P.J. Kennedy & Sons is a flexible and versatile mechanical contractor, and we use our creative and problem-solving talents on a wide variety of projects. See more of our work in the jobs below.

With a pre-fabrication facility and 24-hour service team for emergencies, we’re equipped to take on all of our educational client’s mechanical needs at every stage. We have many long-term relationships with our education customers.

Family owned and operated for 3 generations, we treat our employees and our customers like one or our family. Every part of our team from our office staff to the workers in the field are dedicated to the overall success of each educational project we’re a part of.

Our customers tell us what sets P.J. Kennedy & Sons apart, is our decades of experience, skilled union employees and our reputation for reliability. We’re masters at collaborating with other trades to get jobs done on time and on budget.

Local 537 Pipefitters Union Logo

Proud union contractor

Pipefitters Local 537

Plumbers UA Local 12 Boston Logo

Proud union contractor

Plumbers Local Union 12

Tell us About Your Next Project

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Our Mechanical Contracting Services Include:
  • HVAC

    Design, prefabricate and installation of HVAC and piping systems.

  • Plumbing

    Design, prefabricate and installation of plumbing systems. 

  • BIM/Pre-Fabrication

    Using BIM software, we ensure project design and timing is coordinated.

  • Building Controls

    Building control design and installation. New construction or retrofit.

  • Maintenance

    Preventative maintenance contracts

  • 24 Hour Service

    Emergency plumbing, heating and air conditioning service.

"The working relationship between the City, General Contractor and P.J. Kennedy & Sons was honest, open and communicative. The workmanship and dedication of their onsite staff was always appreciated. I worked with P.J. Kennedy & Sons for the first time in 2001, as a general contractor, and see no difference in their attitude towards excellence in responsiveness and service to a project. They have been one of the best HVAC contractors I have worked"

Michael J. Black
City of Cambridge

"I have nothing but high praise for their entire team and the quality of the finished project(s). Their entire staff performed their work in the most professional manner, great attitude, superior – workmanship, communication, cooperation and willingness to be a team player with all members of the construction and design teams. They have always been there with support well after the schools have been turned over to us."

David Dunkley
Woburn Public Schools

"P.J. Kennedy & Sons provided the HVAC and temperature control work for the new Everett High School. P.J. Kennedy & Sons is conscientious of their work while conforming to the plans and specifications. Their performance, proficiency, and workmanship were superior. They provided the manpower and equipment required to complete activities as shown in the construction schedule."

Frank Geary
Suffolk Construction