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R.J. O'Neil, Inc.

Electrical Baseboard or Wall Heater - Repair, Central A/C - Install, Central A/C - Service or Repair,

About us

R.J. O’Neil, Inc. is a small shop with a lot of know-how. Since 1926, R. J. O’Neil, Inc. has been serving Montgomery, IL and the surrounding area. With a team of talented and skilled workers who can solve any plumbing or HVAC issue, it won’t matter if you own a business or if your problem is at home. From installing a faucet in your home or school to plumbing entire buildings, they have done it all. Always reliable and always on call, R.J. O’Neil, Inc. is the first choice in service and ability. Call us at (630)906-1300, email us at [email protected], or feel free to stop in at 1125 S. Lake Street, Montgomery, IL 60538.

Business highlights

Emergency services offered
99 years of experience

Amenities

Emergency Services

Yes

Accepted Payment Methods

  • CreditCard
Reviews
1.01 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
0%
4
0%
3
0%
2
0%
1
100%

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Showing 1-1 of 1 reviews
Jonathan D.
Jul 2025
1.0
Central A/C - Service or Repair
$14,000
As a small business owner, I strongly caution others against this HVAC/R company. In over 10 years, they?ve been the least trustworthy and poorest performing contractor I?ve worked with. We experienced repeated service issues, a 25% rate hike without notice, ignored emails, and unreturned quote requests. Worse, we were billed for work that wasn?t done?confirmed twice, including by a third-party inspection with photos. Even when confronted, they deflected and delayed for months. We had to hire another company. They also mis-sized a walk-in freezer due to bad measurements and blamed their supplier. When shown proof it was undersized, they argued with no solution. They later mismeasured again on a replacement bid. Their attitude throughout was defensive, unprofessional, and dismissive. If something goes wrong?and it likely will?they will not stand behind their work. Save yourself the frustration and look elsewhere.

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

R.J. O'Neil, Inc. is currently rated 1.0 overall out of 5.
R.J. O'Neil, Inc. accepts the following forms of payment: CreditCard
No, R.J. O'Neil, Inc. does not offer free project estimates.
No, R.J. O'Neil, Inc. does not offer eco-friendly accreditations.
No, R.J. O'Neil, Inc. does not offer a senior discount.
Yes, R.J. O'Neil, Inc. offers emergency services.
No, R.J. O'Neil, Inc. does not offer warranties.

Contact Information

1125 S. Lake Street, Montgomery, IL 60538

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