Overview

R.J. O’Neil Inc. Mechanical Contractors has served the Chicagoland area since 1926, establishing nearly a century of expertise in mechanical systems and emergency plumbing solutions. Based in Montgomery, Illinois, this established contractor combines unwavering commitment to quality service with a team-oriented approach that prioritizes customer satisfaction and continuous improvement across all operations.

Services Offered

R.J. O’Neil specializes in comprehensive plumbing, HVAC-R, and mechanical pipefitting services for municipal, industrial, commercial, and residential clients. The company provides end-to-end solutions ranging from new system installation to ongoing maintenance and repair work. Maintenance packages are available to keep systems operating at peak efficiency, with 24/7 emergency service available for urgent plumbing situations that cannot wait.

Why Customers Choose This Business

R.J. O’Neil distinguishes itself through five key differentiators. First, the company offers complete mechanical system coverage from installation through maintenance and repairs, ensuring long-term support for decades. Second, their focus on new construction and expansion projects for commercial, industrial, and municipal buildings demonstrates specialized expertise, backed by a 100% on-time completion record. Third, R.J. O’Neil is a certified woman-owned and minority-owned business for the City of Chicago and State of Illinois, reflecting their commitment to equity and responsibility alongside an unwavering safety priority. Fourth, relationship-building with clients, fellow tradespeople, and subcontractors ensures consistent communication and better project outcomes. Finally, clients work with a single project manager throughout projects, creating accountability and continuity.

Service Area and Availability

Serving the greater Chicagoland region from their Montgomery location, R.J. O’Neil maintains round-the-clock emergency availability for plumbing crises. Whether facing burst pipes, water heater failures, or other urgent mechanical issues, customers can rely on immediate response to minimize damage and restore function quickly.

Final Thoughts

R.J. O’Neil Inc. Mechanical Contractors combines nearly a century of experience with modern service excellence. Their culture emphasizes positivity, professionalism, and genuine partnerships with clients. For emergency plumbing needs or planned mechanical work in the Chicagoland area, R.J. O’Neil provides the expertise, availability, and commitment that residential and commercial properties require.