Paid Parental Leave: Supporting you at every life stage with paid maternity and paternity leave
Wellness Programs: Access on-site fitness centers, personal development funds, and more
Professional Growth: Take advantage of education assistance, training programs, and development opportunities to advance your career
Incentives: A significant portion of our profits is shared with employees through bonus programs
Top-Tier Benefits: Our 401(k) match and health benefits rank in the top 20% nationwide
Work-Life Balance: Enjoy hybrid and flexible schedules to fit your needs
Generous PTO with the opportunity to buy additional time off
Mental Health Resources: Free, full-service mental health care for you and your family
Training + Development
Information not given or found
Interview process
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Visa Sponsorship
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Security clearance
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Company
Overview
$40M Revenue Growth
Revenue Increase
Achieved significant revenue growth following strategic investments in training and internal communications.
#3 Fire Protection
ENR Ranking
Ranked #3 in fire protection services by ENR (Engineering News-Record) in 2024.
#10 Sheet‑Metal
ENR Ranking
Ranked #10 in sheet-metal fabrication services by ENR (Engineering News-Record) in 2024.
Operates across the U.S. with 15+ offices, delivering mechanical systems and fire-protection services on major commercial and industrial sites.
Services span HVAC, plumbing, sheet-metal fabrication, building controls, fire sprinklers, alarms, and extinguishers.
Notable projects include high‑rise towers, data centers, healthcare facilities, and iconic structures like the Milwaukee Art Museum.
Founded in 1880 from a small plumbing and heating storefront in Fond du Lac, the company has grown into a national contractor.
Culture + Values
dedication to sustainability and social responsibility
pride in improving facilities with a positive environmental and community impact
Environment + Sustainability
#156 Environmental Firms
ENR Top 200 Ranking
Ranked #156 among ENR Top 200 Environmental Firms in 2024, up from #160 in 2022 and #193 in 2021, based on environmental services revenue.
50% Water Usage
Rainwater Supply Efficiency
Ahern Milwaukee office uses rainwater to supply 50% of its water usage, demonstrating innovative water conservation.
30% HVAC Efficiency
Energy Performance Improvement
HVAC efficiency improved by 30% at Ahern Milwaukee office, showcasing significant energy savings.
$21,000 Annual Savings
Energy Efficiency Investment
Corporate office expansion achieved estimated annual energy savings of $21,000, highlighting cost-effective sustainability initiatives.
Leading provider of sustainable design and construction with extensive involvement in LEED-certified projects.
Own facilities equipped with GPS-directed service fleet, reduce/reuse/recycle programs, optimized environmental control systems, reduced wastewater discharge and potable water demand.
LEED Gold certification for Fond du Lac headquarters and Milwaukee office.
Over 120 NICET-Certified professionals, 15 licensed PEs, 3 LEED APs on building energy solutions team.
Ahern Milwaukee office: 78% of construction waste recycled.
Ranked #156 among ENR Top 200 Environmental Firms in 2024 (up from #160 in 2022 and #193 in 2021) based on environmental services revenue.
Inclusion & Diversity
Data not publicly available on DEI strategy or gender-related statistics