John J Cahill: Evanston, IL's Trusted Plumbing & HVAC Partner Since 1890

Business Overview

For over 130 years, John J Cahill in Evanston, IL has been the go-to name for reliable home and business systems. This family-owned company provides 24/7 emergency service for plumbing and HVAC problems, so help is always available when you need it most.

Their team includes licensed plumbers and NATE-certified HVAC technicians, many with decades of experience. They work on both residential homes and commercial buildings throughout the Chicago North Shore.

Key Services for Homeowners & Businesses

John J Cahill handles the essential systems that keep your property comfortable and functioning.

• Plumbing: Full installation, repair, and replacement services. This includes toilet and shower installation, drain cleaning, sewer rodding, and thorough plumbing inspections.
• Heating & Cooling: Repair, installation, and maintenance for furnaces, boilers, and air conditioners to handle our Illinois seasons.
• Remodeling & Renovation: Specializing in bathroom remodeling and updates, from bathtub installation to full project management.

Areas Served

John J Cahill serves a wide range of communities in and around Cook and Lake counties. Their technicians know the local area well, from the historic homes of Evanston and Winnetka to the commercial buildings in Skokie and Northbrook.

They provide prompt service to: Chicago, Evanston, Skokie, Glenview, Wilmette, Highland Park, Lake Forest, Northbrook, Niles, Mount Prospect, Park Ridge, Morton Grove, Deerfield, and many surrounding towns.

Company History

The story begins in 1890 with John Cahill, an Irish immigrant who started a plumbing business. Today, John J Cahill Inc. holds the title of the oldest plumbing company in Illinois still run by the founding family. They've grown from a small shop to a full-service mechanical contractor, adapting to over a century of changes in technology and community needs.

Leadership

The company is now led by John J. Cahill III, representing the fourth generation of the Cahill family at the helm. This deep local roots mean the business is invested in the community's long-term health and the quality of work done in its homes and businesses.

Specialties & Highlights

• Uncommon Longevity: The average employee has been with the company for about 20 years, which means highly experienced technicians show up at your door.
• Broad Expertise: Certifications span plumbing, HVAC, and kitchen/bath design, allowing for coordinated service.
• Focus on Integrity: The business has built its reputation on trust and doing the job right, which is a core family value.
• Preventive Care: They offer maintenance programs to help avoid costly emergency repairs, especially for aging Chicago-area heating systems.
• Free Estimates: No-obligation quotes are provided for planned projects.

Why Locals Choose John J Cahill

Residents and business owners in Evanston, IL and across the North Shore return to John J Cahill for a simple reason: proven reliability. When you deal with harsh winters and humid summers, you need systems you can count on. This company combines old-fashioned dependability with modern training. Their long history in the area means they understand the specific challenges of local buildings. For plumbing that works, climate control you can trust, and remodeling done with care, John J Cahill has been a steady partner for generations.