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The leading Mechanical Contractors & Engineers in Massachusetts.

Hamel & McAlister has a strong commitment to customer satisfaction as well as maintaining our reputation as technical experts.

Hamel & McAlister prides itself in being involved with some of the most sophisticated projects.

We are proud to say that we have coverted more than 90% of our construction clients to various levels of service / maintenance clients.


Independently owned Mechanical Contractor providing first class services.

Industry Leader

Leader in the industry by providing our customers with excellent service, integrity and professionalism.

Highly Qualified

The highest trained personnel in Project Management, Estimating and Field Personnel projects.

Feature Projects

Pfizer at 610 Main Street, Cambridge, MA

Recent new construction of a 230,000 square foot multidisciplinary research facility, used for innovative collaborations between MIT and Pfizer.

LEED Gold Certified Building

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Avalon Exeter Apartments

Completed new construction of a 28-story, high-rise luxury apartment development in Boston's Back Bay.

LEED Silver Certified Building

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111 Huntington Ave, Boston, MA

Completed new construction of one of Boston's largest buildings, a 36-story office skyscraper in one of Boston's most active retail locations.

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Karp Research Building

295,000 square foot medical research facility for Boston's Children's Hospital.

LEED Gold Certified

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Commercial Heating, Ventiliation, and Air Conditioning

Hamel & McAlister, Inc. provides Commerial and Industrial Mechanical Contracting services to clients in the Greater Boston Area.  We are signatory to the Local 537 Pipefitter's Union. 

24 hour emergency service

special projects division

comprehensive preventive maintenance program

design build capabilities

factory trained service technicians

NEBB certified air and water balancing

environmentally certified

About us

Established in 1994, Hamel & McAlister is an Independently owned Mechanical Contractor providing first class service to General Contractors, Developers, Institutional, and Health Care clients.

Hamel & McAlister continues to be a leader in the industry by providing our customers with excellent service, integrity and professionalism…on time and on budget

Let's discuss your project!