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Support construction safety field efforts, including inspections, training, policy development, and regulatory compliance in Rochester, MN region. Contribute to continuous improvement journey.
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
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