Environmental Systems Corporation
Environmental Systems Corporation is a West Hartford, CT-based building systems contractor (founded 1972, subsidiary of Fidelity BSG since 2023) delivering integrated building automation, security, life safety, energy, AV, and mechanical services to commercial, healthcare, education, government, and industrial customers across the Northeast.
- Company typePrivate
- Founded1972
- HeadquartersWest Hartford, United States
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Environmental Systems Corporation does
Environmental Systems Corporation (ESC) is a Connecticut-based building-integrated systems contractor founded in 1972, operating as a wholly-owned subsidiary of Fidelity Building Services Group since July 2023. The company delivers six interrelated service lines — building automation, security, life safety, energy solutions, audio visual, and mechanical services — to commercial, industrial, healthcare, education, government, and municipal customers across the Northeast, with a primary concentration in Connecticut and New England. Its core technical offering centers on integrated HVAC building management systems, variable frequency drives (VFDs), LED lighting retrofits, and, post-2024, compressed air system optimization (via the acquired Compressor Energy Services subsidiary and its AIrAnalytics metering platform).
ESC's revenue model is professional services–driven and project-based: it designs, procures, installs, and maintains turnkey building technology projects, acting as a liaison between facility owners and utility partners (notably Eversource Energy) to capture utility rebates and incentives that materially reduce customer project costs (e.g., 37% project cost offset on the New Haven Free Public Library LED upgrade, $541K utility incentive on the Mystic Aquarium project). The company supplements this with government contract revenue through Connecticut Department of Administrative Services agreements (Audio Visual No. 19PSX0015; Energy Efficiency Retrofits No. 18PSX0104) and post-installation service and maintenance. Recent expansion has pushed ESC into adjacent verticals — EV charging infrastructure, solar PV installation, and industrial compressed air — broadening the addressable market beyond its traditional HVAC-automation core.
The business is operated as a regional center of excellence within Fidelity BSG's Energy & Sustainability Group, providing ESC access to a national platform spanning 30 states, 70+ locations, and 2,800+ team members. Leadership transitioned in 2024-2025 with Mike Mullin (President, January 2024) retiring and Mike Amedeo (30+ years industry experience, joined ESC 2009) promoted to President in July 2025. ESC has no public revenue disclosure, no public pricing, and no platform/API offerings; it is fundamentally an implementation and services business rather than a software product company.
Environmental Systems Corporation firmographics
Firmographics- Name
- Environmental Systems Corporation
- Legal name
- Environmental Systems Corporation
- Website
- https://esccontrols.com
- Company type
- Private
- Founded year
- 1972
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Environmental Systems Corporation is a West Hartford, CT-based building systems contractor (founded 1972, subsidiary of Fidelity BSG since 2023) delivering integrated building automation, security, life safety, energy, AV, and mechanical services to commercial, healthcare, education, government, and industrial customers across the Northeast.
- Ownership category
- akta.pro rank
Environmental Systems Corporation industry classification
Industry- Product category
- Building Technology and Energy Efficiency Services
- NAICS
- Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Environmental Consulting Services (541620), Engineering Services (541330)
- SIC
- Auto Controls For Regulating Residential & Comml Environments (3822), Industrial Instruments For Measurement, Display, And Control (3823), Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Sustainability & ESG Consulting (BPAHACAK)
- akta.pro secondary industries
- Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB), Power Plant I&C / SCADA / DCS EPC (EUAEAAAN)
Keywords
Where Environmental Systems Corporation is headquartered
LocationHeadquarters
- HQ city
- West Hartford
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Environmental Systems Corporation business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales
Revenue model
- Energy Efficiency Project Services: ESC designs and implements comprehensive energy efficiency projects for facility owners, acting as liaison between customers and utility companies to secure incentives and rebates. Projects include LED lighting upgrades, HVAC improvements, steam system upgrades, and compressed air optimization.
- Government Contract Services: ESC holds Connecticut DAS contracts for Audio Visual (No. 19PSX0015) and Energy Efficiency Retrofits (No. 18PSX0104), allowing state agencies and local entities to purchase products and services through the BizNet portal.
- Compressed Air Services: Through acquired Compressor Energy Services, ESC provides turnkey design and implementation services for compressed air system optimization with guaranteed energy savings and utility incentive capture.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
Environmental Systems Corporation product offering
Product offeringCore offering
Environmental Systems Corporation is a building-integrated systems contractor that designs, installs, and maintains intelligent building technology solutions across six service divisions: Building Automation, Security, Life Safety, Energy Solutions, Audio Visual, and Mechanical Services. The company delivers turnkey energy efficiency and building performance projects for commercial, industrial, healthcare, education, government, and municipal customers, acting as a liaison between facility owners and utility companies to capture incentives. Through its acquired Compressor Energy Services subsidiary, ESC also provides specialized compressed air system optimization for large industrial facilities.
Product overview
Environmental Systems Corporation (ESC) is a building-integrated systems contractor offering a portfolio of six core service divisions that work together to enhance building performance. The company provides Building Automation, Security, Life Safety, Energy Solutions, Audio Visual, and Mechanical Services as integrated, complementary offerings. In 2024, ESC expanded its Energy Solutions Group through the acquisition of Compressor Energy Services (CES), adding specialized compressed air system optimization capabilities including AIrAnalytics. The company serves commercial, industrial, healthcare, education, government, and municipal markets throughout the Northeast, operating as a subsidiary of Fidelity Building Services Group since 2023.
Differentiator
Problem solved
Functional benefit
Products and services
- Building Automation Intelligent building control systems that optimize HVAC operations, lighting, and overall building performance through integrated controls and automation technology for commercial, industrial, and institutional facility owners.
- Security Systems
- Life Safety and Fire Alarm Systems
- Energy Solutions
- Audio Visual Integration
- Mechanical Services
- Compressed Air System Optimization (Compressor Energy Services)
- EV Charging Infrastructure
- Solar PV Installation
Quantifiable outcome
- Reduced annual electricity usage by 650,000 kWh per year at Mystic Aquarium
- +4 more outcomes
Companies that use Environmental Systems Corporation
Customer profileNamed customers11 records
Segments5 records
Ideal customer profiles3 records
Environmental Systems Corporation technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Environmental Systems Corporation partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- Compressor Energy Services (CES)coreESC acquired Compressor Energy Services in May 2024. CES specializes in optimizing compressed air systems in large industrial facilities with 30+ years of experience, 2,000+ assessments conducted, and over $30 million in utility incentives secured for customers. Typical ROI of 65% with simple paybacks under two years.
- Associated Electronic Systems (AES)coreESC acquired Associated Electronic Systems in April 2018, strengthening ESC's security and fire alarm capabilities. AES was privately held based in East Hartford, CT with focus on commercial, industrial, and governmental facilities. Both companies served the marketplace for over 45 years in security, life safety, and system integration.
- Eversource EnergycoreEversource Energy is a key utility partner for ESC's energy efficiency projects. ESC acts as liaison between customers and Eversource to secure utility rebates and incentives. ESC works with Eversource to promote energy conservation programs in CT, MA, and NH territories.
- Connecticut Green BankcoreConnecticut Green Bank provides financing solutions including C-PACE and Solar PPA programs. Awarded ESC the C-PACE and Solar PPA Outstanding Project Award for the Mystic Aquarium project, which saved an estimated $1.8 million over the expected useful life of measures.
- Verogy SolarminorSolar project partner for the Mystic Aquarium project, providing new roof and solar array installation in collaboration with ESC's energy efficiency solutions.
- HoneywellcoreESC is a Honeywell partner for fire and life safety systems. ESC's Fire Team earned Honeywell's prestigious Fire Partner Award for exemplary partnership, hitting sales marks, and providing customer feedback and support for Honeywell technology.
Scale indicators5 records
Recent moves7 records
Expansion highlights6 records
Environmental Systems Corporation competitors and assessment
Company assessmentDirect peers
- Ameresco: Ameresco is a publicly traded energy efficiency and renewable energy services contractor that designs and implements LED, HVAC, and building automation retrofits funded via utility incentives and ESPC structures — a near-identical GTM model to ESC's Energy Solutions practice, including compressed air and industrial efficiency work.
- Willdan Group: Willdan provides energy consulting, engineering, and turnkey efficiency retrofit services to public agencies and utilities, mirroring ESC's CT DAS-style contracting and Eversource incentive capture model across education, municipal, and healthcare customers.
- Cenergistic: Cenergistic delivers energy management and building optimization services for K-12 and higher education, healthcare, and government customers, comparable to ESC's education and healthcare efficiency retrofits combined with building management system work.
- Comfort Systems USA: Comfort Systems USA is a national mechanical and electrical contractor delivering HVAC, plumbing, and building automation services to commercial and industrial customers — directly overlapping with ESC's mechanical services and building automation divisions.
- EMCOR Group: EMCOR is a leading provider of mechanical and electrical construction, energy, and facilities services with deep building automation capability, comparable to ESC's combined mechanical, electrical, and controls offering for commercial, industrial, and government customers.
Broad incumbents
- Honeywell Building Technologies: Honeywell's Building Technologies division is a global BMS, fire/life safety, and security platform — the OEM behind much of ESC's installed base and the source of ESC's Honeywell Fire Partner Award, representing both a partner and a much larger competitor.
- Johnson Controls: Johnson Controls is a global incumbent in building automation, HVAC, fire, and security, offering integrated Metasys/CCI platforms and services that overlap ESC's full six-line portfolio at substantially greater scale and brand recognition.
- Trane Technologies: Trane Technologies provides HVAC equipment, building automation (Tracer/Trane BMS), and energy services to commercial buildings — directly competing with ESC's HVAC, controls, and energy efficiency offering from a much larger OEM-driven base.
- Schneider Electric (EcoStruxure): Schneider Electric's EcoStruxure platform delivers building automation, power management, and energy monitoring solutions, competing with ESC on BMS and energy optimization work for commercial and industrial facilities.
- Siemens Smart Infrastructure: Siemens Smart Infrastructure offers Desigo CC and Navigator-based building automation, fire safety, and energy management at global scale, directly overlapping ESC's BMS, life safety, and energy solutions offerings.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Environmental Systems Corporation social profiles
Digital presenceEnvironmental Systems Corporation compliance and trust
Trust signalCompliance6 records
Environmental Systems Corporation financial estimates
Financial estimateRevenue estimate
Valuation estimate
Environmental Systems Corporation leadership team
Management profileNumber of profiles
Profiles5 records
Environmental Systems Corporation subsidiaries and ownership
Company hierarchySubsidiaries1 record
Environmental Systems Corporation funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Environmental Systems Corporation M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Environmental Systems Corporation
What does Environmental Systems Corporation do?
Environmental Systems Corporation is a building-integrated systems contractor that designs, installs, and maintains intelligent building technology solutions across six service divisions: Building Automation, Security, Life Safety, Energy Solutions, Audio Visual, and Mechanical Services. The company delivers turnkey energy efficiency and building performance projects for commercial, industrial, healthcare, education, government, and municipal customers, acting as a liaison between facility owners and utility companies to capture incentives. Through its acquired Compressor Energy Services subsidiary, ESC also provides specialized compressed air system optimization for large industrial facilities.
Is Environmental Systems Corporation a public or private company?
Environmental Systems Corporation is a private company. It is classified as corporate owned and is currently operating.
When was Environmental Systems Corporation founded?
Environmental Systems Corporation was founded in 1972. It employs 51 to 100 people.
Where is Environmental Systems Corporation based?
Environmental Systems Corporation is headquartered in West Hartford, United States, in the North America region.
How does Environmental Systems Corporation make money?
Three revenue lines are on record. Energy Efficiency Project Services are the primary driver. The others are government Contract Services and compressed Air Services.
Who are Environmental Systems Corporation's main competitors?
Direct peers on record are Ameresco, Willdan Group, Cenergistic, Comfort Systems USA and EMCOR Group. Broad incumbents are Honeywell Building Technologies, Johnson Controls, Trane Technologies, Schneider Electric (EcoStruxure) and Siemens Smart Infrastructure.
Does Environmental Systems Corporation have an API?
No public API is recorded for Environmental Systems Corporation.
What industry is Environmental Systems Corporation in?
Environmental Systems Corporation's product category is Building Technology and Energy Efficiency Services. Its primary akta.pro industry code is BPAHACAK, Sustainability & ESG Consulting, with a secondary code of EUAEADAB, Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting). Its NAICS code is 334512 and its SIC code is 3822.