P.J. Kennedy & Sons takes on the complex process of multi-unit planning, construction and renovation of office buildings and multi-family homes. We employ our expertise and Building Information Modeling (BIM) design technology to deliver plumbing and HVAC systems on schedule and at top quality.

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.

"I have had the pleasure to use the mechanical services of P.J. Kennedy & Sons for over fifteen years and no matter how difficult the job is the management and staff always have the “can do” attitude when meeting any challenge."

Chris Gorman
Able Engineering Services

"Consistently one of the better mechanical contractors to bid work for the city. Their staff and workforce are always professional and provide excellent work on every project. They recently concluded and emergency boiler installation project for the city and the project could not have been better. They are one of only a few firms I always reach out to when putting a project out to bid."

Tom Leahy
Public Facilities Department, City of Boston

"We have worked with P.J. Kennedy & Sons on various projects over the last two decades. The most recent project was a two million dollar heating system conversion at Orient Heights, Boston, MA. Orient Heights contained one hundred and thirty eight units of occupied housing. The job was completed on time and with minimum interruption to tenants."

Bruce McRitchie
President, McRitchie Engineering