• slide
  • slide
  • slide
  • slide
  • slide

Single-Source Mechanical & Facilities Solutions For High Performance Environments

For over 50 years, clients across Connecticut and the Northeast have counted on NEMSI to deliver end-to-end facilities solutions for their various building environments. NEMSI builds and installs the critical systems to help ensure clients’ facilities are consistently comfortable, productive, and profitable.

ABC AWARD

ABC National Award 2025.jpg

We recently received the national Pyramid Award from the Associated Builders and Contractors for our work on the Hartford 21 project at the award ceremony in Las Vegas, NV.

Read the press release.

CASE STUDY VIDEO

Image from the Hartford 21 Energy project

Hartford 21 chose NEMSI to create a solution that will get them off of the city's central 'energy loop.' The solution included a new central plant, building controls, and cooling tower, and will generate $1M in annual energy savings.

Watch the video.

Meet the Team

Russell Stevens bio pictureRussell Stevens, President & CEO, is just one of the many people that allow our clients to better manage tomorrow's buildings today.

Meet the rest of our team.