Ahern: Detailed Company Information & Corporate Profile
Summary
Ahern is an independent company headquartered in Fond du Lac, Wisconsin, serving the building sector with a workforce of 1,000–5,000 employees. Founded in 1880 and operating under SIC Code 5200, it generates annual revenue between $500 million and $1 billion and serves clients throughout the Green Bay Metropolitan Area.
The firm specializes in mechanical contracting, industrial contracting, fire protection, pipe fabrication, building controls, specialty contracting, commercial HVAC, commercial plumbing, fabrication shops, fire sprinkler systems, fire extinguisher & alarm systems, energy solutions, and multi‑trade modular prefabrication. Key personnel include Vice President Alan Vander Velden, General Manager Jerid Winkler, Service Coordinator Cheyenne Keyes, Project Coordinator Michelle Klotz, and Safety Business Partner Erik Foster. Through integrated services from design to installation, Ahern delivers comprehensive building solutions across Wisconsin and beyond.
| Ahern Website | jfahern.com |
| Social Links |   |
| Phone Number | 800.532.4376 |
| Industries | |
| Ahern Headquarters Address | 855 Morris Street, Fond du Lac, Wisconsin, 54935 US |
| Company Size | 1000-5000 employees |
| Specialities & Services | Mechanical Contracting, Industrial Contracting, Fire Protection, Pipe Fabrication, Building Controls, Specialty Contracting, Commercial HVAC, Commercial Plumbing, Fabrication Shops, Fire Sprinkler Systems, Fire Extinguisher & Alarm Systems, Energy Solutions, Multi-trade modular prefabrication |
| SIC Code | 5200 |
| DMA Code | Green Bay Metropolitan Area |
| Founded | 1880 |
| Estimated Annual Revenue | $500M - 1B |
| Operating Status | Independent Company |
| Updated: | 2026-09-24 |
Competitors
Name | Founded | Type | Employees |
|---|---|---|---|
| 1926 | Public Company | 10K - 50K | |
| 1987 | Privately Held | 100 - 250 | |
| 1918 | Privately Held | 25 - 100 | |
| 1949 | Privately Held | 250 - 500 |
Estimated Website Traffic
The chart shows a growth in traffic to the jfahern.com website. In August, traffic increased to 12185, compared to 12054 in the previous month. The highest traffic in 2026 was recorded in January, reaching 25411 visits.
Workforce Turnover
Number of employees switched from or switched to
Departmental sample breakdown
Length of Employment
Ahern's workforce includes employees across a wide range of tenure levels.
12% have been with the company for less than 1 year12% have been with the company for 1 to 2 years5% have been with the company for 3 to 4 years8% have been with the company for 5 to 7 years8% have been with the company for 8 to 10 years55% have been with the company for more than 11 years
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Ahern Corporate Information: FAQ
Data Privacy
GDPR COMPLIANT
SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.
CCPA COMPLIANT
SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.
