Insights

Expansion Signals Ahern is actively expanding its geographic footprint with a new Mason City, Iowa office, indicating growing service demand and potential cross-sell opportunities for HVAC, plumbing, and fire protection solutions across commercial and industrial facilities in the Midwest.

Integrated Controls The launch of Controls integration Smart Monitor and emphasis on building controls suggests opportunities to upsell advanced building automation, monitoring, and energy management services to existing and new facilities.

Healthcare Focus Recognition for complex healthcare projects and multi-trade capabilities positions Ahern as a potential partner for hospitals and medical centers needing reliable fire protection, cooling, and sterile environment systems.

Sustainability Momentum ENR Top 200 Environmental Firm recognition and BUILD Wisconsin Awards demonstrate a commitment to sustainable, high-performance projects, aligning with clients pursuing green retrofits, energy efficiency, and environmental certifications.

Financial Scale With revenue in the half-billion to one-billion range and an employee base nearing five thousand, Ahern presents as a capable, low-risk partner for large-scale bids, service contracts, and prefabrication-driven turnkey solutions.

Similar companies to Ahern

Ahern Tech Stack

Ahern uses 8 technology products and services including Linkedin Insight Tag, AutoCAD, Fastly, and more. Explore Ahern's tech stack below.

Linkedin Insight Tag
Analytics
AutoCAD
Cad & Graphics
Fastly
Content Delivery Network
Drupal
Content Management System
Pantheon
Platform As A Service
reCAPTCHA
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 Formats	Example	Percentage
FLast@ahernfire.com	JDoe@ahernfire.com	99%
FMiddleLast@ahernfire.com	JMichaelDoe@ahernfire.com	1%
FLast@jfahern.com	JDoe@jfahern.com	96%
First_Last@jfahern.com	John_Doe@jfahern.com	2%
First.Last@jfahern.com	John.Doe@jfahern.com	1%
LFirst@jfahern.com	DJohn@jfahern.com	1%

Frequently Asked Questions

What is Ahern's phone number?

You can contact Ahern's main corporate office by phone at

+1-920-921-****

. 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?

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

How much revenue does Ahern generate?

As of July 2026, Ahern's annual revenue is estimated to be $500M - $1B.

What is Ahern's NAICS code?

Ahern's NAICS code is 23 - Construction.

How many employees does Ahern have currently?

As of July 2026, Ahern has approximately 1.1K employees across 2 continents, including North AmericaAsia. Key team members include Chief Executive Officer: T. Q. Đ.Chief Financial Officer: A. W.Ashrae Student Branch President Milwaukee School Of Engineering: T. M.. Explore Ahern's employee directory with LeadIQ.

What industry does Ahern belong to?

Ahern operates in the Construction industry.

What technology does Ahern use?

Ahern's tech stack includes Linkedin Insight TagAutoCADFastlyDrupalPantheonreCAPTCHAGlobalSignHTTP/3.

What is Ahern's email format?

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

When was Ahern founded?

Ahern was founded in 1880.

Ahern

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

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

Q: How many employees does Ahern have currently?

Ahern has approximately 1.1K employees.

Q: What technology does Ahern use?

Ahern's tech stack includes Linkedin Insight Tag, Windows 10, Microsoft, Microsoft Outlook, Microsoft Windows.

Q: What is Ahern's NAICS code?

Ahern's NAICS code is 23 (Construction).

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.