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Ensuring Building Performance

Our team of project developers, engineers and expert field technicians specialize in making buildings perform optimally.

Across the US, we help building owners in a broad range of building performance sectors achieve better returns by reducing operating costs, streamlining capital expenditure and increasing occupant comfort and productivity. And our solutions help them meet their sustainability goals.


End to end proficiency and value


Turn-key planning and deployment for infrastructure renewals and energy upgrades

Commissioning & Balancing

Expert system testing and flow calibration


Creative solutions and expert advice for increasing asset value and maximizing and sustaining building performance


Store refrigerator

Rooftop and Make-Up Air Equipment renewal

e2s was secured to fully develop an HVAC RTU end-of-life replacement project. We were able to deploy our commissioning and test & balance engineers to review and document existing conditions of all equipment, their respective airflow and performance. Our project managers and in-house engineers developed the scope of work and were able to shift significant heating and cooling capacity away from main RTU systems to discrete kitchen make up air systems saving both first capital cost and on-going operational expense. The project was fully turn-key implemented by e2s including final commissioning and test & balance to ensure long term performance and asset optimization.

The vegetable aisle filled with various food items and fridges

Total Buildings Systems Commissioning

e2s was engaged to commission all mechanical, refrigeration, plumbing, BMS, and lighting systems for a new grocery store construction project. Our knowledge depth and team expertise successfully completed the project with swift contractor remedial actions on open items. We were also able to dive into the BMS control sequences and adjust programming to better match the client staff operational needs and use timing, creating 4% first year energy cost savings above the original design intent.

Two industrial service engineers conduct a safety check of a control panel and boiler room at a power station

LEED Cx and Testing and Balancing for Combined Heat and Power

e2s was a key contributor to a 56,000 sq ft flagship LEED Platinum new construction building. The project included natural gas fired dual effect absorption chillers producing all building cooling & heating water, dedicated on site power generation for resiliency and combined heat and power utilization, solar car park canopies and more. Our team was instrumental in advising feasibility during concept & design development, leveraging our previous CHP design experience with our in-house engineers. We provided forward confidence and oversight to all project stakeholders to facilitate successful construction and systems start up. Our team commissioned all systems and performed all air and hydronic test and balance to ensure correct and efficient system operations.


We preserve and improve your built environment portfolio

National Food, General, & Boutique Retail

Urban Mixed-use Medium and High-Rise developments

Multi-Building Campus Portfolio

Restaurants & Distribution Centers


Energy in the built environment

With over 400+ years of combined MEPR and BMS experience, our team has delivered over 20 LEED Gold/Platinum CxA projects. e2s is a NEBB nationally certified company, with certified employees as engineers and technicians.


Our Story

The e2s (energy efficiency services) company was formed in 2003 with the idea that commercial, industrial, and high density residential construction and facility operations can be more efficient when the engineered systems are designed in an integrated fashion, with appropriate technology specifically selected to match the owner’s capacity and requirements. This created a lifecycle consulting and commissioning value process that assists clients through concepts, document generation, testing and ongoing maintenance, to help every phase provide process and energy efficiency in building performance.


Work with us

We are always interested in meeting talented people with the technical expertise and commitment to quality that has become the hallmark of our team. If you would be interested in working for e2s, please get in touch.

number of kWh saved or removed from the electricity grid

electricity grid homes’ energy usage as an equivalent

Square feet of commercial properties commissioned

Square feet of commercial HVAC systems balanced


e2s is here to help. Please send us a contact request or call 603-738-7000 to learn more.