Duggan: 2018 Best Contractors to Work For: 128-Year-Old HVAC Contracting Company Continues the Family Legacy

In 128 years and five generations, Canton, Massachusetts-based E.M. Duggan Inc. hasn't lost its business principles or its family-friendly culture. The mechanical contracting company specializes in plumbing, HVAC, and fire protection and offers preconstruction, CAD, and prefabrication services to its clients in the commercial and industrial markets.