P.J. Kennedy & Sons offers dedicated, responsive 24-hour service for emergencies, as well as full HVAC service and preventive maintenance contracts and complete commercial plumbing, heating and air conditioning service.

Founded in 1925, P.J. Kennedy & Sons is a 3rd generation business. Our core principal has always been to treat our employees and our customers like they're one of our family. We pride ourselves on building real relationships, and have a well earned reputation for integrity, quality and performance.

With a pre-fabrication facility and 24-hour service team for emergencies, we’re equipped to take on all of our client’s mechanical needs at every stage.

With decades of experience and the latest industry technology, P.J. Kennedy & Sons is dedicated to the success of every project. We’re masters at collaborating with other trades to get jobs done on time and on budget.

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Proud to be a union contractor signatory to

Pipefitters Local 537 in Boston

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"P.J. Kennedy & Sons have always responded promptly and professionally to address the critical needs of the State Police infrastructure to support the 24/7 critical Public Safety needs of our facilities including the Barracks, State Police Crime Labs, General Headquarters Complex and Training Academy. Their entire staff performs 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 Massachusetts State Police.  "

Paul Hession, P.E.
Director of Facilities and Capital Projects, MA State Police

"P.J Kennedy & Sons have been working with me for over 17 years at various facilities. P.J. Kennedy & Sons has a strong staff of leaders who are always willing to go the extra mile. They are able to solve issues no matter what barriers are present. P.J. Kennedy & Sons meets all deliverables and brings closure in a timely fashion. The commitment to quality work is unsurpassed and I have 100% confidence in their abilities to deliver efficiently and on time. They are my go-to vendor! "

Jim Gagne
Assitant Manger - Plant Operations, North Shore Medical Center

"I have worked with P.J. Kennedy & Sons for quite some time, in fact since 1984 or so. This company has earned my respect and trust after having completed many projects for the City of Boston. "

Tom Leahy
Public Facilities Department, City of Boston