Company Overview
J. F. Ahern Co. is committed to providing customers with the finest mechanical and fire protection contracting services in the industry.

At J. F. Ahern Co., we build systems that keep you safe; that maintain cleanliness and sanitation; that regulate temperature. We build systems that serve you. Since 1880, we have performed a full range of mechanical services on projects from several thousand dollars to over 20 million.

We are equally comfortable working for municipalities, institutions, manufacturers, and commercial developers and builders in both private and public sectors. We operate as prime contractor or subcontractor.

One of the leading mechanical and fire protection contractors in the United States, J. F. Ahern Co. is a privately-held company headquartered in Fond du Lac, Wisconsin, with branch offices throughout the upper Midwest.

We employ approximately 1,000 people, consisting primarily of members of the U.A. (the United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada). We also employ union laborers, millwrights, operating engineers, and sheet metal workers, as well as a complete in-house corporate service team.

What is the Ahern Advantage?

The Advantage is working for an organization that has grown consistently year after year while supporting their leaders, employees, communities and customers.

The Advantage is a family-owned and -operated company, led by an ownership team that includes members of the 4th and 5th generation Ahern family.

The Advantage is a culture where top management seeks and values the input of employees at all levels of the organization.

The Advantage is more than just a paycheck. Ahern encourages career progression, personal growth, as well as the opportunity to give back to the community.

The work is challenging.

The rewards are great.

Imagine working for a unique company with a safe, positive work environment built on cooperation and mutual respect. That is what being part of the Ahern team is all about. That's the Ahern Advantage.
Company Summary
J.F. Ahern Co.
Number of Employees
500 or more
(920) 907-5119
855 Morris St
Fond du lac, WI