Mazzetti is an employee-owned Benefit Corporation and engineering and technology consultancy focused on healthcare, life sciences, and the built environment. Its work connects building performance with human and environmental health, with a mission to help bend the climate curve through practical planning, design, research, and decarbonization.

The firm offers a broad range of services, including mechanical, electrical, and plumbing engineering; energy infrastructure; intelligent environments; lighting design; medical equipment planning; technology consulting; commissioning and retro-commissioning; and facility optimization. Its sustainability work includes renewable energy development, resilience consulting, and decarbonization planning. Mazzetti supports projects such as hospitals, medical campuses, microgrids, central plants, and airport facilities, helping clients plan and improve complex environments.

Through applied research, pilot projects, education, and policy engagement, Mazzetti also explores solutions for healthcare, energy, and the built environment. As a Benefit Corporation, it says its success is measured not only by business performance, but also by its impact on employees, clients, communities, and the environment. The company shares project examples, insights, and career opportunities through its website.