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Insights

Healthcare Infra Target ESI’s extensive experience with laboratories, clean rooms, and MRI facilities to cross-sell advanced HVAC and environmental control solutions for healthcare and research institutions in New England.

Public Recognition Leverage ESI’s strong employer branding and Top Workplace awards to position reliability and quality in contractor services when approaching prospective clients, especially universities and biotech labs seeking reputable partners.

Regional Expansion Capitalize on ESI’s multi-state footprint (Massachusetts, New Hampshire, Rhode Island) to offer comprehensive regional service agreements, maintenance networks, and rapid-response support for facilities with scattered campuses or sites.

Financial Scale With revenue in the 100M–250M range and a robust project history, present scalable energy efficiency upgrades, retrofits, and turnkey mechanical systems programs to large commercial, educational, and research customers.

Digital & Ops Use ESI’s tech stack to propose cloud-based maintenance, data analytics for system performance, and streamlined procurement integrations to optimize project delivery and facilities management for end users.

Similar companies to Environmental Systems, Inc.

Environmental Systems, Inc. Tech Stack

Environmental Systems, Inc. uses 8 technology products and services including Sage Intacct, WordPress, Shopify, and more. Explore Environmental Systems, Inc.'s tech stack below.

Media & News

Environmental Systems, Inc.'s Email Address Formats

Environmental Systems, Inc. uses at least 5 email formats:
Environmental Systems, Inc. Email FormatsExamplePercentage
FLast@esihvac.comJDoe@esihvac.com
99%
LFirst@esihvac.comDJohn@esihvac.com
1%
FLast@envsys.netJDoe@envsys.net
90%
Last@envsys.netDoe@envsys.net
6%
LFirst@envsys.netDJohn@envsys.net
4%

Frequently Asked Questions

What is Environmental Systems, Inc.'s phone number?

Minus sign iconPlus sign icon You can contact Environmental Systems, Inc.'s main corporate office by phone at
+1-508-226-****
. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Environmental Systems, Inc.'s stock symbol?

Minus sign iconPlus sign iconEnvironmental Systems, Inc. is a publicly traded company; the company's stock symbol is TSTA.

What is Environmental Systems, Inc.'s official website and social media links?

Minus sign iconPlus sign iconEnvironmental Systems, Inc.'s official website is esihvac.com and has social profiles on LinkedIn.

How much revenue does Environmental Systems, Inc. generate?

Minus sign iconPlus sign icon As of October 2026, Environmental Systems, Inc.'s annual revenue is estimated to be $100M - $250M.

What is Environmental Systems, Inc.'s NAICS code?

Minus sign iconPlus sign iconEnvironmental Systems, Inc.'s NAICS code is 3332 - Industrial Machinery Manufacturing.

How many employees does Environmental Systems, Inc. have currently?

Minus sign iconPlus sign iconAs of October 2026, Environmental Systems, Inc. has approximately 146 employees across 4 continents, including North America, Europe and Africa. Key team members include President: B. J., President: M. S. and Managing Partner: J. F. Explore Environmental Systems, Inc.'s employee directory with LeadIQ.

What industry does Environmental Systems, Inc. belong to?

Minus sign iconPlus sign iconEnvironmental Systems, Inc. operates in the Industrial Machinery Manufacturing industry.

What technology does Environmental Systems, Inc. use?

Minus sign iconPlus sign iconEnvironmental Systems, Inc.'s tech stack includes Sage Intacct, WordPress, Shopify, Microsoft 365, Headroom.js, jQuery Migrate, Elementor and DigitalOcean Web Hosting.

What is Environmental Systems, Inc.'s email format?

Minus sign iconPlus sign iconEnvironmental Systems, Inc.'s email format typically follows the pattern of FLast@esihvac.com. Find more Environmental Systems, Inc. email formats with LeadIQ.

When was Environmental Systems, Inc. founded?

Minus sign iconPlus sign iconEnvironmental Systems, Inc. was founded in 1974.
Environmental Systems, Inc. logo

Environmental Systems, Inc.

Industrial Machinery ManufacturingMassachusetts, United States51-200 Employees

Environmental Systems, Inc. (ESI) is a mechanical contractor and engineering firm based in Taunton, Massachusetts, with additional offices in Nashua, New Hampshire, and Warwick, Rhode Island. The company provides comprehensive HVAC services that cover every project phase, from design and pre-construction through installation, service, and ongoing maintenance across New England. Over five decades in business, ESI has completed more than 10,000 commercial projects and delivered HVAC systems for more than 2.5 million square feet of laboratories and clean rooms, as well as more than 70 MRI facilities.

ESI serves the regional market for industrial and institutional facilities, including colleges and universities, laboratories, healthcare, and other commercial sectors that require complex HVAC solutions. With a mid-sized footprint, the company operates as a mechanical contracting and engineering firm serving the New England region. The firm has received recognition for workplace excellence, including honors as a Top Place to Work in Massachusetts and on the Top Workplaces USA list.

Section iconCompany Overview

Phone number
+1-508-226-****
Website
esihvac.com
Stock Symbol
TSTA
NAICS Code
3332 - Industrial Machinery Manufacturing
Founded
1974
Employees
51-200

Section iconMedia & News

Section iconFunding & Financials

  • $100M - $250M

    Environmental Systems, Inc.'s revenue is estimated to be in the range of $100M - $250M

Company Leadership

  • President at Environmental Systems, Inc.
    B. J.
    President
    Mobile Phone
  • President at Environmental Systems, Inc.
    M. S.
    President
    Mobile Phone
  • Managing Partner at Environmental Systems, Inc.
    J. F.
    Managing Partner
    Mobile Phone
  • Owner at Environmental Systems, Inc.
    R. G.
    Owner
    Mobile Phone
  • Director Of Corporate Education at Environmental Systems, Inc.
    E. A.
    Director Of Corporate Education
    Mobile Phone

Employee Directory

  • Project Manager at Environmental Systems, Inc.
    B. S.
    Project Manager
    Mobile Phone
  • Office Manager at Environmental Systems, Inc.
    C. B.
    Office Manager
    Mobile Phone
  • Operations Manager at Environmental Systems, Inc.
    C. H.
    Operations Manager
    Mobile Phone
  • Manager Ehs at Environmental Systems, Inc.
    D. P.
    Manager Ehs
    Mobile Phone
  • Project Manager at Environmental Systems, Inc.
    J. L.
    Project Manager
    Mobile Phone

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