As a family-owned and trusted plumber since 1890, John J. Cahill, Inc. has earned a reputation among residential and commercial customers for our expertise, impeccable workmanship, unfailing service and, above all else, trust and integrity — the cornerstone of the Cahill business.
John J. Cahill, Inc. staff members have worked for our company an average of 17 years. Our highly skilled and trained technicians hold certifications in plumbing, bathroom and kitchen design, heating, ventilation, and air conditioning. The main point to know about John J. Cahill, Inc. is that we have a loyal crew who care about customers and always seek to provide quality service. Contact us today for a free estimate!
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Certified by John J. Cahill Plumbing, Heating & Air Conditioning • Apr 05, 2026
John J. Cahill Plumbing, Heating & Air Conditioning
Certified by John J. Cahill Plumbing, Heating & Air Conditioning • Apr 05, 2026
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
Reviews
4.1
73 reviews
5 stars
52
4 stars
4
3 stars1
2 stars
3
1 star
13
CT
Carrie Thiergart
Mar 21, 2026
5.0
Cahill went above and beyond to provide expedited service for a sewer scope and rodding when I was under contract to sell my house. The customer service was excellent, they understood the deadline I was under and really made a huge effort to get out to my house the following morning to get the work done. I appreciate the quick service and follow up communication. They did a great job and I'm happy to support a local family owned business - thank you for your excellent service!
MM
MargaretO
Feb 5, 2026
5.0
Our difficult-to-get-to furnace stopped working. The problem was carefully diagnosed and options were offered without pressure, just trustworthy wisdom. The repair was made and then well-tested. We appreciated the good communication, the prompt repair, the honest assessment and careful work. A great company.
DW
David W
Jan 27, 2026
5.0
Very upfront pricing, quick service during a hectic time with -10 degree temperatures, plumbing technician was very skilled and honest. Thanks Cahill!
YL
Yves Lassere
Dec 16, 2025
5.0
Excellent service! Very professional and knowledgeable!
WR
William Radzilowsky
Dec 3, 2025
2.0
Called and asked for an estimate because my mom’s actuator on her HVAC unit went out. The call was made at 4 PM. They said that they would have to charge me the overtime rate which Over $400. Fair during regular hours. I then called another company that was able to diagnose and fix it. They charged $100 for the diagnosis. And they were open till 6 PM so you guys are rip off artist two stars so it’s harder to delete
Frequently Asked Questions About John J. Cahill Plumbing, Heating & Air Conditioning
What services does John J. Cahill Plumbing, Heating & Air Conditioning offer?
They offer residential and commercial plumbing, emergency plumbing, sump pump services, drain cleaning, sewer services, water heaters, heating & cooling, HVAC services, furnace and boiler repairs, and kitchen and bathroom remodeling and design.
Where is John J. Cahill Plumbing, Heating & Air Conditioning located?
Their address is 1515 Church St, Evanston, IL 60201, USA.
What are the business hours of John J. Cahill Plumbing, Heating & Air Conditioning?
They operate 24/7, every day of the week, including weekends and holidays.
Is John J. Cahill Plumbing, Heating & Air Conditioning certified or affiliated with any associations?
Yes, they are associated with North American Technician Excellence (NATE), Plumbing Contractors Association, American Society of Sanitary Engineers, and National Kitchen & Bath Association.
How can I contact John J. Cahill Plumbing, Heating & Air Conditioning?
You can call them at +1 847-220-4052 or email info@cahillinc.com.
What brand products does John J. Cahill use or represent?
They work with brands like Bradford White Water Heaters, wedi GmbH, Lennox, Crystal Cabinets, and Grohe.
Which cities are included in John J. Cahill's service area?
They serve Evanston, Skokie, Glenview, Morton Grove, Niles, Winnetka, Wilmette, Rogers Park (Chicago), Albany Park (Chicago), Edgewater (Chicago), Golf, and Lincolnwood, Illinois.
Are there any nearby parks or recreational spots customers might visit before or after their appointment?
Yes, Mason Park is a nearby park and concert venue perfect for relaxation or attending events before or after your visit.
Can I find local landmarks or community centers near John J. Cahill Plumbing, Heating & Air Conditioning?
Yes, Church Street Village and the Gibbs - Morrison Cultural Center are nearby landmarks and community centers you might explore.
Are there convenient local shops or dining options near John J. Cahill Plumbing, Heating & Air Conditioning?
Nearby you can find dining options such as Emerson Grill, Papa Philly, and Fatzee's, as well as stores like Skeleton Store and Babylon Discount Store for shopping needs.
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