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Since 1930, van Zelm has been developing unsurpassed solutions for the design of mechanical and electrical engineering systems in the built environment.

Each project presents unique challenges and opportunities, and we apply our considerable experience to each seeking innovative solutions consistent with the client’s requirements. Our attention to detail, our energy-conscious approach, our prompt resolution of construction problems, and follow-up even beyond construction, result in successful outcomes for our clients.

van Zelm’s focus on integrity was instilled in the firm by our founder. Integrity – linked with innovation – results in superior designs, tighter quality control, and consistent communication. We know that our dedication to integrity and trust are every bit as important as innovative engineering design. We believe this staunch commitment ensures that our firm, like our projects, will endure.

On the Boards
In Construction

Paragon Medical


Cambridge School of Weston Garthwaite Center for Science and Art


MassWildlife Field Headquarters

Pilot House – Energy Modeling For Leed


Griffin Hospital Renovation

Capewell - Interior

Capewell Lofts

Darien High School

Wesleyan University New Science Center

Macalester College Institute For Global Citizenship

A National Corporate Office


Hotchkiss School Biomass Heating Plant


Yale-New Haven Hospital 55 Park Street Building

Mount Holyoke College, Creighton Residence Hall

Amherst College Science Center

Amherst College – The Science Center

Gruss Arts Center Renovation/expansion – Lawrenceville School

Dartmouth College – Arthur L. Irving Institute for Energy & Society

Harvard University – Harkness Commons

Harvard University Science & Engineering Complex


Dartmouth College Class of 1978 Life Sciences Center

Smith College Ford Hall Engineering and Molecular Sciences Building


Ethel Walker School Centennial Hall

Bowdoin College – Schiller Coastal Studies Center Expansion

The Learning Corridor

Tufts Science And Engineering Complex

Waterbury Palace Theater

Wesleyan College Boger Hall

Dartmouth Class of 1982 Engineering and Computer Science Center



Cornell University – Johnson Graduate School Of Management Additions And Renovations To Sage Hall

Bushnell Performing Arts Center – Belding Theater Expansion

Central Connecticut State University – New Engineering Building

UMASS - Crotty Hall

UMass Amherst – Crotty Hall

LAZ Parking

Hartford Public Safety Complex


Parker Hannifin Skinner Valve Division

Trinity College Raether Library Major Renovations


Wesleyan University Usdan Student Center

Dartmouth College, Anonymous Hall Academic Renovation & Expansion

University of Connecticut Health Center Medical Arts and Research Building

Framingham State University – West Hall


Tufts University – Campus Central Energy Plant

Virtus Investment Partners