Business Details
50+ Years
experience
Emergency
services
Trusted MEP/FP Engineering Solutions in Taunton, MA
Environmental Systems, Inc. (ESI) has been delivering innovative mechanical, electrical, plumbing, and fire protection solutions for commercial facilities across the Northeast for over 50 years. Founded in 1974, our commitment to quality, customer service, and employee welfare has established us as a trusted partner in the industry. With in-house engineering, design/build expertise, and state-of-the-art fabrication facilities, we streamline projects from concept to completion. Our 24/7 emergency service ensures uninterrupted operations for mission-critical environments, while our dedicated commissioning team guarantees system performance. Through strategic acquisitions and continuous investment in training and technology, we maintain leadership in complex HVAC, electrical, plumbing, and fire protection systems.Our team of over 200 professionals combines decades of experience with cutting-edge tools to deliver tailored solutions. From pre-construction planning to life safety inspections, we provide single-source accountability for every project phase. Recognized as a top workplace and one of Massachusetts' largest mechanical contractors, we remain family-owned and client-focused. Our 100,000 sq ft Taunton headquarters houses advanced training facilities, ensuring our technicians stay at the forefront of industry standards. For half a century, ESI has prioritized innovation, reliability, and community, making us the preferred choice for essential building systems.
Services
HVAC Systems
Electrical Services
Plumbing Solutions
Fire Protection
Commissioning
24/7 Maintenance
Design/Build Projects
Life Safety Inspections
Prefabrication
Specialty Projects
Details
- Year established: 1974
Highlights and features
- 50+ years of specialized MEP/FP experience in commercial construction
- In-house engineering and 80,000 sq ft fabrication facility
- 24/7 emergency service across New England
- Dedicated commissioning team ensures system performance
- Recognized as Top Workplace and MA's 5th largest mechanical contractor
Services
HVAC Systems
Design, installation, and maintenance of commercial HVAC systems. Our 50+ technicians provide 24/7 emergency service and preventative maintenance. Specializing in complex systems for laboratories, clean rooms, and critical facilities. Factory-trained experts ensure optimal efficiency and compliance.
Fire Protection
Comprehensive fire protection solutions including sprinkler systems, fire alarms, and life safety inspections. 24/7 emergency repair services with advanced equipment. Code-compliant installations and maintenance for commercial buildings and industrial facilities across New England.
Electrical Services
Full-service electrical contracting for commercial facilities. Capabilities include power wiring, LED retrofits, generator testing, and fire alarm systems. Licensed electricians provide 24/7 emergency service and support for new construction and retrofit projects.
Commissioning
Final phase verification of building systems. In-house engineers and technicians ensure HVAC, electrical, and plumbing systems operate as designed. Includes controls programming, start-up procedures, and balancing of air/water systems for optimal performance.
Design/Build Projects
Integrated design and construction solutions with single-source accountability. In-house engineering and 3D modeling capabilities streamline project timelines. Specializing in complex mechanical systems for healthcare, education, and industrial facilities across the Northeast.
People
Shawn Elliott
President / CEO
Shawn Elliott has led ESI for over 15 years, driving strategic growth and client relationships. With 20+ years in HVAC, he combines industry expertise with a client-focused approach. Holds degrees from UMass Amherst and ASHRAE membership.
Rene LaPorte
Vice President / Principal
Rene LaPorte oversees ESI's financial operations with 20+ years of industry experience. Manages accounts, contracts, and billing processes. Graduated from UMass Dartmouth and maintains corporate governance standards.
Questions
What services does Environmental Systems, Inc. offer?
We provide full-service MEP/FP engineering, construction, and maintenance including HVAC, electrical, plumbing, fire protection, and commissioning services for commercial facilities.
Do you offer emergency services?
Yes, we provide 24/7 emergency service across New England for all mechanical, electrical, plumbing, and fire protection systems.
How long has ESI been in business?
Environmental Systems, Inc. has served commercial clients since 1974, celebrating 50 years of operation in 2024.
What areas do you serve?
We operate throughout New England with offices in Taunton, MA; Nashua, NH; and Warwick, RI.
Can you handle complex commercial projects?
Yes, we specialize in complex systems for laboratories, clean rooms, MRI facilities, and critical environments with in-house engineering and fabrication capabilities.
Reviews (5)
Candace Barcelos
Mar 06, 2025
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The company is great overall, providing a range of services including HVAC, Fire Protection, plumbing, and electrical. They have a friendly staff that is responsive and attentive to needs. Their work is always completed in an efficient manner, making them very easy to work with.
Chris Mooney
Apr 01, 2022
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Seems like this is not the first time so complain about their driving on the highway. On 95 this morning doing about 6570 the fast lane guy in a truck nonstop with high beams Blake and them back-and-forth and laying on his horn for a good 10 to 15 minutes straight because I wouldn't move over when there was no space to move over. License plate number V40043 ma At about 540 this morning that's OK my uncle is a DOT inspector I'm gonna make sure they pay a visit to that location and I also have a few contacts for OSHA so good luck. I run a few warehouses in Boston In one out of Nashua New Hampshire in Portland Maine I'll make Sure I stop passing the word not to use this company
Dan Ivanov
Jul 13, 2021
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Their car REALLY cut me off on the Longfellow Bridge. I don't usually do this but this was pretty bad and obvious. Pretty sure it was car 158. If their installation is anything like their driving, then yikes.
Michael Barry
Nov 03, 2020
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I received a call from a very Important tenant stating that they have no A/C I call ESI office they sent out a service rep that Day I received a Quotation that night and they order the parts and fix our unit all with in (3) days I Highly Recommend them
Michael M.
Apr 14, 2020
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If you see one of their vans on the road, BE CAREFUL! This morning I saw one fly past me, doing at least double the speed limit if not more. In a residential neighborhood before dawn (minutes after 6 am), you know, when school buses are out and about. I don't think the owner wants to pay for speeding tickets on his vans!
