"I am prompted to write to you to express my sincere appreciation for the exemplary way ESC performed our recent comprehensive energy project. From early-phase testing, energy consulting, value engineering and installation to completion, we knew we made the right choice in working with ESC.

It was refreshing to work with your team as their knowledge of the energy industry and attention to detail along every step of the way made this project go smoothly. We appreciate your prompt and continued communication throughout the project and will keep ESC in mind for future building needs."

Kenneth Madsen, Vice President Operations, Dimension-Polyant, Putnam CT


"We are extremely pleased with our partnership with ESC and the services that they offer. The technicians are knowledgeable and always a pleasure to work with. From conception to planning to execution – great communication along the way. I would highly recommend ESC to anyone looking for a partner to handle their Building Technology needs."

Steve P., IT Manager, EDAC Technologies, Cheshire, CT

“For over 40 years, Environmental Systems Corporation has been providing our facility with exceptional service and state of the art technical expertise. From the early days of maintaining our numerous HVAC systems to their current management of our building automation systems, their technicians are highly skilled in the latest technologies and have been our “go to” resource through numerous system upgrades.”

Kevin Keenan, General ManagerWestfarms Mall, CT

“It is always nice working with people that are willing to solve the problem to get the job done. I have had nothing but good comments from my employees on how your guys worked.”

Anthony Piazza, Superintendent, Simsbury Water Treatment Plant, CT

"ESC has been our go to shop for several projects.  Whether the project is small or large, immediate or future, we get the same attention.  You have a great team."

Matthew Glaser, Director of IT, Canterbury School, New Milford, CT

“You should be proud of the team you have. I am.”

Brian K. Naef, Project Manager, Ahearn Holtzman, CT

“ESC offered a turn-key project ready to go. Their staff is professional, courteous and prompt. They provided regular updates and I was able to discuss any issues that arose resulting in satisfactory resolution. Also notable, the installers were neat during project installation.”

Chris Bibeau, Plant Operations & Site Manager, Windham Hostpital, CT 

“We are pleased to announce our satisfaction with the service and professionalism offered to us by ESC.”

Paul Brax, Facilities Manager, Seconn Fabrication, CT

“The overall installation was smooth and seamless. The installers were neat, clean, organized and extremely helpful with anything we needed. ESC's Sales Manager and Project Manager kept me updated regularly as the project progressed.”

Joe Tourville, Facilities Manager, Connecticut Spring & Stamping, CT