm

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  • R.J. O'Neil Mechanical Contractors

    Categories

    Contractors/SpecialtyBackflow Device Testing, Repair & InstallationHeating & A/CPlumbing

    About Us

    R.J. O’Neil, Inc. is a Mechanical Contractor servicing the Greater Chicagoland Area. Established in 1926, we have decades of experience in HVAC-R, Plumbing, and Pipefitting. We specialize in maintenance, service, and installation across a variety of industries. We build relationships with the people driving your success: you, fellow tradespeople, our team, and our subcontractors.

    Key Services:

    *Turn-Key Construction Projects
    * Preventative Maintenance Packages
    * Installation & Service
    - Plumbing
    - Sewer
    - Pipe
    - HVAC
    - Refrigeration
    - Water & Waste Water Systems
    - Process Piping
    - Water Heaters

    Expertise:

    End-to-end solution for mechanical systems: from install to maintenance. Count on us to install, maintain and repair your mechanical systems for decades to come.

    Markets Served:

    * Healthcare
    * Education
    * Park Districts
    * Industrial
    * Retail Spaces
    * Commercial Office Buildings
    * Government
    * Wastewater

    Highlights

    Images

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    Luxaire Certified Comfort Expert

    Rep/Contact Info

    Sara Grygiel
    Service Coordinator
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    Jessica Medrano
    President
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