ACCO Ranked 3rd Largest Mechanical Firm by ENR

PASADENA, Calif., Oct. 20, 2022 – ACCO Engineered Systems has been ranked on Engineering News-Record’s 2022 Top 600 Contractors in the United States.

#3 – Mechanical Firm

#18 – Overall Specialty Contractor


We would not be able to achieve these milestones without our incredible team, partners and customers.


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ENR’s 2022 Top 600 Specialty Contractors