P.J. Kennedy & Sons is a leader in commercial heating, ventilating and air conditioning systems. Our skilled union workers have installed thousands of systems in schools, universities, multi-story apartments, condominiums and more. Our team of dedicated CAD/BIM designers, project managers have the skills to tackle virtually all commercial HVAC projects.

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.

Local 537 Pipefitters Union Logo

Proud to be a union contractor signatory to

Pipefitters Local 537 in Boston

Tell us About Your Next Project

  • This field is for validation purposes and should be left unchanged.

"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

We recently worked with P.J. Kennedy & Sons on a Boston Fire Department Air Conditioning project with the City of Boston. The project was successfully completed on time with no change orders, we give credit to P.J. Kennedy & Sons for the success of this project. They performed the work in a professional and timely manner; it was refreshing to work with a Contractor that simply performed the work required to complete the job without delay or issue. We highly recommend P.J. Kennedy & Sons, Inc and look forward to working with them on future endeavors.

Carlos G. DeSousa, P.E.
Garcia, Galuska & DeSousa, Inc.