Business Details
50+ Years
experience
Emergency
services
Trusted HVAC & Facilities Services in South Windsor, CT
New England Mechanical Services (NEMSI) has been delivering comprehensive facilities solutions across Connecticut and the Northeast for over 50 years. Specializing in HVAC systems, electrical services, and building automation, we combine cutting-edge technology with personalized client care to address both standard and mission-critical needs. Our team of LEED-accredited professionals and licensed technicians ensures optimal building performance through engineering, design, installation, and maintenance services. Recognized with industry awards like the ABC Pyramid Award and NESCA Gold Safety Award, we prioritize safety, innovation, and energy efficiency.With a fleet of 300+ service vans and 24/7 emergency response capabilities, we provide reliable, single-source solutions for commercial, healthcare, educational, and industrial facilities. Our commitment to quality is reflected in long-term client relationships and projects that generate measurable savings, such as $1M annually in energy costs for Hartford 21. Backed by EMCOR Group, Inc., we maintain rigorous compliance with ANSI/NFPA standards and offer tailored preventive maintenance programs to ensure client facilities remain comfortable, productive, and profitable.
Services
HVAC Repair
Electrical Services
Building Automation
Facilities Maintenance
Infrared Thermography
Emergency Response
Energy Audits
Plumbing Systems
Sheet Metal Fabrication
Tenant Build-Outs
Details
- Year established: 1975
Highlights and features
- Over 50 years of experience serving Connecticut and the Northeast
- Five LEED-accredited professionals on staff
- 24/7 emergency response with 300+ service vans
- Recipient of 2024 NESCA Gold Safety Award
- National Pyramid Award winners for Hartford 21 project
Associations and certifications
- LEED Accreditation
What people say
24/7 emergency response
Energy savings expertise
Award-winning service
LEED-certified staff
Reliable maintenance programs
Services
Commercial HVAC Repair
Our licensed technicians provide 24/7 emergency HVAC repair and preventive maintenance for commercial buildings. Services include system diagnostics, component replacement, and performance optimization to minimize downtime. We service all major HVAC equipment brands in office, industrial, and healthcare facilities.
Building Automation Systems
We design and implement custom building automation systems that integrate HVAC, security, and lighting controls. Our DDC solutions improve energy efficiency and allow remote monitoring through MIS integration. LEED-certified professionals ensure compliance with sustainability standards.
Electrical Services
Full-service electrical contracting includes power distribution, emergency systems installation, and data network wiring. Our team handles UPS systems, generator testing, and computer room electrical infrastructure for mission-critical environments like data centers.
Infrared Thermography
Non-invasive electrical system inspections using infrared technology detect potential failures before they cause downtime. Annual scans meet ANSI/NFPA 70B standards and insurance requirements, with detailed reports documenting all findings and recommended repairs.
Facilities Management
Comprehensive on-site and mobile facilities management services include HVAC, plumbing, elevator maintenance, and general repairs. We provide dedicated engineers and 24/7 emergency response with a fleet of 300+ service vehicles strategically located across New England.
People
Russell Stevens
President & CEO
Russell Stevens leads NEMSI's strategic growth while maintaining focus on client satisfaction. With decades of mechanical services experience, he oversees operations for the region's largest mobile facilities service provider.
Questions
What geographic areas do you serve?
We serve Connecticut, Massachusetts, Rhode Island, New York, and New Hampshire with six regional offices and 300+ service vehicles.
Do you offer 24/7 emergency services?
Yes, our emergency response team is available 24 hours a day, 7 days a week with immediate dispatch capabilities.
What HVAC services do you provide?
We offer complete HVAC solutions including installation, repair, preventive maintenance, system optimization, and emergency repairs for commercial buildings.
Are your technicians certified?
All technicians are licensed and certified with ongoing training. We employ five LEED-accredited professionals for sustainability projects.
Can you handle large-scale facility projects?
Yes, we've completed national award-winning projects like Hartford 21's $1M/year energy savings system and luxury condominium retrofits.
Do you provide electrical services?
Yes, our electrical division handles power systems, emergency generators, data center infrastructure, and integrated building controls.
