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Design-Build Mechanical Contracting and Commercial HVAC across Massachusetts

A family owned business since 2000. In house design led by a licensesd Profressional Engineer (PE) on staff, backed by an unwavering commitment to quality and customer satisfaction.

About Us

​For over two decades, J.S. Mortimer, Inc. has partnered with commercial, industrial, and institutional facility managers across Massachusetts. We bridge the gap between complex engineering concepts and field execution—delivering comprehensive mechanical solutions from initial load calculations to full-scale mechanical installation and ongoing lifecycle service.

Complex Environment Expertise

 

We specialize in mission-critical facilities with zero room for error—including active healthcare wings, research laboratories, art museums, and institutional boiler plants.

Single-Source Accountability

 

From preliminary design and permitting through industrial pipefitting and equipment startup, having in-house engineering means fewer change orders, faster approvals, and a direct line of communication.

 

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Mechanical Support

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Quality extends far beyond system install. Our service and start up technicians are widely regarded as the best in New England, bringing over 30 years of field-tested trade experience to every emergency call, diagnostic check, and preventive maintenance inspection.

Leadership & OfficeTeam

Expertise. Reliability. Integrity

Family-owned since day one, our leadership team sets the standard for how we do business across Massachusetts. We believe open communication and long-term relationships start from the top, and we take pride in being a dependable partner you can always reach directly.

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CEO & Founder

Jack Mortimer

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President & Professional Engineer (PE)

Mike Mortimer

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Vice President

Matt Mortimer

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Director of Operations

Julie (Mortimer) Wall

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Office Manager

Doe Mortimer

SERVICES

OUR SERVICES

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Design Build Commitment

Our reputation is built on quality. We take pride in our work and stand behind it.

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Service &
Maintenance

Our experienced Service team  provides 24-hour support. We ensure satisfaction by always putting the customer first.

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Mechanical Infrastructure Upgrades

Upgrade your Mechanical Infrastructure with our expert engineering and industrial pipe fitting services.

EXPERIENCE

COMMERCIAL

We have extensive experience in various commercial facilities and institutions ranging from art museums and religious institutions to office spaces.  We pride ourselves on our customer relationships and our ability to work in all facilities. We are confident we can find the right HVAC solution for each space.

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INDUSTRIAL

We have completed countless projects in industrial facilities over our 20+ years.  Whether for manufacturing, distribution, or warehousing, we will determine the best HVAC system for the space to meet the customer’s needs both functionally and financially.

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LABORATORIES & PROCESSES 

Our design team has in depth experience with laboratory design and our field personnel is experienced in the complex installation.  We understand the complexity and challenges inherently associated with laboratory projects and work closely with the owners and laboratory staff to determine the most appropriate systems for the space usage. If working in an existing lab, we always make sure to work carefully to not disrupt the processes.  Our field personnel is also experienced with process and gas piping.

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EDUCATION

Over the 20+ years we have been in business, the education field has been one of our largest groups of projects.  We have in depth experience in both the installation and service for all levels of education including universities, high schools, elementary schools, private, public, and specialty education.  We always make sure to accommodate the challenges facing educational facilities such as critical schedules and cost.

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HEALTHCARE

Similar to laboratory projects, healthcare facilities often have similar challenges that our in-house design staff and field personnel are both very experienced with.  We work closely with the owner to determine the appropriate HVAC systems for the space usage.

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PROJECTS

SOME OF OUR VALUED CUSTOMERS

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CLIENTS

CONTACT

Inquiries

For any inquiries or questions, please call: 508-832-9229 or fill out the following form

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Main Office

13 Rockland Rd. 

Auburn, MA 01501

 

CEO: Jack Mortimer

Contact: jack@jsmortimer.com

 

President: Michael Mortimer, P.E.

Contact: mike@jsmortimer.com

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Vice President: Matt Mortimer

Contact: matt@jsmortimer.com

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Tel: 508-832-9229

Employment

To apply for a job with J.S. Mortimer,Inc., please send a Resume to: jack@jsmortimer.com

CONTACT
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