Insights

Established Market Presence Ahern is a well-established player in the construction industry with a history dating back to 1880, serving large-scale commercial and industrial clients across the United States, making it a reliable partner for comprehensive mechanical and fire protection solutions.

Award-Winning Reputation Recognized with multiple awards including BUILD Wisconsin and top rankings in ENR’s Top 600 Specialty Contractors, Ahern demonstrates a strong reputation for quality and industry leadership, which can facilitate trust and new project opportunities.

Sustainability & Environmental Focus Ranked among the top environmental firms by ENR, Ahern’s emphasis on environmentally responsible construction and retrofit projects presents opportunities to partner with clients prioritizing sustainability and green building standards.

Growth & Expansion Potential With revenues estimated between $500 million and one billion and a sizable workforce of over 1,900 employees, Ahern is positioned for growth, opening doors for expanding contracts in new construction, retrofit, and ongoing service projects.

Technology & Innovation Utilizing a modern tech stack including Google tools, Microsoft Advertising, and web optimization platforms indicates Ahern’s focus on technological integration, which can enhance project efficiencies and client engagement, creating opportunities for innovative service solutions.

Ahern Tech Stack

Ahern uses 8 technology products and services including Bing Ads, AutoCAD, Fastly, and more. Explore Ahern's tech stack below.

  • Bing Ads
    Advertising Networks
  • AutoCAD
    Cad & Graphics
  • Fastly
    Content Delivery Network
  • Cloudflare
    Content Management System
  • PHP
    Programming Languages
  • Cloudflare Bot Management
    Security
  • GlobalSign
    System Security Services
  • HTTP/3
    Web & Portal Technology

Media & News

Ahern's Email Address Formats

Ahern uses at least 2 format(s):
Ahern Email FormatsExamplePercentage
FLast@jfahern.comJDoe@jfahern.com
96%
First_Last@jfahern.comJohn_Doe@jfahern.com
2%
First.Last@jfahern.comJohn.Doe@jfahern.com
1%
LFirst@jfahern.comDJohn@jfahern.com
1%
FLast@ahernfire.comJDoe@ahernfire.com
99%
FMiddleLast@ahernfire.comJMichaelDoe@ahernfire.com
1%

Frequently Asked Questions

Where is Ahern's headquarters located?

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Ahern's main headquarters is located at 855 Morris Street Fond du Lac, Wisconsin 54935 United States. The company has employees across 2 continents, including North AmericaAsia.

What is Ahern's phone number?

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You can contact Ahern's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Ahern's official website and social media links?

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Ahern's official website is jfahern.com and has social profiles on LinkedIn.

What is Ahern's NAICS code?

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Ahern's NAICS code is 23 - Construction.

How many employees does Ahern have currently?

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As of June 2026, Ahern has approximately 1.1K employees across 2 continents, including North AmericaAsia. Key team members include Chief Executive Officer: T. Q. Đ.Chief Operating Officer: J. H.Chief Safety Officer: D. R.. Explore Ahern's employee directory with LeadIQ.

What industry does Ahern belong to?

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Ahern operates in the Construction industry.

What technology does Ahern use?

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Ahern's tech stack includes Bing AdsAutoCADFastlyCloudflarePHPCloudflare Bot ManagementGlobalSignHTTP/3.

What is Ahern's email format?

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Ahern's email format typically follows the pattern of FLast@jfahern.com. Find more Ahern email formats with LeadIQ.

When was Ahern founded?

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Ahern was founded in 1880.

Ahern

ConstructionWisconsin, United States1001-5000 Employees

Ahern is a long-established mechanical and fire protection contractor based in Fond du Lac, Wisconsin, founded in 1880. It serves commercial and industrial clients across the United States, delivering HVAC, plumbing, building controls, sprinkler, extinguisher and alarm systems, and fabrication for construction and service projects. The company partners on new construction or retrofit work, services existing facilities, and provides prefabricated systems to help reduce project risk.

It operates within the construction industry as a specialized contractor focused on systems that address life-safety, environmental, and personal comfort needs. A recent development includes expansion of its presence in Iowa with a new Mason City office announced in May 2026.

Section iconCompany Overview

Headquarters
855 Morris Street Fond du Lac, Wisconsin 54935 United States
Phone number
NAICS Code
23 - Construction
Founded
1880
Employees
1001-5000

Section iconFunding & Financials

  • $500M$1B

    Ahern's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $500M$1B

    Ahern's revenue is estimated to be in the range of $500M$1B

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