Welcome to J.S. Mortimer, Inc.

We are a Design-Build Mechanical Contracting firm located in Central Massachusetts. We serve the needs of industrial, commercial, and high-end residential clients throughout New England. We have built our reputation on our obsession with customer satisfaction and our commitment to integrity.

Our strengths and capabilities:

. Heating, ventilation, and air-conditioning installation and repair
. Plumbing installation and service
. Complete design-build capabilities
. Gas and process piping
. Medical gas piping
. Sheet metal ductwork
. Chilled, hot water and steam piping
. Preventative maintenance agreements
. LEED AP certified

Our Design-Build commitment:

Mortimer's in house design team builds a relationship with clients to assure that we are addressing their individual needs. Our customers are confident that we are not only providing what is required by code, but that we have explored every avenue of system efficiencies, energy rebates, and functionality of the plumbing and HVAC system for the specific facility.

Mortimer's commitment to "on time, within budget" gives our clients a comfort level that allows them the freedom to concentrate on their own business during the construction process. They are confident that we will handle any and all mechanical issues with their best interest in mind and provide them with a top quality installation.

We stand behind our systems throughout the years and continue to support our clients ever changing Plumbing and HVAC needs, while strengthening our relationships.


Webster First Federal Credit Union

A newly constructed 85,000 sq.ft. facility In Worcester, MA. State of the art HVAC and Plumbing systems.

Worcester Art Museum

Complete mechanical upgrade of the museums world renowned Renaissance Court exhibit areas.

View Other Projects